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Encyclopedia > Interstate Highway System
Interstate Highways in the 48 contiguous states. Purple routes are currently built and open freeways, blue are currently open spur routes, and green indicates proposed routes, future roads, or those currently under construction.
A rural stretch of Interstate 5 in California, with two lanes in each direction separated by a large grassy median, and with cross-traffic limited to overpasses and underpasses.

The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly called the Interstate Highway System, is a network of highways (also called freeways or expressways) in the United States that is named for the president who was in office when the system was created. The Interstate Highway System is a separate system within the larger National Highway System. The entire system, as of 2004, had a total length of 46,837 miles (75,376 km) [1]. Image File history File links Map_of_current_Interstates. ... Image File history File links Map_of_current_Interstates. ... A typical stretch of Interstate 5 in the Central Valley of California. ... A typical stretch of Interstate 5 in the Central Valley of California. ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... On an expressway, motorway, or autobahn, the median (North American English) or central reservation (British English) is the strip of grass or the wall which separates opposing lanes of traffic. ... A highway is a major road within a city, or linking several cities together. ... Dwight David Eisenhower (October 14, 1890 – March 28, 1969) was an American General and politician, who served as the thirty-fourth President of the United States (1953–1961). ... The National Highway System includes many significant roads besides Interstate Highways Note: This article was adapted from public domain Federal Highway Administration web sites. ...


While Interstate Highways usually receive substantial federal funding and comply with federal standards, they are owned, built, and operated by the states in which they are located. The only exception is the federally-owned Woodrow Wilson Bridge on the Capital Beltway (I-95/I-495). Interstate 95 (District of Columbia) redirects here. ... The Capital Beltway (in green) The Capital Beltway (Interstate 495) is an expressway-class interstate highway which circles the Washington, DC area. ... Interstate 95 or (I-95) is an interstate highway that runs 1907 miles (3070 kilometers) north and south along the eastern United States coast. ... The Capital Beltway (in green) The Capital Beltway (Interstate 495) is a freeway-class interstate highway which circles the Washington, DC area. ...


The system serves nearly all major U.S. cities. Unlike counterparts in most other industrialized countries, many Interstates pass through downtown areas. This has helped to facilitate the emergence of automobile-oriented postwar suburban development patterns, a phenomenon also known as urban sprawl. The Central Business District of Sydney, Australia. ... Urban sprawl (also: suburban sprawl) is the spreading out of a city and its suburbs over rural land at the fringe of an urban area. ...


The system is prominent in American daily life. The distribution of virtually all goods and services involves Interstate Highways at some point. Residents of American cities commonly use urban Interstates to travel to their places of work. The vast majority of long-distance travel, whether for vacation or business, uses the national road network;[1] of these trips, about one-third (by the total number of miles driven in the country in 2003) utilize the Interstate system.[2]

Contents

History

Commemorative sign introduced in 1993. Though the system was established during Dwight D. Eisenhower's presidency, the five stars commemorate his rank as General of the Army during World War II.

The interstate system was authorized by the Federal-Aid Highway Act of 1956, popularly known as the National Interstate and Defense Highways Act of 1956. It had been lobbied for by major U.S. automobile manufacturers and championed by President Dwight D. Eisenhower- who was influenced by both his experiences as a young soldier crossing the country in 1919 following the route of the Lincoln Highway and his appreciation of the German autobahn network - as a necessary component of a national defense system. [3] It would be able to provide key ground transport of military supplies and troop deployments. Image File history File links Eisenhower_Interstate_System. ... Image File history File links Eisenhower_Interstate_System. ... General of the Army is historically the second most senior rank in the United States Army, equivalent to a Field Marshal in other militaries. ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000... The Federal-Aid Highway Act of 1956, popularly known as the National Interstate and Defense Highways Act, was enacted on June 29, 1956, when a hospitalized Dwight D. Eisenhower signed this bill into law. ... “Car” and “Cars” redirect here. ... Dwight David Eisenhower (October 14, 1890 – March 28, 1969) was an American General and politician, who served as the thirty-fourth President of the United States (1953–1961). ... Lincoln Highway bridge in Tama, Iowa The Lincoln Highway was the first transcontinental highway in the United States. ... It has been suggested that German Autobahns be merged into this article or section. ...


Initial federal planning for a nationwide highway system began in 1921 when the Bureau of Public Roads asked the Army to provide it with a list of roads it considered necessary for national defense, resulting in the Pershing Map. Later that decade, highways such as the New York parkway system had been built as part of local or state highway systems. As automotive traffic increased, planners saw a need for such an interconnected national system to supplement the existing, largely non-freeway, United States Numbered Highway system. By the late 1930s, planning had expanded to a system of new superhighways. The publication General location of national system of interstate highways maps out what became the interstate system, and is informally known as the Yellow Book. [2]. Year 1921 (MCMXXI) was a common year starting on Saturday (link will display the full calendar). ... The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. ... The United States Army is the largest and oldest branch of the armed forces of the United States. ... This article or section needs to be wikified. ... The New York State Parkway System opened its first section in 1908 and was a series of high speed (25 Mph) four-lane roads that were created to provide a scenic way in to, out of, and around New York City. ... Current U.S. Route shield Current U.S. Route shield in California The system of United States Numbered Highways, often called U.S. Routes or U.S. Highways is an integrated system of roads and highways in the United States numbered within a nationwide grid. ... The General location of national system of interstate highways, including all additional routes at urban areas designated in September, 1955 or the Yellow Book maps where the United States Interstate highway system was to go. ...


Although construction on the Interstate Highway system continues, the removal of the last traffic signal on Interstate 90 in Wallace, Idaho, on September 15, 1991 is often cited as the completion of the Interstate System. The initial cost estimate for the system was $25 billion over twelve years; it ended up costing $114 billion and taking 35 years to complete [3]. Traffic lights will sometimes differ where there are several lanes of traffic. ... Wikimedia Commons has media related to: Interstate 90 Interstate 90 (abbreviated I-90) is the longest interstate highway in the United States at nearly 3,100 miles (5,000 kilometers). ... Wallace is a city located in Shoshone County, Idaho. ... is the 258th day of the year (259th in leap years) in the Gregorian calendar. ... Year 1991 (MCMXCI) was a common year starting on Tuesday (link will display the 1991 Gregorian calendar). ...


However, due to the cancellation of the Somerset Freeway, Interstate 95 is discontinuous in New Jersey. When the Pennsylvania Turnpike/Interstate 95 Interchange Project concludes around 2009 , the last section of the basic original plan will be completed. The Somerset Freeway is the planning name for an unbuilt section of Interstate 95 in central New Jersey. ... Interstate 95 is a major Interstate Highway that traverses the full extent of the East Coast of the United States, from Maine to Florida. ... Official language(s) English de facto Capital Trenton Largest city Newark Area  Ranked 47th  - Total 8,729 sq mi (22,608 km²)  - Width 70 miles (110 km)  - Length 150 miles (240 km)  - % water 14. ... The Pennsylvania Turnpike/Interstate 95 Interchange Project is a project to build an interchange where Interstate 95 crosses the Pennsylvania Turnpike in Bristol Township, Pennsylvania. ...


Missouri and Kansas have laid claims that I-70 in those states was the first interstate (Missouri also says I-44 is one of the first). The first three contracts under the new program were signed in Missouri on August 2, 1956. Kansas claims that it was the first to start paving after the act and that the Kansas portion of I-70 was the first complete section. However, construction and planning on those roads had been underway before the highway act. The Pennsylvania Turnpike, which opened on October 1, 1940, claims to be the first limited-access, divided highway in the country. [4] I-70 looking westbound near Mile 326, Wabaunsee County, Kansas Interstate 70 is a long interstate highway in the United States. ... Interstate 44 is an interstate highway in the central United States. ... This Pennsylvania state route article needs to be cleaned up to conform to both a higher standard of article quality and accepted design standards outlined in the WikiProject Pennsylvania State Highways. ...


Standards

The American Association of State Highway and Transportation Officials (AASHTO) has defined a set of standards that all new Interstates must meet unless a waiver from the Federal Highway Administration (FHWA) is obtained. These standards have become more strict over the years. One almost absolute standard is the controlled access nature of the roads. With few exceptions, traffic lights (and cross traffic in general) are limited to toll booths and ramp meters (metered flow control for lane merging during rush hour). The American Association of State Highway and Transportation Officials (AASHTO) defines standards for Interstate Highways in their publication A Policy on Design Standards - Interstate System. ... AASHTO, the American Association of State Highway and Transportation Officials, is a standards setting body which publishes specifications, test protocols and guidelines which are used in highway design and construction throughout the United States. ... The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. ... A typical rural freeway (Interstate 5 in the Central Valley of California). ... For the most part, the Interstate Highway System in the United States is a connected system, with most roads completed. ... “Traffic Signal” redirects here. ... A toll road, turnpike or tollpike is a road on which a toll authority collects a fee for use. ... Metered Ramp A ramp meter or metering light is a device, usually a basic traffic light or a two-phase (red and green, no yellow) light together with a signal controller, that regulates the flow of traffic entering freeways according to current traffic conditions. ... This article needs additional references or sources for verification. ...


Speed limits

Further information: Speed limits in the United States

Interstate Highways often have the highest speed limits in a given area. Speed limits are determined by individual states. Rural limits generally range from 65 to 80 mph (104.6 to 128.7 km/h) typically with the lower limits in the more populated northeastern states and the higher speeds in the western states, with the exception of Oregon's state speed limit ceiling of 65 mph. Urban interstate speed limits are generally 50 to 65 mph (80.5 to 104.6 km/h) across the country. Speed limits in the United States are set by each state. ... A road speed limit is the maximum speed allowed by law for road vehicles. ...


Dual-purpose design

Further information: Contraflow lane reversal

In addition to being designed to support automobile and heavy truck traffic, interstate highways are also designed for use in military and civil defense operations within the United States, particularly troop movements. Contraflow lane reversal is a program designed for quick emergency evacuation of an area. ... The old United States civil defense logo. ...


One potential civil defense use of the Interstate Highway System is for the emergency evacuation of cities in the event of a potential nuclear war. The Interstate Highway System has been used to facilitate evacuations in the face of hurricanes and other natural disasters. The old United States civil defense logo. ... Emergency evacuation is the movement of persons from a dangerous place due to the threat or occurrence of a disastrous event. ...


An option for maximizing traffic throughput on a highway is to reverse the flow of traffic on one side of a divider so that all lanes become outbound lanes. This procedure, known as contraflow, was first employed in the 1998 evacuation of New Orleans, Louisiana in preparation for Hurricane Georges. Contraflow was also employed in the 2004 evacuation of the Tampa, Florida, area ahead of Hurricane Charley and again 2005 during the evacuations of New Orleans, Louisiana, and Houston, Texas, prior to hurricanes Katrina and Rita, respectively. Contraflow lane reversal is a program designed for quick emergency evacuation of an area. ... NOLA redirects here. ... Lowest pressure 937 mbar (hPa; 27. ... Tampas skyline For alternate meanings, see Tampa (disambiguation) Tampa is a city located in Hillsborough County on the west coast of Florida. ... Official language(s) English Capital Tallahassee Largest city Jacksonville Largest metro area Miami metropolitan area Area  Ranked 22nd  - Total 65,795[1] sq mi (170,304[1] km²)  - Width 361 miles (582 km)  - Length 447 miles (721 km)  - % water 17. ... Lowest pressure 941 mbar (hPa) Damage $16 billion (2004 USD) $16. ... NOLA redirects here. ... “Houston” redirects here. ... This article is about the Atlantic hurricane of 2005. ... Lowest pressure 895 mbar (hPa)[1] Damages $10 billion (2005 USD)[1] Fatalities 7 direct, 113 indirect Areas affected Bahamas, Florida, Cuba, Yucatán Peninsula, Louisiana, Texas, Mississippi, Arkansas Part of the 2005 Atlantic hurricane season Hurricane Rita is the fourth-most intense Atlantic hurricane ever recorded and the most...


Contrary to popular lore, Interstate highways are not designed to serve as airstrips. [4]


Terminology

While the name implies that Interstate highways cross state lines, many do not (For details, see List of intrastate Interstates). Rather, they are funded federally with money shared among the states. There are interstate highways in Hawaii, funded in the same way as in the other states, but entirely within the populous island of Oahu. They have the designation of H-X and connect military bases. Similarly, both Alaska and Puerto Rico have public roads that receive funding from the Interstate program, though these routes are not signed as Interstate Highways except "on paper". The following two-digit United States Interstate Highways do not cross state lines. ... Official language(s) English, Hawaiian Capital Honolulu Largest city Honolulu Area  Ranked 43rd  - Total 10,931 sq mi (29,311 km²)  - Width n/a miles (n/a km)  - Length 1,522 miles (2,450 km)  - % water 41. ... OÊ»ahu (usually Oahu outside Hawaiian and Hawaiian English), the Gathering Place, is the third largest of the Hawaiian Islands and most populous island in the State of HawaiÊ»i. ... Official language(s) English[1] Spoken language(s) English 85. ...


The numbering system can be summarized in these general rules. One- and two-digit highways are national routes:

  • Odd numbered routes run north-south, and higher numbers are farther east.
I-5 runs up and down the West Coast, with I-95 on the East Coast.
  • Even numbered routes run east-west, and higher numbers are farther north.
I-10 runs along the Southern states, and I-90 runs near the US-Canada border.

Three-digit highways, or Auxiliary Interstate Highways, run only within a single city. This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Interstate 10, or I-10, is the southernmost east-west, coast-to-coast interstate highway in the United States. ... This page is under construction. ...

  • An odd first digit signifies a spur route, which may begin at a large highway and terminate at a city center.
I-110 travels into downtown Los Angeles.
  • An even first digit signifies a loop route around a city or a bypass through a city.
I-215 travels the perimeter of Salt Lake City.
I-895 serves as a bypass of downtown Baltimore.
  • The last two digits signify the highway's origin.
I-215 eventually returns to I-15, a primary interstate highway.
I-185 in Georgia leaves I-85 to go into Columbus.
  • Sometimes, a three-digit highway branches off another three-digit highway; this is called a tertiary spur route of a two-digit highway. Tertiary spurs do not meet their parent highways, but are associated with them via the three-digit highways they do meet.
I-370 in Maryland branches off I-270, and is thus a tertiary spur of I-70.

The Harbor Freeway goes under many bridges as it passes through downtown Los Angeles The Harbor Freeway as it passes under the elevated portion of the HOV/bus transitway. ... Interstate 215 in Utah, also called the Belt Route, is a 29-mile bypass interstate in metropolitan Salt Lake City. ... The Harbor Tunnel Thruway, signed as Interstate 895, is a 17-mile long expressway that serves as a bypass of Baltimore, Maryland. ... Interstate 215 in California is a 54. ... This article is about Interstate 185 in Georgia. ... Interstate 370 is a 3. ...

Primary routes

See also: List of Interstate Highways

Interstate highways are typically known as Interstate XX or I-XX, where "XX" is the one- or two-digit route number; sometimes Interstate Highway XX (IH XX) or Interstate Route XX (IR XX) is used. In some areas, the more generic Route XX or Highway XX is used, or in the case of southern California, Nevada, and New York, The XX. Primary interstates are the major interstate highways of the United States and are assigned a one or two-digit route number. ...


The numbering scheme for the Interstate Highway System (as well as the U.S. Highway System) is coordinated by the American Association of State Highway and Transportation Officials (AASHTO), though their authority is occasionally trumped by a number written into Federal law. Within the continental United States, primary Interstates (also called main line Interstates or two-digit Interstates) are given one- or two-digit route numbers. Most Interstates have two digits; there are only three one-digit Interstates in the system: I-4, I-5 and I-8. Within this category, east-west highways are assigned even numbers, and north-south highways are assigned odd numbers. Odd route numbers increase from west to east, and even numbered routes increase from south to north, though there are exceptions to both principles in several locations. Numbers divisible by 5 are intended to be major among the primary routes, carrying traffic long distances. For example, I-5 runs from Canada to Mexico along the west coast (the only interstate to do so) while I-95 runs from Miami north to Canada along the east coast. In addition, I-10 runs from Santa Monica, California, to Jacksonville, Florida while I-90 runs from Seattle, to Boston. However, not all primary routes divisible by 5 traverse long distances. I-45 runs from Galveston, Texas, north to Dallas, a distance of only 284 miles (457 km). It is the only primary route divisible by 5 that does not cross state lines. See List of intrastate Interstate Highways for other primary routes that do not cross state lines. Current U.S. Highway shield Current U.S. Highway shield in California The United States Highway System is an integrated system of roads in the United States numbered within a nationwide grid. ... AASHTO, the American Association of State Highway and Transportation Officials, is a standards setting body which publishes specifications, test protocols and guidelines which are used in highway design and construction throughout the United States. ... Wikimedia Commons has media related to: Interstate 4 An old shield in Orlando, Florida Interstate 4 (abbreviated I-4) is a 132. ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... Interstate 8 (abbreviated I-8) is an Interstate highway in the southwestern United States. ... In mathematics, especially in elementary arithmetic, division is an arithmetic operation which is the inverse of multiplication. ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... Wikimedia Commons has media related to: Interstate 95 Interstate 95 (abbreviated I-95) is a well-known, important, and heavily traveled highway in the United States Interstate Highway System. ... “Miami” redirects here. ... Wikimedia Commons has media related to: Interstate 10 Interstate 10 (abbreviated I-10) is the southernmost east-west, coast-to-coast interstate highway in the United States. ... For other uses, see Santa Monica (disambiguation). ... “Jacksonville” redirects here. ... Wikimedia Commons has media related to: Interstate 90 Interstate 90 (abbreviated I-90) is the longest interstate highway in the United States at nearly 3,100 miles (5,000 kilometers). ... “Seattle” redirects here. ... Nickname: Location in Massachusetts, USA Coordinates: , Country United States State Massachusetts County Suffolk County Settled 1630 Incorporated (city) 1822 Government  - Mayor Thomas M. Menino (D) Area  - City  89. ... Interstate 45 (I-45) is an Interstate Highway located entirely within the U.S. state of Texas. ... Galveston redirects here. ... Nickname: Motto: Live Large. ... The following two-digit United States Interstate Highways do not cross state lines. ...


I-50 and I-60 do not exist (and there are no even-numbered Interstates from 46 to 62), mainly because they would most likely have passed through the same states that already have US 50 and US 60. AASHTO rules discourage Interstate and US Highways having the same number within the same state, although I-24 and US 24 exist at opposite ends of Illinois. Some planned Interstates do not follow this guideline — I-69 will intersect US 69 in Lufkin, Texas[5], I-74 will overlap US 74 in North Carolina, and I-41 will do the same with US 41 in Wisconsin. This U.S. Highway article needs to be cleaned up to conform to both a higher standard of article quality and accepted design standards outlined in the WikiProject U.S. Highways. ... U.S. Route 60 is an east-west United States highway, running 2,670 miles (4,300 km) from Virginia to Arizona. ... Wikimedia Commons has media related to: Interstate 24 Interstate 24 (abbreviated I-24) is an interstate highway in the eastern United States. ... U.S. Route 24, a dual north-south/east-west route, is one of the original United States highways of 1926. ... Official language(s) English[1] Capital Springfield Largest city Chicago Largest metro area Chicago Area  Ranked 25th  - Total 57,918 sq mi (149,998 km²)  - Width 210 miles (340 km)  - Length 390 miles (629 km)  - % water 4. ... Interstate 69 just outside Indianapolis near Pendleton, Indiana Interstate 69 (abbreviated I-69) is an interstate highway in the Southern and Midwestern United States. ... US 69 is a north-south United States highway. ... Lufkin is a city in Angelina County, Texas, United States. ... Interstate 74 (abbreviated I-74) is an interstate highway in the Midwestern and southeastern United States. ... U.S. Highway 74 is an east-west United States highway that runs for 524 miles (843 km) from Wrightsville Beach, North Carolina to Chattanooga, Tennessee. ... Official language(s) English Capital Raleigh Largest city Charlotte Area  Ranked 28th  - Total 53,865 sq mi (139,509 km²)  - Width 150 miles (240 km)  - Length 560[1] miles (901 km)  - % water 9. ... The Interstate Highway system is still being expanded. ... U.S. Route 41 is a north-south United States Highway that runs from the Upper Peninsula of Michigan to Miami, Florida. ... Official language(s) None Capital Madison Largest city Milwaukee Area  Ranked 23rd  - Total 65,498 sq mi (169,790 km²)  - Width 260 miles (420 km)  - Length 310 miles (500 km)  - % water 17  - Latitude 42° 30′ N to 47° 05′ N  - Longitude 86° 46′ W to 92° 53′ W Population  Ranked...


Several two-digit numbers are shared between two roads at opposite ends of the country, namely I-76, I-84, I-86 and I-88. Some of these were the result of a change in the numbering system in the 1970s; previously letter-suffixed numbers were used for long spurs off primary routes; for example, western I-84 was I-80N, as it went north from I-80. In the 1970s, AASHTO decided to eliminate these; some became additional two-digit routes, while others became three-digit routes (see below). Only two pairs of these exist; I-35 splits into I-35W and I-35E through both the Dallas-Fort Worth and the Minneapolis-St. Paul areas. Interstate 76 may mean: Two Interstate Highways, both formerly Interstate 80S Interstate 76 (east), a highway in Ohio, Pennsylvania, and New Jersey, USA Interstate 76 (west), a highway in northeastern Colorado and (minimally) western Nebraska, USA Interstate 76, a computer game Categories: | ... Interstate 84 may refer to: Interstate 84 (west), from Portland, Oregon to Echo, Utah Interstate 84 (east), from Scranton, Pennsylvania to Sturbridge, Massachusetts at the Massachusetts Turnpike (Interstate 90) Categories: | ... Interstate 86 may mean: Interstate 86 (west), a short route in Idaho Interstate 86 (east), a partially-completed route in New York and Pennsylvania Interstate 86 is a former designation for Interstate 84 east of East Hartford, Connecticut. ... Interstate 88 may refer to: Interstate 88 (west), a highway running west from Chicago, Illinois, USA Interstate 88 (east), a highway running west from Schenectady, New York, USA Categories: | ... Interstate 84 (abbreviated I-84) is an interstate highway that runs from an intersection with Interstate 5 at Portland, Oregon to an intersection with Interstate 80[1] at Echo, Utah—roughly the same route as the Oregon Trail. ... Interstate 80 (abbreviated I-80) is the second-longest Interstate Highway in the United States. ... Wikimedia Commons has media related to: Interstate 35 Interstate 35 (abbreviated I-35) is a north–south interstate highway in the central United States. ... Interstate 35W may mean: Interstate 35W (Texas), an 85 mile long branch route serving Fort Worth, Texas Interstate 35W (Minnesota), a 39 mile long branch route serving Minneapolis, Minnesota Formerly known as Interstate 35W: Interstate 135 in Kansas, until 1980 Interstate 35E Categories: | ... Interstate 35E may mean: Interstate 35E (Texas), a 97 mile long branch route serving Dallas, Texas Interstate 35E (Minnesota), a 41 mile long branch route serving St. ... The Dallas/Fort Worth Metroplex encompasses the metropolitan divisions of Dallas–Plano–Irving and Fort Worth–Arlington, within the U.S. state of Texas. ... A map of the Twin Cities metropolitan area. ...


For the sake of efficiency, some Interstates double up for short or sometimes long distances. This is usually referred to as a concurrency. One example is where I-75 and I-85 combine just below downtown Atlanta to form the Downtown Connector, a major thoroughfare through the city. Another example is the merging and diverging of Interstates 90 and 94, which double and then separate several times across the upper Midwest and Great Plains. I-90 and I-94 even join with I-39 from Madison to Portage, Wisconsin, creating the longest triple concurrence in the Interstate system. Interstates 90 and 80 are concurrent for almost 280 miles in Indiana and Ohio. A recent addition is the I-73/I-74 duplex, which runs along U.S. Route 220 from Asheboro to Rockingham, North Carolina. I-73 will also share routes with I-40 and I-85 on the Greensboro Urban Loop, a new bypass route around Greensboro, North Carolina. Strict adherence to the directional nature of the system results in some amusing oddities. For a nine-mile (14 km) stretch east of Wytheville, Virginia, the driver can be traveling on both I-81 North and I-77 South at the same time (and vice versa) (see also Wrong-way concurrency). A multiplex or concurrency on a road network occurs where a single physical road carries two or more different highway, motorway or other road numbers. ... This article does not cite any references or sources. ... Wikimedia Commons has media related to: Interstate 85 Interstate 85 (abbreviated I-85) is an interstate highway in the southeastern United States. ... Nickname: Location in Fulton and DeKalb counties in the state of Georgia Coordinates: , Country State Counties Fulton, DeKalb Government  - Mayor Shirley Franklin (D) Area  - City  132. ...   In Atlanta, Georgia, the Downtown Connector or 75/85 (pronounced seventy-five eighty-five) is the overlapped route of Interstate 75 and Interstate 85 through the core of the city. ... Wikimedia Commons has media related to: Interstate 90 Interstate 90 (abbreviated I-90) is the longest interstate highway in the United States at nearly 3,100 miles (5,000 kilometers). ... Interstate 94 (abbreviated I-94) is the northernmost east-west interstate highway, connecting the Great Lakes and Intermountain regions of the United States. ... Regional definitions vary from source to source. ... The Great Plains covers much of the central United States, portions of Canada and Mexico. ... INTERSTATE JUNCTIONS JUNCTION EXIT # Legend BROWSE STATE HWYS Prev Next Interstate 39 (abbreviated I-39) is an interstate highway in the midwestern United States. ... Nickname: Location of Madison in Dane County, Wisconsin Coordinates: , Municipality City Incorporated 1848 Government  - Mayor Dave Cieslewicz Area  - City 219. ... Portage, commonly referred to as Where the North Begins, is a city in Columbia County, Wisconsin, United States. ... Interstate 80 (abbreviated I-80) is the second-longest Interstate Highway in the United States. ... Official language(s) English Capital Indianapolis Largest city Indianapolis Area  Ranked 38th  - Total 36,418 sq mi (94,321 km²)  - Width 140 miles (225 km)  - Length 270 miles (435 km)  - % water 1. ... Official language(s) None Capital Columbus Largest city Columbus Largest metro area Cleveland Area  Ranked 34th  - Total 44,825 sq mi (116,096 km²)  - Width 220 miles (355 km)  - Length 220 miles (355 km)  - % water 8. ... Interstate 73 (abbreviated I-73) is a main route of the Interstate Highway System, currently located entirely within the U.S. state of North Carolina. ... Interstate 74 (abbreviated I-74) is an interstate highway in the Midwestern and southeastern United States. ... This U.S. Highway article needs to be cleaned up to conform to both a higher standard of article quality and accepted design standards outlined in the WikiProject U.S. Highways. ... Asheboro is a city in Randolph County, North Carolina, United States. ... Rockingham is a city in Richmond County, North Carolina, United States. ... Wikimedia Commons has media related to: Interstate 40 Interstate 40 (abbreviated I-40) is a major west-east interstate highway in the United States. ... The Greensboro Urban Loop (also known as Painter Boulevard) is a planned approximate 41-mile (66-km) beltway around Greensboro, North Carolina, United States. ... Greensboro Skyline Greensboro redirects here. ... Wytheville is a town located in Wythe County, Virginia. ... A wrong-way concurrency between Interstates 77 and 81, and U.S. Route 52 in southwestern Virginia A wrong-way concurrency or wrong-way multiplex is a road concurrency in which at least two numbered highway routes are signed in opposite, conflicting directions on the same stretch of physical roadway. ...


Three-digit Interstates

Interstate 355, a tolled Interstate, beneath the Illinois Prairie Path in the west suburbs of Chicago.
See also: List of auxiliary Interstate Highways

Auxiliary Interstate Highways are given three-digit route numbers, which consist of a single digit prefixed to the two-digit number of a primary Interstate highway, to designate spur or loop routes branching from either the primary route or one of its other auxiliary routes. A spur route is one that deviates from its parent and does not end at another Interstate; it is given an odd first digit. A loop route is one that returns to its parent; it is given an even first digit. The number given to the first digit of a route that branches from the parent to end at another Interstate depends on the state; some consider these routes spurs and assign odd first digits, while others consider them loop connectors giving them even first digits. Image File history File linksMetadata Size of this preview: 800 × 599 pixelsFull resolution (2288 × 1712 pixel, file size: 741 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Interstate Highway System Interstate 355 Metadata... Image File history File linksMetadata Size of this preview: 800 × 599 pixelsFull resolution (2288 × 1712 pixel, file size: 741 KB, MIME type: image/jpeg) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Interstate Highway System Interstate 355 Metadata... Interstate 355 (I-355), also known as the North-South Tollway, is a 20-mile (32 km) interstate highway and tollway located in the western suburbs of Chicago, Illinois, USA (part of a metropolitan area sometimes known as Chicagoland). ... The Illinois Prairie Path (often called the Prairie Path and abbreviated IPP) is a network of 61 miles (98 km) of bicycle trails, mostly in DuPage County, Illinois. ... Nickname: Motto: Urbs in Horto (Latin: City in a Garden), I Will Location in the Chicago metro area and Illinois Coordinates: , Country State Counties Cook, DuPage Settled 1770s Incorporated March 4, 1837 Government  - Mayor Richard M. Daley (D) Area  - City  234. ... This page is under construction. ...


When letter-suffixed two-digit Interstates (see above) were abundant, their auxiliary routes were given a number without a letter suffix (with the exception of I-180N in Boise, Idaho, which is now Interstate 184). Nickname: Motto: Energy Peril Success Location of Boise in the State of Idaho Coordinates: , Country United States State Idaho County Ada Founded 1863 Incorporated 1864 Government  - Mayor David H. Bieter Area  - City  64 sq mi (165. ... Interstate 184 (abbreviated I-184) is a short interstate spur route of Interstate 84 located in Idaho. ...


Due to the large number of these routes, auxiliary route (aka "spur route") numbers may be repeated in different states along the mainline; but no two three-digit Interstates in the same state can share a number. For instance, I-90 in New York alone has a full set of three-digit Interstates - I-190, I-290, I-390, I-490, I-590, I-690, I-790, I-890 and I-990. In road transportation, an auxiliary route is either a spur or a loop of a parent route. ... Interstate 90 is the longest interstate highway in the United States. ... “NY” redirects here. ... New Yorks I-190 runs for 28 miles from I-90 near Buffalo, New York to Lewiston, New York via Niagara Falls. ... New Yorks Interstate 290 runs for 10 miles near Buffalo, New York from I-90 to I-190. ... Interstate 390 an Interstate Highway that is located entirely in the state of New York. ... The 37. ... Interstate 590 is a tertiary spur interstate route of Interstate 90 in the state of New York. ... The never fully-utilized intersection of Interstate 481 and Interstate 690 in East Syracuse. ... Interstate 790 is a tertiary spur interstate route of Interstate 90. ... Interstate 890 is a 9. ... Interstate 990 is a short Interstate Highway, located entirely in the state of New York. ...


Closed loops usually retain a single designation for the entire route, even when they enter other states. For example, Cincinnati, like many other cities, features a large loop around the city that intersects with the primary routes I-71, I-74, and I-75 and travels through Ohio, Kentucky, and Indiana. The entire 84 mile (135 km) loop is labeled I-275. (It is also the only three-digit interstate to ever go through three states.) Nickname: Motto: Juncta Juvant (Strength in Unity) Location in Hamilton County, Ohio, USA Coordinates: , Country United States State Ohio County Hamilton Founded 1788 Incorporated 1802 (village) - 1819 (city) Government  - Type Mayor-council government  - Mayor Mark L. Mallory (D) Area  - City 79. ... Interstate 71 is an interstate highway in the midwestern United States. ... Interstate 74 is an interstate highway in the midwestern United States. ... Interstate 75 is an interstate highway in the midwest and southeastern United States. ... Interstate 275 (abbreviated I-275) is an 83. ...


The loop highway around Washington, D.C., known as the Capital Beltway, carries both I-95 and I-495. Originally, the loop carried only I-495, in anticipation of I-95 being routed through Washington, but in 1977, I-95 was rerouted on the eastern half of the loop due to the cancellation of the segment that would have connected downtown Washington to College Park, Maryland, while I-495 remained on the western half. I-495 was added back to the eastern half of the loop in 1989, creating a rare concurrency of primary and auxiliary routes. For other uses, see Washington, D.C. (disambiguation). ... The Capital Beltway (in green) The Capital Beltway (Interstate 495) is an expressway-class interstate highway which circles the Washington, DC area. ... Wikimedia Commons has media related to: Interstate 95 Interstate 95 (abbreviated I-95) is a well-known, important, and heavily traveled highway in the United States Interstate Highway System. ... The Capital Beltway (in green) Interstate 495 (abbreviated I-495) is a freeway-class interstate highway which circles Washington, D.C. and its inner suburbs in Maryland and Virginia. ... College Park is a city in Prince Georges County, Maryland, USA, United States. ...


Unlike primary Interstates, three-digit Interstates are signed either east-west or north-south depending on the general orientation of the route, without any regard to the route number. For some looped Interstate routes, Inner and Outer banners are used as a directional labeling system as opposed to compass directions. On beltways in right-side driving nations, traffic travels in a clockwise direction in the inner lane (blue) and counterclockwise in the outer lane (red). ...


Of course, there are exceptions to these guidelines:

  • A contiguous loop surrounds the entire Minneapolis-St. Paul Metro area. I-94 intersects the loop in two spots and runs directly through it separating it into southern and northern halves; the southern half of it is labeled I-494 while the northern half of it is labeled I-694. The northern half rejoins I-94 approximately five miles before the southern half does; this stretch is signed I-94/I-694.
  • I-270 and I-255 form a beltway around the greater St. Louis area. On its southwest corner, I-270 becomes I-255 as it crosses I-55 counter-clockwise only to terminate back at I-270 in the northeast. In the early 1980s, local residents stopped a plan to designate the entire closed loop as I-270 and renumber the stub of I-270 from Glen Carbon to Edwardsville to I-870.
  • New York City has numerous spur routes off from I-78 and I-95, but none of I-78's spur routes actually intersect with I-78.
  • An auxiliary route numbered I-238 connects San Leandro and Castro Valley, California, yet there is no I-38. Instead, I-238 carries the designation of the portion of State Route 238 that the Interstate designation replaced. I-238's parent route is I-80, and at the time of I-238's designation, all child routes of I-80 (I-180 through I-980) were already designated in California.

A map of the Twin Cities metropolitan area. ... Interstate 94 is a long interstate highway connecting the Great Lakes and Intermountain region of the United States. ... Interstate 94 is a long interstate highway connecting the Great Lakes and Intermountain region of the United States. ... Interstate 94 is a long interstate highway connecting the Great Lakes and Intermountain region of the United States. ... Interstate 94 is a long interstate highway connecting the Great Lakes and Intermountain region of the United States. ... This lead needs copy editing for grammar, style, cohesion, tone and/or spelling. ... Interstate 255 (abbreviated I-255) is a bypass route of Interstate 55 near St. ... Nickname: Location in the state of Missouri Coordinates: , Country State County Independent City Government  - Mayor Francis G. Slay (D) Area  - City  66. ... Interstate 55 is an interstate highway in the central United States. ... New York, New York and NYC redirect here. ... Interstate 78 is an interstate highway in the eastern United States. ... Interstate 95, the major Interstate Highway along the East Coast of the United States, runs 23. ... Interstate 238 (abbreviated I-238) is a short (2. ... San Leandro is a city in Alameda County, California, United States. ... Castro Valley is a census-designated place (CDP) in Alameda County, California, United States. ... State Route 238 is a north-south highway in the southeastern part of the San Francisco Bay Area, USA. A divided multilane surface highway, it connects Interstate 580 in Castro Valley, California and Interstate 680 in Fremont, California. ... Interstate 80 as seen from an overpass in Davis, California Interstate 80 is the second-longest interstate highway in the United States. ...

Exceptions

A major exception to the overall numbering system is Interstate 99 in Pennsylvania, which was written into law as I-99 by Pennsylvania Congressman Bud Shuster; I-99 (which is also U.S. Route 220) is west of several Interstates that are numerically less than 99, but 99 was the nearest odd 2-digit number available for the interstate. Interstate 99 (abbreviated I-99) is a main route of the Interstate Highway System in central Pennsylvania. ... Capital Harrisburg Largest city Philadelphia Area  Ranked 33rd  - Total 46,055 sq mi (119,283 km²)  - Width 280 miles (455 km)  - Length 160 miles (255 km)  - % water 2. ... Elmer Greinert Bud Shuster (born January 23, 1932) is an American politician who represented Pennsylvania in the United States House of Representatives as a Republican from 1972 to 2001. ... This U.S. Highway article needs to be cleaned up to conform to both a higher standard of article quality and accepted design standards outlined in the WikiProject U.S. Highways. ...


A less-notable exception is I-82, which lies fully north of I-84; this is a relic from I-84 previously having the designation of I-80N. Interstate 82 (abbreviated I-82) is an interstate highway in the northwestern United States. ... Interstate 84 (abbreviated I-84) is an interstate highway that runs from an intersection with Interstate 5 at Portland, Oregon to an intersection with Interstate 80[1] at Echo, Utah—roughly the same route as the Oregon Trail. ...


Some Proposed Interstate Highways have been given similarly non-conforming designations by their legislative proponents. For example, backers of the proposed Third Infantry Division Highway, a route in Georgia and Tennessee, have suggested it be named Interstate 3, in honor of the U.S. 3rd Infantry Division. The Interstate Highway system is still being expanded. ... Official language(s) English Capital Nashville Largest city Memphis Largest metro area Nashville Area  Ranked 36th  - Total 42,169 sq mi (109,247 km²)  - Width 120 miles (195 km)  - Length 440 miles (710 km)  - % water 2. ... Shoulder sleeve patch of the United States Army 3d Infantry Division (Mechanized). ...


Other notable examples

The following two-digit Interstates change signed direction from their normal (even=east-west, odd=north-south) direction:

The I-69 segment is an extension of its original route; I-76 only runs for two miles (3 km) in Nebraska before ending at I-80. Interstate 69 is an interstate highway in the midwestern United States. ... Location in Ingham County, Michigan1 Coordinates: Country United States State Michigan County Ingham, Eaton Settled 1835 Incorporation 1859 Government  - Type Strong Mayor-Council  - Mayor Virg Bernero (D) Area  - City  35. ... Interstate 76 runs from Interstate 70 in Denver, Colorado to an intersection with Interstate 80 near Big Springs, Nebraska. ... Official language(s) English Capital Lincoln Largest city Omaha Largest metro area Omaha Area  Ranked 16th  - Total 77,421 sq mi (200,520 km²)  - Width 210 miles (340 km)  - Length 430 miles (690 km)  - % water 0. ... Interstate 80 as seen from an overpass in Davis, California Interstate 80 is the second-longest interstate highway in the United States. ...


Two-digit Interstates in Hawaii, as well as the "paper" Interstates of Alaska and Puerto Rico, are numbered sequentially in order of funding, without regard to the rules on odd and even numbers. Official language(s) English, Hawaiian Capital Honolulu Largest city Honolulu Area  Ranked 43rd  - Total 10,931 sq mi (29,311 km²)  - Width n/a miles (n/a km)  - Length 1,522 miles (2,450 km)  - % water 41. ... Official language(s) English[1] Spoken language(s) English 85. ...


Business Loop and Business Spur Interstates are not subject to any of the Interstate Highway standards. Their designation is simple - a Business Loop heads into a downtown area from its parent and returns to its parent; a Business Spur ends downtown, occasionally continuing from the end of the main Interstate. Business routes can split from either two- or three-digit Interstates, and can be repeated within a state. In a few cases, where an Interstate has been realigned, the old road has been designated a Business Loop because it is not up to standards. Business Loop I-95 shield A Business Loop Interstate is one of two types of Business Interstates (Business Spur being the other). ... Business Spur I-95 shield A Business Spur Interstate is one of two types of Business Interstates (Business Loop being the other). ... The American Association of State Highway and Transportation Officials (AASHTO) defines standards for Interstate Highways in their publication A Policy on Design Standards - Interstate System. ...


Financing

I-15 near Downtown Salt Lake City. Five lanes in each direction with three-lane feeders on each side

About 56%[6] of the construction and maintenance costs are funded through user fees, primarily gasoline taxes, collected by states and the federal government, and tolls collected on toll roads and bridges. The rest of the costs are borne by the federal budget. In the eastern United States, large sections of some Interstate Highways planned or built prior to 1956 are operated as toll roads. The taxes dedicated to the construction and maintenance of highways are sometimes criticized as a direct subsidy from the government to promote and maintain auto-oriented development. Image File history File links Size of this preview: 600 × 450 pixelsFull resolution (600 × 450 pixel, file size: 36 KB, MIME type: image/jpeg) I, the creator of this work, hereby release it into the public domain. ... Image File history File links Size of this preview: 600 × 450 pixelsFull resolution (600 × 450 pixel, file size: 36 KB, MIME type: image/jpeg) I, the creator of this work, hereby release it into the public domain. ... Interstate 15, or I-15, is a north-south interstate highway in the western United States, traveling through the states of Montana, Idaho, Utah, Arizona, Nevada, and California. ... The Salt Lake Temple of The Church of Jesus Christ of Latter-day Saints is Salt Lake Citys top tourist draw. ... People pay user fees for the use of many public services and facilities. ... A gasoline tax (also known as a gas tax, petrol tax, fuel tax or fuel duty) is a sales tax imposed on the sale of gasoline. ... This article or section does not cite any references or sources. ...


As American suburbs push ever outward, the costs incurred in maintaining freeway infrastructure have grown, leaving little in the way of funds for new interstate construction [7]. This has led to the proliferation of toll roads (turnpikes) as the new method of building limited-access highways in suburban areas. Also, some interstates are being privately maintained (e.g., VMS maintains I-35 in Texas) in order to cut rising costs of maintenance and allow state departments of transportation to focus on serving the fastest growing regions in their respective states. The future of the interstate system as we know it is in question. It is possible that parts of the system will have to be tolled in the future to meet maintenance and expansion demands, as has been done with adding toll HOV/HOT lanes in certain cities like San Diego, Salt Lake City, Minneapolis, Houston, Dallas, Atlanta and Washington, D.C. This page is a candidate to be moved to Wiktionary. ... “San Diego” redirects here. ... Salt Lake City is the capital and the most populous city of the U.S. state of Utah. ... “Minneapolis” redirects here. ... “Houston” redirects here. ... Nickname: Motto: Live Large. ... Nickname: Location in Fulton and DeKalb counties in the state of Georgia Coordinates: , Country State Counties Fulton, DeKalb Government  - Mayor Shirley Franklin (D) Area  - City  132. ... For other uses, see Washington, D.C. (disambiguation). ...


The federal role in financing

The dominant role of the federal government in road finance has enabled it to achieve legislative goals that fall outside its power to regulate interstate commerce as enumerated in the federal Constitution. By threatening to withhold highway funds, the federal government has been able to stimulate state legislatures to pass a variety of laws. Although some object on the ground that this infringes on states' rights, the Supreme Court has upheld the practice as a permissible use of the Constitution's Commerce Clause. A legislature is a type of representative deliberative assembly with the power to adopt laws. ... In American politics and constitutional law, states rights are guaranteed by the Tenth Amendment to the United States Constitution, (i. ... Federal courts Supreme Court Circuit Courts of Appeal District Courts Elections Presidential elections Midterm elections Political Parties Democratic Republican Third parties State & Local government Governors Legislatures (List) State Courts Local Government Other countries  Atlas  Politics Portal      The Supreme Court of the United States (sometimes colloquially referred to by the acronym... Article I, Section 8, Clause 3 of the United States Constitution, known as the Commerce Clause, reads as follows:The Congress shall have Power . ...


The first major example was the introduction of the 55 mph (90 km/h) national speed limit in 1974. While its purpose was to save fuel in the wake of the 1973 energy crisis, federal speed controls stayed in effect for 21 years. The initial acceptance of the national speed limit emboldened various presidents and Congresses to enact additional pieces of legislation, some of which have little to do with highways or transportation. Examples include: 55 mph speed limit being erected in response to the National Maximum Speed Law. ... (Redirected from 1973 energy crisis) United States, drivers of vehicles with odd numbered license plates were allowed to purchase gasoline only on odd-numbered days of the month, while drivers with even-numbers were limited to even-numbered days. ...

States must also meet minimum enforcement standards for all federally-mandated legislation (for example, minimum penalties for violation of these laws and a minimum number of per capita underage drinking convictions or a compelling explanation regarding why this number is not met). This has proved to be controversial. Supporters hold that it is a way to provide an impetus to states to pass uniform legislation. Critics maintain that using highway dollars in this fashion upsets the balance between federal and states rights in favor of the federal government, and effectively holds funds as ransom in order to coerce state governments into passing laws that would not have otherwise been introduced. Some have even argued that the current arrangement is unconstitutional. Law enforcement agencies in some states argue that efforts to meet quotas for underage drinking convictions have distracted them from other matters and strained relations with those under 21. Any state that was to lose federal highway funding would quickly face deteriorating infrastructure, fiscal impoverishment, or both. The legal drinking age is a limit assigned by governments to restrict the access of children and youth to alcoholic beverages. ... This article does not cite any references or sources. ... It has been suggested that Sex offender registry be merged into this article or section. ... ... A permanent, separated high-occupancy vehicle lane on I-91 in Connecticut A high occupancy vehicle (or HOV) is any vehicle with a driver and one or more (or sometimes two or more, or three or more) passengers. ... United States one-dollar bill Canadian one-dollar coin (Loonie) One New Taiwan dollar Australian one-dollar coin 500 old Zimbabwean dollars The dollar (often represented by the dollar sign: $) is the name of the official currency in several countries, dependencies and other regions. ... It has been suggested that this article or section be merged into constitutionality. ...


Of course, a state that lost federal highway funding could theoretically threaten to stop maintaining its highways, if that were politically palatable to its residents.


Non-chargeable Interstate routes

In addition to Interstate highways financed with federal funds (Chargeable Interstate routes), federal laws allow other highways to be signed as Interstates, if they meet the Interstate Highway standards and are logical additions or connections to the System.


Called Non-Chargeable Interstate routes, these additions fall under two categories:

  1. Routes that already meet Interstate standards. These may immediately be signed as Interstates once their proposed number is approved, or may be retained with a non-Interstate designation.
  2. Routes not yet upgraded to Interstate standards. These cannot be signed as Interstates until they have been fully upgraded.

Shield evolutions

Map of states that use shields with the state name within.
Blue: All state shields.
Turquoise: Mix of both state and neutral shields.
White: All neutral shields.

From time to time shield changes. Ever since the early 1960s, most of the interstate shields have been getting bigger, the colorings began to look more transparent. In 1958 the early interstate shields were created, the body color is actually look navy-color back then and only 17 inches. The interstate galleries made few revision over 1961, 1972, 1988, and 2000. By the year 1980s, the states such as many shields in the Northeastern states began to disappear and switching to general shields, and the body color start to look more brigh blue in coloring. By 2000, the shield size nearly doubled, the interstate shields reach 36 inches in diameter, and ever since 1999, the general shields in North Carolina, Georgia, Louisiana started appearing. Image File history File links Map_of_State_Interstate_shields. ... Image File history File links Map_of_State_Interstate_shields. ... Official language(s) English Capital Raleigh Largest city Charlotte Area  Ranked 28th  - Total 53,865 sq mi (139,509 km²)  - Width 150 miles (240 km)  - Length 560[1] miles (901 km)  - % water 9. ... Official language(s) de jure: none de facto: English & French Capital Baton Rouge Largest city New Orleans [1] Area  Ranked 31st  - Total 51,885 sq mi (134,382 km²)  - Width 130 miles (210 km)  - Length 379 miles (610 km)  - % water 16  - Latitude 29°N to 33°N  - Longitude 89°W...


All General Shields

All the states with sparse state shields or no state shields are white states. They, such as Washington, Oregon, Idaho, Ohio, even Nevada, Utah, Illinois you can barely find any state shields. You can only find them at few rural municipalities such as you can only find the Interstate 4 state shield remaining in Orlando. In Oregon ever since the 1970s they start to switch into neutral shields with no state name. You might still see the old Interstate 5 shield with state name, but that is created in the 1960s, now you can only find a few maybe only no more than 3 total sets of I-5 state shields, rest even made in the 1980s are neutral shields. States like New York, Delaware, New Hampshire, Pennsylvania, have almost no state name on its shields remaining. This article deals with the U.S. state. ... Official language(s) (none)[1] Capital Salem Largest city Portland Area  Ranked 9th  - Total 98,466 sq mi (255,026 km²)  - Width 260 miles (420 km)  - Length 360 miles (580 km)  - % water 2. ... Official language(s) English [1] Capital Boise Largest city Boise Area  Ranked 14th  - Total 83,642 sq mi (216,632 km²)  - Width 305 miles (491 km)  - Length 479 miles (771 km)  - % water 0. ... Official language(s) None Capital Columbus Largest city Columbus Largest metro area Cleveland Area  Ranked 34th  - Total 44,825 sq mi (116,096 km²)  - Width 220 miles (355 km)  - Length 220 miles (355 km)  - % water 8. ... Official language(s) English Capital Carson City Largest city Las Vegas Area  Ranked 7th  - Total 110,567 sq mi (286,367 km²)  - Width 322 miles (519 km)  - Length 490 miles (788 km)  - % water 0. ... This article is about the U.S. state. ... Official language(s) English[1] Capital Springfield Largest city Chicago Largest metro area Chicago Area  Ranked 25th  - Total 57,918 sq mi (149,998 km²)  - Width 210 miles (340 km)  - Length 390 miles (629 km)  - % water 4. ... Wikimedia Commons has media related to: Interstate 4 An old shield in Orlando, Florida Interstate 4 (abbreviated I-4) is a 132. ... Nickname: Location in Orange County and the state of Florida. ... Official language(s) (none)[1] Capital Salem Largest city Portland Area  Ranked 9th  - Total 98,466 sq mi (255,026 km²)  - Width 260 miles (420 km)  - Length 360 miles (580 km)  - % water 2. ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... “NY” redirects here. ... Capital Dover Largest city Wilmington Area  Ranked 49th  - Total 2,491 sq mi (6,452 km²)  - Width 30 miles (48 km)  - Length 100 miles (161 km)  - % water 21. ... Official language(s) English Capital Concord Largest city Manchester Area  Ranked 46th  - Total 9,359 sq mi (24,239 km²)  - Width 68 miles (110 km)  - Length 190 miles (305 km)  - % water 3. ... Capital Harrisburg Largest city Philadelphia Area  Ranked 33rd  - Total 46,055 sq mi (119,283 km²)  - Width 280 miles (455 km)  - Length 160 miles (255 km)  - % water 2. ...


Some state shields, some neutral shields

All the states with mixture of neutral and state shields are turquoise states. Right now, you can still find some state shields and the recent ones are replaced to general shields. Numerous southeastern states began neutralling the shields ever since the mid to late 1990, and some began in 2000. Louisiana began neutralling the shields ever since the 1990s. In Alabama the recent made shields are neutral shields. You may still find numerous of state shields in some cities but some highway recently the new interstate shields are recently replaced with no state names. In Texas they start to neutralling the shields in the early 2000s. In northeastern Texas most of the shields are neutral. In southeastern Texas, you might still see many state shields. You might now still see Interstate 635 state shields, but most 3-digit interstate appears with interstate shields with no state names. Official language(s) de jure: none de facto: English & French Capital Baton Rouge Largest city New Orleans [1] Area  Ranked 31st  - Total 51,885 sq mi (134,382 km²)  - Width 130 miles (210 km)  - Length 379 miles (610 km)  - % water 16  - Latitude 29°N to 33°N  - Longitude 89°W... This article is about the U.S. State. ... Official language(s) No official language See languages of Texas Capital Austin Largest city Houston Largest metro area Dallas–Fort Worth Metroplex Area  Ranked 2nd  - Total 261,797 sq mi (678,051 km²)  - Width 773 miles (1,244 km)  - Length 790 miles (1,270 km)  - % water 2. ... Interstate 635 signage on the Dallas North Tollway frontage road. ...


All or most state shields

All the states with most state shields are blue states. States such as California, Arizona, New Mexico, even recent shields bright and blue bodies, still uses state names. In California with many recently placed interstate shields still uses state names. Highways in Northern California like Interstate 580, Interstate 880, all the 3-digit interstate in San Francisco, about all the recent made shields still have California state shields print on it. Shields such as Interstate 10 and Interstate 605, state shield almost cover the entire galleries, you almost see all state shields with no neutral shields began yet. Because California is known as Golden State, Caltrans may never switch those to neutral shields. Even Kansas, Oklahoma, Missouri, and even Iowa and Maryland state shields still cover most of the interstate galleries. The state shields are still actively running in Kansas and Missouri, and even Oklahoma. You still find almost all the interstates in Metropolitan Oklahoma City, Kansas City and even Metropolitan St. Louis still use interstate shields with state name printed, even those new ones. In Iowa and Maryland the state shields are still many. Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Official language(s) English Spoken language(s) English 74. ... Capital Santa Fe Largest city Albuquerque Area  Ranked 5th  - Total 121,665 sq mi (315,194 km²)  - Width 342 miles (550 km)  - Length 370 miles (595 km)  - % water 0. ... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Interstate 580 (abbreviated I-580) is an interstate highway in Northern California. ... Interstate 880 is a regional bypass interstate highway in the Bay Area metropolitan area of Northern California. ... This page is a candidate for speedy deletion. ... Interstate 10, the major east-west Interstate Highway in the Southern United States, runs east from Santa Monica, California, on the Pacific Ocean, through Los Angeles and San Bernardino to the border with Arizona. ... Interstate 605/San Gabriel River Freeway (highlighted in red) Interstate 605 (abbreviated I-605), locally called the San Gabriel River Freeway or The 605, is a major north-south freeway of about 27 miles (43 km) in length located entirely within Southern California, USA. Unlike most other freeways in Southern... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Caltrans logo The soaring ramps in the stack interchanges favored by Caltrans often provide stunning views. ... Official language(s) English[2] Capital Topeka Largest city Wichita Area  Ranked 15th  - Total 82,277 sq mi (213,096 km²)  - Width 211 miles (340 km)  - Length 417 miles (645 km)  - % water 0. ... Official language(s) None Capital Oklahoma City Largest city Oklahoma City Area  Ranked 20th  - Total 69,898 sq mi (181,196 km²)  - Width 230 miles (370 km)  - Length 298 miles (480 km)  - % water 1. ... Official language(s) English Capital Jefferson City Largest city Kansas City Largest metro area St Louis[1] Area  Ranked 21st  - Total 69,709 sq mi (180,693 km²)  - Width 240 miles (385 km)  - Length 300 miles (480 km)  - % water 1. ... Official language(s) English Capital Des Moines Largest city Des Moines Area  Ranked 26th  - Total 56,272 sq mi (145,743 km²)  - Width 310 miles (500 km)  - Length 199 miles (320 km)  - % water 0. ... Official language(s) None (English, de facto) Capital Annapolis Largest city Baltimore Area  Ranked 42nd  - Total 12,407 sq mi (32,133 km²)  - Width 90 miles (145 km)  - Length 249 miles (400 km)  - % water 21  - Latitude 37° 53′ N to 39° 43′ N  - Longitude 75° 03′ W to 79° 29... Official language(s) English[2] Capital Topeka Largest city Wichita Area  Ranked 15th  - Total 82,277 sq mi (213,096 km²)  - Width 211 miles (340 km)  - Length 417 miles (645 km)  - % water 0. ... Official language(s) English Capital Jefferson City Largest city Kansas City Largest metro area St Louis[1] Area  Ranked 21st  - Total 69,709 sq mi (180,693 km²)  - Width 240 miles (385 km)  - Length 300 miles (480 km)  - % water 1. ... Official language(s) None Capital Oklahoma City Largest city Oklahoma City Area  Ranked 20th  - Total 69,898 sq mi (181,196 km²)  - Width 230 miles (370 km)  - Length 298 miles (480 km)  - % water 1. ... This article needs additional references or sources for verification. ... This article does not cite any references or sources. ... Nickname: Location in the state of Missouri Coordinates: , Country State County Independent City Government  - Mayor Francis G. Slay (D) Area  - City  66. ... Official language(s) English Capital Des Moines Largest city Des Moines Area  Ranked 26th  - Total 56,272 sq mi (145,743 km²)  - Width 310 miles (500 km)  - Length 199 miles (320 km)  - % water 0. ... Official language(s) None (English, de facto) Capital Annapolis Largest city Baltimore Area  Ranked 42nd  - Total 12,407 sq mi (32,133 km²)  - Width 90 miles (145 km)  - Length 249 miles (400 km)  - % water 21  - Latitude 37° 53′ N to 39° 43′ N  - Longitude 75° 03′ W to 79° 29...


Signage

A sample Interstate 95 shield.

Interstate Highways are signed by a number on a trademarked red, white and blue sign as shown to the right. In the original design, the state was listed above the highway number, but in many states, this area is now left blank. The sign itself usually measures 36 inches (91 cm) high , and is 36 inches wide for two-digit interstates or 45 inches (114 cm) for three-digit interstates. Image File history File links I-95. ... Image File history File links I-95. ... Wikimedia Commons has media related to: Interstate 95 Interstate 95 (abbreviated I-95) is a well-known, important, and heavily traveled highway in the United States Interstate Highway System. ... A highway shield being erected in California A highway shield is a sign used for denoting the route number of a highway. ...


Business Loop and Business Spur Interstates use a special shield where the red and blue are replaced with green; the word BUSINESS appears instead of INTERSTATE, and the word SPUR or LOOP usually appears above the number. Business Loop I-95 shield A Business Loop Interstate is one of two types of Business Interstates (Business Spur being the other). ... Business Spur I-95 shield A Business Spur Interstate is one of two types of Business Interstates (Business Loop being the other). ...


The majority of Interstates have exit numbers. All traffic signs and lane markings on the Interstates are supposed to be designed in compliance with the Manual on Uniform Traffic Control Devices (MUTCD). However, there are many local and regional variations in signage. Exit numbers on Interstate 4 in Volusia County, Florida. ... Unused traffic signs in Austria Most countries post signage, known as traffic signs or road signs, at the side of roads to impart information to road users. ... The word lane has two meanings: a portion of a paved roadway which is intended for a single line of vehicles and is marked by white or yellow lines. ... The Manual on Uniform Traffic Control Devices (MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road markings (see lane), and signals are designed, installed, and used. ...


For many years, California was the only state that did not use an exit numbering system. It was granted an exemption in the 1950s due to having an already largely completed and signed highway system; at the time, placing exit number signage on the signs across the state was deemed too expensive. Since 2002, however, California has begun to incorporate exit numbers on all of its freeways - interstate, U.S., and state routes alike. To mitigate costs, a common occurrence is for Caltrans to install exit number signage only when a freeway or interchange is built, reconstructed, retrofitted, or repaired. The majority of the exits along Interstates 5, 10, and 80 now have exit number signage, particularly in rural areas. Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Caltrans logo The soaring ramps in the stack interchanges favored by Caltrans often provide stunning views. ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... Wikimedia Commons has media related to: Interstate 10 Interstate 10 (abbreviated I-10) is the southernmost east-west, coast-to-coast interstate highway in the United States. ... Interstate 80 (abbreviated I-80) is the second-longest Interstate Highway in the United States. ...


In most states, the exit numbers correspond to the mileage markers on the Interstates (with an exception being I-19 in Arizona, whose length is measured in kilometers instead of miles). On even-numbered Interstates, mileage count increases to the east and decreases to the west (except on the I-90 portion of the New York State Thruway, I-90 between Chicago and Rockford, IL, the I-190 spur into O'Hare International Airport in Chicago, and the portion of I-76 in New Jersey, all of which count up going west); and on odd-numbered Interstates, mileage count increases to the north and decreases to the south and the exit numbers increase and decrease accordingly. Interstate 19 (abbreviated I-19) is an intrastate interstate highway located entirely within the state of Arizona, United States. ... Official language(s) English Spoken language(s) English 74. ... Wikimedia Commons has media related to: Interstate 90 Interstate 90 (abbreviated I-90) is the longest interstate highway in the United States at nearly 3,100 miles (5,000 kilometers). ... The New York State Thruway (officially the Governor Thomas E. Dewey Thruway) is a limited-access toll highway in the U.S. state of New York. ... MAJOR JUNCTIONS JUNCTION EXIT # Western Terminus U.S. 12/45 Mile 1. ... OHare International Airport (IATA: ORD, ICAO: KORD, FAA LID: ORD) is an airport located in Chicago, Illinois, United States, 17 miles (27 km) northwest of the Chicago Loop. ... Nickname: Motto: Urbs in Horto (Latin: City in a Garden), I Will Location in the Chicago metro area and Illinois Coordinates: , Country State Counties Cook, DuPage Settled 1770s Incorporated March 4, 1837 Government  - Mayor Richard M. Daley (D) Area  - City  234. ... Interstate 76 (abbreviated I-76) is an Interstate Highway in the United States, running 435 miles (700 km) from an interchange with Interstate 71 west of Akron, Ohio east to Interstate 295 near Camden, New Jersey. ...


Many northeastern states label exit numbers sequentially, regardless of how many miles have passed between exits. States in which Interstate exits are still numbered sequentially are: Connecticut, Delaware, Massachusetts, New Hampshire, New York, Rhode Island and Vermont. Maine, Pennsylvania, Virginia, Georgia, and Florida followed this system for a number of years, but recently converted to having the exit numbers correspond to mileage markers. The Pennsylvania Turnpike uses both the mile marker number and the sequential number. The mile marker number is used for signage, while the sequential number is used for numbering interchanges internally. The New Jersey Turnpike also has sequential numbering, but other interstates within New Jersey generally use mile markers. This Pennsylvania state route article needs to be cleaned up to conform to both a higher standard of article quality and accepted design standards outlined in the WikiProject Pennsylvania State Highways. ...


Miscellaneous facts

  • Alaska and Puerto Rico have roads designated as Interstates for funding purposes but which are neither planned for nor currently built to Interstate Highway standards. The public controlled-access highways of Puerto Rico are the Autopistas (PR-22, PR-52, and PR-53).
  • A widespread urban legend states that one out of every five miles of the Interstate Highway System must be built straight and flat so as to be usable by aircraft during times of war.[9]
  • Several interstate highways have buildings over the highway, using air rights.
Further information: List of structures built on top of interstates
  • The Interstate System has a few gaps that violate the Interstate Highway standards and AASHTO rules.
  • The most heavily traveled area of the Interstate Highway system is the 405 Freeway in Seal Beach, California, with a 2002 estimate of 377,000 vehicles a day. The least traveled section is Interstate 95 just north of Houlton, Maine (near the Canadian border), with 1,880 vehicles a day (2001 estimate).
  • The most extreme directional points of the Interstate Highway system are:
    • Northernmost-the northern termini of Interstates 5, 15, and 29, crossing the Canadian border at the 49th parallel near, respectively, Blaine, Washington, Sweetgrass, Montana, and Pembina, North Dakota.
    • Southernmost-a bend on Interstate H-1 in the Kaimuki section of Honolulu, Hawaii, less than half a mile (0.8 km) before its eastern terminus (lat. 21.3 deg. N.). The southernmost point in the 48 contiguous states is the southern terminus of Interstate 95 in Miami, Florida (lat. 25.8 deg. N.).
    • Easternmost-the northern terminus of Interstate 95 near Houlton, Maine, at the border of New Brunswick in Canada (long. 67.8 deg. W.).
    • Westernmost-the western terminus of Interstate H-1 in Kapolei, Hawaii (long. 158.06 deg. W.). The westernmost point in the contiguous states is a curve on Interstate 5 near Wolf Creek, Oregon (long. 123.23 deg. W.).

Official language(s) English[1] Spoken language(s) English 85. ... In Puerto Rico, Autopistas are controlled-access highways designed to replace the islands older Interstate highways (PR-1, PR-2, and PR-3). ... An urban legend or urban myth is similar to a modern folklore consisting of stories often thought to be factual by those circulating them. ... Air rights are a type of development right in real estate. ... Several interstate highways have buildings over the highway, using air rights. ... This sign in Oklahoma City, Oklahoma lists control cities of Wichita, Kansas and Ft. ... Interstate 95 (District of Columbia) redirects here. ... Wikimedia Commons has media related to: Interstate 95 Interstate 95 (abbreviated I-95) is a well-known, important, and heavily traveled highway in the United States Interstate Highway System. ... The Capital Beltway (in green) Interstate 495 (abbreviated I-495) is a freeway-class interstate highway which circles Washington, D.C. and its inner suburbs in Maryland and Virginia. ... Baltimore redirects here. ... Interstate 70 (abbreviated I-70) is a long interstate highway in the United States that runs from Interstate 15 about a mile from Cove Fort, Utah to a Park and Ride in Baltimore, Maryland. ... Wikimedia Commons has media related to: Interstate 83 Interstate 83 (abbreviated I-83) is an interstate highway in the eastern United States. ... New York, New York and NYC redirect here. ... Interstate 278 (abbreviated I-278) is an Interstate Highway in the U.S. states of New Jersey and New York. ... For other uses, see Washington, D.C. (disambiguation). ... Interstate 66 (abbreviated I-66) is an interstate highway in the eastern United States. ... The 8. ... Interstate 395 (abbreviated I-395) in Virginia is a 13 mile (21 km) long spur route that begins at a junction with Interstate 95 in Springfield, Virginia and ends in downtown Washington, District of Columbia. ... Interstate 695 is the unsigned designation for the Southeast Freeway in Washington, D.C., running east from I-395 past the north end of I-295 to end at Pennsylvania Avenue. ... For the most part, the Interstate Highway System in the United States is a connected system, with most roads completed. ... Interstate 405, colloquially referred to as The 405 (the four-oh-five), is one of the principal north-south highways in Southern California, and the major bypass of I-5 running through Southern California. ... Location of Seal Beach within Orange County, California. ... Interstate 95 is 305 miles long in the state of Maine, running from the New Hampshire border at Kittery to the Canadian border at Houlton. ... Location of town of Houlton in state of Maine Houlton is a town in Aroostook County, Maine, on the United States-Canada border, located at . ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... Wikimedia Commons has media related to: Interstate 15 “I-15” redirects here. ... Interstate 29 (abbreviated I-29) is an interstate highway in the Midwestern United States. ... The Peace Arch border Canada and the United States of America share the longest common border, officially known as the International Boundary, between any two countries that is not militarized or actively patrolled. ... The 49th parallel of north latitude forms part of the International Boundary between Canada and the United States from Manitoba to British Columbia on the Canadian side and from Minnesota to Washington on the U.S. side. ... Nickname: The Peace Arch city Location in the state of Washington Coordinates: Country United States State Washington County Whatcom County Incorporated May 20, 1890 Area  - City  8. ... Sweetgrass is a town located in Montana, near the United States-Canada border. ... Pembina (pronounced PEM in uh, with the stress on the first syllable) is a city located in Pembina County, North Dakota. ... Interstate H-1 is an intrastate interstate highway in Hawaii, United States, on the island of Oahu. ... Kaimuki, Hawaii is an old town once used as King Kalakauas ostrich farm, where they roamed wild over the current mountain side. ... For the city and county of Honolulu, see City & County of Honolulu. ... Interstate 95, the main Interstate Highway on the east coast of the United States, serves the Atlantic coast of Florida. ... “Miami” redirects here. ... Location of town of Houlton in state of Maine Houlton is a town in Aroostook County, Maine, on the United States-Canada border, located at . ... Motto: Spem reduxit (Hope restored) Capital Fredericton Largest city Saint John Official languages English, French (the only constitutionally bilingual province in the country) Government - Lieutenant-Governor Herménégilde Chiasson - Premier Shawn Graham (Liberal) Federal representation in Canadian Parliament - House seats 10 - Senate seats 10 Confederation July 1, 1867 (1st... Kapolei Hale is the civic center of the City of Kapolei. ... Wolf Creek is an unincorporated community in Josephine County, Oregon, United States, just off Interstate 5. ... Categories: Stub | Tunnels | Transportation in Colorado ... Interstate 70 (abbreviated I-70) is a long interstate highway in the United States that runs from Interstate 15 about a mile from Cove Fort, Utah to a Park and Ride in Baltimore, Maryland. ... For individual mountains named Rocky Mountain, see Rocky Mountain (disambiguation). ... Official language(s) English Capital Denver Largest city Denver Largest metro area Denver-Aurora Metro Area Area  Ranked 8th  - Total 104,185 sq mi (269,837 km²)  - Width 280 miles (451 km)  - Length 380 miles (612 km)  - % water 0. ... A continental divide is a line of elevated terrain which forms a border between two watersheds such that water falling on one side of the line eventually travels to one ocean or body of water, and water on the other side travels to another, generally on the opposite side of... Interstate 8 (abbreviated I-8) is an Interstate highway in the southwestern United States. ... The New River is a river that runs from Mexicali, Baja California, in Mexico into the United States through Calexico, California. ... Seeley is a census-designated place located in Imperial County, California. ... Wikimedia Commons has media related to: Interstate 90 Interstate 90 (abbreviated I-90) is the longest interstate highway in the United States at nearly 3,100 miles (5,000 kilometers). ... Nickname: Location in Massachusetts, USA Coordinates: , Country United States State Massachusetts County Suffolk County Settled 1630 Incorporated (city) 1822 Government  - Mayor Thomas M. Menino (D) Area  - City  89. ... “Seattle” redirects here. ... Wikimedia Commons has media related to: Interstate 95 Interstate 95 (abbreviated I-95) is a well-known, important, and heavily traveled highway in the United States Interstate Highway System. ... “Miami” redirects here. ... Canada and the United States of America share the longest common border among any two countries that is not militarized or actively patrolled. ... Interstate 878 is an unsigned route number for the Nassau Expressway in Queens, New York. ... New York State Route 878 (NY 878) is a state highway in the U.S. state of New York, forming the Nassau Expressway. ... John F. Kennedy International Airport (IATA: JFK, ICAO: KJFK), originally known as Idlewild Airport and colloquially known as Kennedy or simply JFK, is an international airport located in Jamaica, Queens, in southeastern New York City about 12 miles (19 km) from Lower Manhattan. ... Queens is geographically the largest of the five boroughs of New York City in the United States, and the most ethnically diverse county in the U.S. It is coterminous with Queens County in the State of New York and is located on western Long Island. ... At only 1. ... Nickname: Motto: Speramus Meliora; Resurget Cineribus (Latin for, We Hope For Better Things; It Shall Rise From the Ashes) Location in Wayne County, Michigan Coordinates: , Country State County Wayne County Founded 1701 Incorporation 1806 Government  - Type Strong Mayor-Council  - Mayor Kwame Kilpatrick (D) Area  - City  143. ...

Criticism

John Steinbeck, in his travelogue Travels With Charley, claimed "When we get these thruways across the whole country, as we will and must, it will be possible to drive from New York to California without seeing a single thing." Charles Kuralt echoed this statement in his biography A Life on the Road: "The interstate highway system is a wonderful thing. It makes it possible to go from coast to coast without seeing anything or meeting anybody. If the United States interests you, stay off the interstates." These quotes refer to the tendency of Interstate highways to emphasize more rapid, uninterrupted transportation than other road networks. This could be contrasted to the sometimes-romanticized perception of state and county routes, often two-lane highways, that may offer more chances to stop at local small businesses or see true rural America. John Ernst Steinbeck (February 27, 1902 – December 20, 1968) was one of the best-known and most widely read American writers of the 20th century. ... Travel literature is literature which records the people, events, sights and feelings of an author who is touring a foreign place for the pleasure of travel. ... Categories: Literature stubs | 1962 books | Books starting with T | Novels | John Steinbeck ... Charles Kuralt Charles Kuralt (10 September 1934 – 4 July 1997) was an award-winning American journalist whose long career with CBS made him famous as the motor home-traveling reporter whose chronicling of out-of-the-news American people and living made him as much of a household name as...


References

  1. ^ Table 1-36: Long-Distance Travel in the United States by Selected Trip Characteristics. Bureau of Transportation Statistics (1995). Retrieved on 2006-12-21.
  2. ^ Annual Vehicle Distance Traveled in Miles and Related Data. Federal Highway Administration (2003). Retrieved on 2006-12-21.
  3. ^ Petroski, Henry (2006), "On the Road", American Scientist 94 (5): pp. 396-399
  4. ^ http://www.snopes.com/autos/law/airstrip.asp
  5. ^ Interactive map
  6. ^ http://www.fhwa.dot.gov/policy/ohim/hs03/htm/hf10.htm 2003 FHWA summary
  7. ^ Field, David. "On 40th birthday, interstates face expensive midlife crisis." Insight on the News, 29 July 1996, 40-42.
  8. ^ [South Dakota v. Dole]
  9. ^ Weingroff, Richard F. (May/June 2000). ONE MILE IN FIVE: Debunking the Myth. Federal Highway Administration. Retrieved on 2006-06-29.
  10. ^ Attachment V, Ownership and Maintenance Agreement for the Wilson Bridge, Woodrow Wilson Bridge Initial Financial Plan. Woodrow Wilson Bridge Project. Retrieved on 2007-08-02.
  11. ^ Maryland's Interstate SystemPDF (14.8 KiB)
  12. ^ New York State Department of Transportation - Region 11 (New York City) Built and Unbuilt Arterial System

Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... December 21 is the 355th day of the year (356th in leap years) in the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... December 21 is the 355th day of the year (356th in leap years) in the Gregorian calendar. ... is the 210th day of the year (211th in leap years) in the Gregorian calendar. ... Year 1996 (MCMXCVI) was a leap year starting on Monday (link will display full 1996 Gregorian calendar). ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... is the 180th day of the year (181st in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 214th day of the year (215th in leap years) in the Gregorian calendar. ... The Portable Document Format (PDF) is the file format created by Adobe Systems in 1993 for document exchange. ... A kibibyte (a contraction of kilo binary byte) is a unit of information or computer storage, commonly abbreviated KiB (never kiB). 1 kibibyte = 210 bytes = 1,024 bytes The kibibyte is closely related to the kilobyte, which can be used either as a synonym for kibibyte or to refer to...

See also

Contraflow lane reversal is a program designed for quick emergency evacuation of an area. ... A gasoline tax (also known as a gas tax, petrol tax, fuel tax or fuel duty) is a sales tax imposed on the sale of gasoline. ... A highway patrol is either a police agency created primarily for the purpose of overseeing and enforcing traffic safety compliance on roads and highways, such as the California Highway Patrol, or a detail within an existing local or regional police agency that is primarily concerned with such duties, such as... In general, the concept of a freeway implies that all vehicles must be motorized and have a certain minimum amount of power; signs are usually posted to indicate this, either in the form of a list of disallowed vehicle types, or a minimum travel speed. ... List of articles related to roads and highways around the world. ... The mile-log system, also known as mile-based exit numbers, is used by a number of U.S. states to determine exit numbering on Interstate highways and other freeways (and occasionally expressway-quality surface roads). ... Harden Parkway in Salinas, CA. For other uses, see Parkway (disambiguation). ... Here is a list of major freeway and expressway systems: This list is incomplete; you can help by expanding it. ... Here is a chronology chart for highway sign erections of the Interstate Highway System: Started This section lists designation start dates. ... There are very few or no other articles that link to this one. ...

External links

Wikimedia Commons has media related to:
Interstate Highways
Main Interstate Highways (multiples of 5 in pink)
4 5 8 10 12 15 16 17 19 20 22 24 25 26 27 29 30
35 37 39 40 43 44 45 49 55 57 59 64 65 66 68 69
70 71 72 73 74 75 76 (W) 76 (E) 77 78 79 80 81 82
83 84 (W) 84 (E) 85 86 (W) 86 (E) 87 88 (W) 88 (E) 89 90
91 93 94 95 96 97 99 (238) H-1 H-2 H-3
Unsigned  A-1 A-2 A-3 A-4 PRI-1 PRI-2 PRI-3
Lists  Main - Auxiliary - Suffixed - Business - Proposed - Unsigned
Gaps - Intrastate - Interstate standards - Replaced - Proposed auxiliary

  Results from FactBites:
 
Interstate Highway System: Later Road Development: Wisconsin History Explorer of the Wisconsin Historical Society (1454 words)
Although the interstate highway system was not completed nationwide until the 1970s, it had been in the planning stages for nearly half a century.
Interest in the interstate system was renewed in 1939, when the Bureau of Public Roads submitted a report to Congress advocating the construction of a special system of direct interregional highways.
Nationally, with connection of the control points, the interstate highway system would serve 90 percent of the cities in the United States with populations over 50,000, 65 percent of the urban population, and 50 percent of the rural population.
Interstate Highway System: Information from Answers.com (5299 words)
The interstate system was authorized by the Federal-Aid Highway Act of 1956, popularly known as the National Interstate and Defense Highways Act of 1956.
One potential civil defense use of the Interstate Highway System is for the emergency evacuation of cities in the event of a potential nuclear war.
Auxiliary Interstate Highways are given three-digit route numbers, which consist of a single digit prefixed to the two-digit number of a primary Interstate highway, to designate spur or loop routes branching from either the primary route or one of its other auxiliary routes.
  More results at FactBites »

 
 

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