Route information | ||||
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Maintained by SDDOT | ||||
Length | 319.24 mi[1] (513.77 km) | |||
Existed | 1926–present | |||
Major junctions | ||||
West end | US 12 at the North Dakota state line | |||
East end | US 12 at the Minnesota state line | |||
Location | ||||
Country | United States | |||
State | South Dakota | |||
Counties | Perkins, Corson, Walworth, Edmunds, Brown, Day, Roberts, Grant | |||
Highway system | ||||
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U.S. Highway 12 (US 12) is a part of the United States Numbered Highway System that travels from Aberdeen, Washington, to Detroit, Michigan. In the state of South Dakota, US 12 extends from the North Dakota border east to the Minnesota border.