U.S. Highway 12 (US 12) is a part of the

United States Numbered Highway System The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these hi ...

that travels from

Aberdeen, Washington Aberdeen () is a city in Grays Harbor County, Washington, United States. The population was 17,013 at the 2020 census. The city is the economic center of Grays Harbor County, bordering the cities of Hoquiam and Cosmopolis. Aberdeen is occasi ...

, to

Detroit, Michigan Detroit ( , ; , ) is the largest city in the U.S. state of Michigan. It is also the largest U.S. city on the United States–Canada border, and the seat of government of Wayne County. The City of Detroit had a population of 639,111 at ...

. In the state of

South Dakota South Dakota (; Sioux language, Sioux: , ) is a U.S. state in the West North Central states, North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Lakota people, Lakota and Dakota peo ...

, US 12 extends from the

North Dakota North Dakota () is a U.S. state in the Upper Midwest, named after the Native Americans in the United States, indigenous Dakota people, Dakota Sioux. North Dakota is bordered by the Canadian provinces of Saskatchewan and Manitoba to the north a ...

border east to the

Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over to ...

border.

Route description

US 12 enters South Dakota from North Dakota as a rural two-lane highway about west-northwest of Lemmon before entering the

Standing Rock Indian Reservation The Standing Rock Reservation ( lkt, Íŋyaŋ Woslál Háŋ) lies across the border between North and South Dakota in the United States, and is inhabited by ethnic "Hunkpapa and Sihasapa bands of Lakota Oyate and the Ihunktuwona and Pabaksa ...

. For approximately the next , US 12 runs parallel to the border of North Dakota, sometimes within less than . At

Walker Walker or The Walker may refer to: People *Walker (given name) *Walker (surname) *Walker (Brazilian footballer) (born 1982), Brazilian footballer Places In the United States *Walker, Arizona, in Yavapai County *Walker, Mono County, California * ...

, US 12 heads southeast for , where it crosses the Missouri River at Mobridge, exiting the reservation. From there, it continues east for , until it meets with US 83 near

Selby Selby is a market town and civil parish in the Selby District of North Yorkshire, England, south of York on the River Ouse, with a population at the 2011 census of 14,731. The town was historically part of the West Riding of Yorkshire until ...

. It overlaps US 83 for . After leaving US 83, it turns due east and spends about as a rural two-lane highway again. A few miles before reaching

Aberdeen Aberdeen (; sco, Aiberdeen ; gd, Obar Dheathain ; la, Aberdonia) is a city in North East Scotland, and is the third most populous city in the country. Aberdeen is one of Scotland's 32 local government council areas (as Aberdeen City), and ...

, it becomes an at-grade expressway. After the junction with US 281, it goes back to being two lanes for a few miles through Aberdeen and past

Aberdeen Regional Airport Aberdeen Regional Airport is a city-owned, public-use airport located two nautical miles (3.7 km) east of the central business district of Aberdeen, a city in Brown County, South Dakota, United States. It is mostly used for general aviation ...

, before once again becoming a four-lane expressway, until before

Waubay Waubay is a city in Day County, South Dakota, United States. The population was 473 at the 2020 census. Waubay had its start in the early 1880s when the railroad was extended to that point. The school district is Waubay Public 18-3. The local ...

. East of Waubay it becomes again an at-grade expressway until it meets with

I-29 Interstate 29 (I-29) is an Interstate Highway in the Midwestern United States. I-29 runs from Kansas City, Missouri, at a junction with I-35 and I-70, to the Canada–US border near Pembina, North Dakota, where it connects with Manitoba P ...

near

Summit A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topography, topographic terms acme, apex, peak (mountain peak), and zenith are synonymous. The term (mountain top) is generally used ...

. The speed limit from Aberdeen to I-29 is except through the communities of Groton,

Webster Webster may refer to: People *Webster (surname), including a list of people with the surname *Webster (given name), including a list of people with the given name Places Canada *Webster, Alberta *Webster's Falls, Hamilton, Ontario United State ...

, and Waubay. From there, it heads southeast until

Milbank Milbank LLP (commonly known as Milbank) is an international law firm headquartered in New York City. It also has offices in Washington, D.C., Los Angeles, London, Frankfurt, Munich, Tokyo, Hong Kong, São Paulo, Seoul, Singapore, and Beijing. Hi ...

. At Milbank, it continues east for , until it crosses into

at Big Stone City, just south of

Big Stone Lake Big Stone Lake ( dak, Íŋyaŋ Tháŋka Bdé) is a long, narrow freshwater lake and reservoir on the border between western Minnesota and northeastern South Dakota in the United States. Description The lake covers , stretching from end to end ...

. The South Dakota section of US 12 is legally defined at South Dakota Codified Laws § 31-4-132.

History

Major intersections

References

External links

Route description

History

Major intersections

See also

References

External links