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Encyclopedia > US 12

United States Highway 12 is an east-west United States highway. US 12 is now the only US route still serving Detroit, Michigan, whose downtown street grid was laid out perfectly for the five-way intersection of US 12, US 10, US 16, US 112, and US 25.



As of 2004, the highway's eastern terminus is in Detroit, Michigan at an indeterminate point downtown. Its western terminus is in Aberdeen, Washington at an intersection with U.S. Highway 101.

States Traversed

The highway passes through the following states:

Historical Route Information

Old Route 12 in Michigan

Old U.S. 12 in Michigan runs from downtown Detroit to Chicago. It was replaced by Interstate 94 in 1952, and the state of Michigan re-routed the US 12 designation to the former route of U.S. Highway 112.

It was an old highway that ran through the middle of the major towns and cities of Michigan between Detroit and Chicago. In most cases the road is still there, and is named either "Michigan Avenue", "Old U.S. 12" or the "Red Arrow Highway", named after a World War I army division. You can still drive the highway from Belle Isle in Detroit all the way to The Magnificent Mile in Chicago. There are only a few places were you have to navigate around the new Interstate. The major break in Old U.S. 12 is in the middle of Michigan half way between the village of Parma and the city of Albion. It's at this point that I-94 cuts south a bit and bisects the old highway, forcing a motorist to navigate north on smaller roads.

The highway is considered an important historic road like Route 66. Some of it had been the original Territorial Road of Michigan laid out in the early 1800s.

Michigan Cities on Old Route

Detroit, Michigan, Dearborn, Michigan, Ypsilanti, Ann Arbor, Michigan, Chelsea, Michigan, Grass Lake, Michigan, Jackson, Michigan, Parma, Michigan, Albion, Michigan, Marshall, Michigan, Battle Creek, Michigan, Kalamazoo, Michigan, St. Joseph, Michigan, Niles, Michigan, Gary, Indiana, Chicago, Illinois

For a detailed discussion of the current U.S. 12 in Michigan, see the link for the old U.S. Highway 112, which received the designation U.S. 12 in the early 1960s.

Related US Routes


  • Endpoints of US highways (http://www.geocities.com/usend1019/End012/end012.htm) (used with permission)

  Results from FactBites:
U.S. Route 12 - Wikipedia, the free encyclopedia (1510 words)
U.S. Route 12, or US 12, is an east-west United States highway running from downtown Detroit almost 2500 miles (4000 km) to Grays Harbor on the Pacific Ocean in the northwest corner of the state of Washington.
From western Wayzata to Interstate 394 in Minnetonka, U.S. 12 is a six-lane freeway.
As U.S. 12 nears Madison, Wisconsin, it merges with U.S. and U.S. to form the West Beltline Highway, a four to six-lane freeway that encircles the south and west portions of the city, with a speed limit of 55 m.p.h.
  More results at FactBites »



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