U.S. Route 12

U.S. Route 12
US 12 highlighted in red
Route information
Length	2,482 mi (3,994 km)
Existed	November 11, 1926 (November 11, 1926)[1]–present
Major junctions
West end	US 101 at Aberdeen, WA
Major intersections	I-5 near Chehalis, WA I-15 at Helena, MT I-94 at various locations I-29 / US 81 at Summit, SD I-35W at Minneapolis, MN I-35E / US 10 / US 52 at St Paul, MN I-39 / I-90 at Madison, WI I-55 at Hodgkins, IL I-65 / I-90 at Gary, IN I-69 at Coldwater, MI
East end	Cass Avenue in Detroit, MI
Location
Country	United States
States	Washington, Idaho, Montana, North Dakota, South Dakota, Minnesota, Wisconsin, Illinois, Indiana, Michigan
Highway system
United States Numbered Highway System List Special Divided
← US 11 → US 13

U.S. Route 12 or U.S. Highway 12 (US 12) is an east–west United States Numbered Highway, running from Aberdeen, Washington, to Detroit, Michigan, for almost 2,500 miles (4,000 km). The highway has mostly been superseded by Interstate 90 (I-90) and I-94, but, unlike most U.S. Highways that have been superseded by an Interstate, US 12 remains intact as an important link for local and regional destinations. The highway's western terminus in Aberdeen is at an intersection with US 101, while the highway's eastern terminus in Downtown Detroit is at the corner of Michigan and Cass avenues, near Campus Martius Park.