South Dakota Highway 34 (SD 34) is a state route that runs parallel to

Interstate 90 Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at . It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and ...

across the entire 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 ...

. It begins at the

Wyoming Wyoming () is a U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho to the west, Utah to the south ...

border west of

Belle Fourche Belle Fourche (; ) is a city in and the county seat of Butte County, South Dakota, United States. Its population was 5,617 at the 2020 census. It is near the geographic center of the United States, which moved some 550 miles northwest from the g ...

, as a continuation of

Wyoming Highway 24 Wyoming Highway 24 (WYO 24), also known as the Bear Lodge Highway, is a state highway in Crook County, Wyoming, United States. that connects U.S. Route 14 (US 14) in Carlile Junction with South Dakota Highway 34 (SD 34) at the S ...

(WYO 24). The eastern terminus is at 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 east of

Egan Egan may refer to: People * Egan (surname) * Egan (given name) Places in the United States * Egan, Illinois, an unincorporated community * Egan, Louisiana, an unincorporated community and census-designated place * Egan, South Dakota, a city * Eg ...

, or southwest of

Airlie, Minnesota Airlie is an unincorporated community in Sweet Township, Pipestone County, Minnesota, United States. It is located near Minnesota State Highway 30 between Pipestone, Minnesota and Egan, South Dakota, one mile east of the Minnesota – South Dako ...

, where it continues as

Minnesota State Highway 30 Minnesota State Highway 30 (MN 30) is a highway in southwest and southeast Minnesota, which runs from South Dakota Highway 34 at the South Dakota state line near Airlie, west of Pipestone, and continues to its eastern terminus at its inters ...

(MN 30). It is just over in length, making it the longest state highway in South Dakota.

History

When first implemented in 1926, the western terminus was at

South Dakota Highway 45 South Dakota Highway 45 is a state highway that runs north to south across much of central South Dakota, United States. The northern terminus is at the North Dakota border as a continuation of North Dakota Highway 3, and runs south to South Dak ...

near Gann Valley. In the 1940s and early 1950s, a road was gradually built from

Pierre Pierre is a masculine given name. It is a French form of the name Peter. Pierre originally meant "rock" or "stone" in French (derived from the Greek word πέτρος (''petros'') meaning "stone, rock", via Latin "petra"). It is a translation ...

to SD 45 via Fort Thompson, and SD 34 was extended west along it upon its completion. A further extension westward occurred in February 1961, when SD 34 absorbed the alignment of South Dakota Highway 24. In the late 1960s, a portion of SD 34 (along with

U.S. Highway 14 U.S. Route 14 (abbreviated U.S. 14 or US 14), an east–west route, is one of the original United States highways of 1926. It currently has a length of 1,398 miles (2,250 km), but it had a peak length of 1,429 miles (2,300 km). For ...

) was upgraded as part of the construction of

. The segment between Whitewood and Sturgis (exits 23 and 30) remains signed with I-90 and U.S. 14. A segment of SD 34 in Sanborn County has been upgraded to 4 lanes. This is part of a 4-lane route from

Huron Huron may refer to: People * Wyandot people (or Wendat), indigenous to North America * Wyandot language, spoken by them * Huron-Wendat Nation, a Huron-Wendat First Nation with a community in Wendake, Quebec * Nottawaseppi Huron Band of Potawatomi ...

Mitchell Mitchell may refer to: People *Mitchell (surname) *Mitchell (given name) Places Australia * Mitchell, Australian Capital Territory, a light-industrial estate * Mitchell, New South Wales, a suburb of Bathurst * Mitchell, Northern Territo ...

via

South Dakota Highway 37 } South Dakota Highway 37 (SD 37) is a state route that runs across eastern South Dakota. It begins at the Nebraska border northeast of Niobrara, Nebraska, as a continuation of Nebraska Highway 14. It runs to the North Dakota border north of Hec ...

Major intersections

References

External links

History

Major intersections

See also

References

External links