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 states, Mountain West, Great Pla ...

across the entire state of

South Dakota South Dakota (; Sioux language, Sioux: , ) is a U.S. state, 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 Dakota people, Dakota Sioux ...

. It begins at the

Wyoming Wyoming ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States, Western United States. It borders Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho t ...

border west of Belle Fourche, 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 th ...

(WYO 24). The eastern terminus is at the

Minnesota Minnesota ( ) is a U.S. state, state in the Upper Midwestern region of the United States. It is bordered by the Canadian provinces of Manitoba and Ontario to the north and east and by the U.S. states of Wisconsin to the east, Iowa to the so ...

border east of Egan, or southwest of Airlie, Minnesota, 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 in ...

(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 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) 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: Native American ethnography * Huron people, who have been called Wyandotte, Wyandot, Wendat and Quendat * Huron language, an Iroquoian language * Huron-Wendat Nation, or Huron-Wendat First Nation, or Nation Huronne-Wendat * N ...

to Mitchell via South Dakota Highway 37.

Major intersections

References

External links

History

Major intersections

See also

References

External links