South Dakota Highway 34

South Dakota Highway 34 (SD 34) is a state route that runs parallel to Interstate 90 across the entire state of South Dakota. It begins at the Wyoming border west of Belle Fourche, as a continuation of Wyoming Highway 24 (WYO 24). The eastern terminus is at the Minnesota border east of Egan, or southwest of Airlie, Minnesota, where it continues as Minnesota State Highway 30 (MN 30). It is just over 419 miles (674 km) in length, making it the longest state highway in South Dakota.

Highway 34 marker

Highway 34

Route of SD 34 (in red)
Route information
Maintained by SDDOT
Length419.010 mi[1][2][3][4] (674.331 km)
Existed1926–present
Tourist
routes		 Lewis and Clark Trail
Native American Scenic Byway
Major junctions
West end WYO 24 at Wyoming state line
Major intersections
East end MN 30 at Minnesota state line
Location
CountryUnited States
StateSouth Dakota
CountiesButte, Lawrence, Meade, Ziebach, Haakon, Stanley, Hughes, Hyde, Buffalo, Jerauld, Sanborn, Miner, Lake, Moody
Highway system
  • South Dakota State Trunk Highway System
← SD 32→ SD 35

History
SD 34 in Belle Fourche

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 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.[5]

In the late 1960s, a portion of SD 34 (along with U.S. Highway 14) was upgraded as part of the construction of Interstate 90. The segment between Whitewood and Sturgis (exits 23 and 30) remains signed with I-90 and U.S. 14.

A 10-mile (16 km) segment of SD 34 in Sanborn County has been upgraded to 4 lanes. This is part of a 4-lane route from Huron to Mitchell via South Dakota Highway 37.

Major intersections
CountyLocationmi[1][2][3][4]kmDestinationsNotes
ButteWest Butte0.0000.000
 WYO 24 west – Hulett		Continuation into Wyoming
Belle Fourche9.91915.963 US 85 – Spearfish, Belle Fourche
LawrenceNorth Lawrence27.267–
27.371		43.882–
44.049

 I-90 west / US 14 west – Spearfish		Western end of I-90/US 14 concurrency
MeadeSturgis33.873–
34.294		54.513–
55.191



 I-90 east / US 14 east / US 14A west / SD 79 south – Rapid City, Deadwood, Lead		Eastern end of I-90/US 14 concurrency, eastern terminus of US 14A, western end of SD 79 concurrency
Southwest Meade39.31963.278
 SD 79 north – Bear Butte State Park, Newell		Eastern end of SD 79 concurrency
Howes113.051181.938
 SD 73 north – US 212, Faith		Western end of SD 73 concurrency
Ziebach
 No major junctions
HaakonEast Haakon138.931223.588
 SD 73 south – Phillip		Eastern end of SD 73 concurrency
StanleyNorth Stanley–South Stanley line167.189269.065
 SD 63 north / Lewis and Clark Trail / Native American Scenic Byway – Eagle Butte		Western end of SD 63 concurrency
167.673269.844

 US 14 west / SD 63 south – Phillip		Western end of US 14 concurrency, eastern end of SD 63 concurrency
Fort Pierre204.473329.067
 SD 1806 north – Oahe Dam		Western end of SD 1806 concurrency
205.362330.498

 US 83 south / SD 1806 south / Lewis and Clark Trail / Native American Scenic Byway		Western end of US 83 concurrency, eastern end of SD 1806 concurrency
HughesPierre206.804332.819





 US 14 east / US 83 north / Lewis and Clark Trail / US 14 Truck begins / US 83 Truck begins		US 14 Truck & US 83 Truck begins, eastern end of US 14/US 83 concurrency
208.796336.025



 US 14 Truck east / US 83 Truck north		Eastern end of US 14 Truck & US 83 Truck concurrency
HydeCrow Creek254.528409.623
 SD 47 north – Highmore		Northern end of SD 47 concurrency
BuffaloFort Thompson266.869429.484
 SD 47 south / Lewis and Clark Trail / Native American Scenic Byway – Fort Thompson, Big Bend Dam		Southern end of SD 47 concurrency
267.812431.002
 SD 249 south – Big Bend Dam		Northern terminus of SD 249
Crow Creek272.369438.335
 SD 50 east / Lewis and Clark Trail / Native American Scenic Byway – Chamberlain		Western terminus of SD 50
Elvira Township289.300465.583 SD 45 – Gann Valley, Miller
JerauldWessington Springs Township316.095508.706 US 281 to I-90 / US 14
SanbornWoonsocket–Silver Creek
township line		328.326528.389
 SD 37 north – Huron		Western end of SD 37 concurrency
Union Township338.415544.626
 SD 37 south – Mitchell		Eastern end of SD 37 concurrency
MinerRoswell Township356.352573.493
 SD 25 south – Epiphany		Western end of SD 25 concurrency
Howard Township362.381583.196
 SD 25 north – DeSmet		Eastern end of SD 25 concurrency
Clearwater Township370.445596.173
 US 81 south – Salem		Western end of US 81 concurrency
LakeMadison383.519617.214
 US 81 north – Arlington		Eastern end of US 81 concurrency
Lake View Township387.529623.667
 SD 19 south – Humboldt		Northern terminus of SD 19
MoodyEgan Township402.961–
403.153		648.503–
648.812		 I-29 – Sioux Falls, Brookings
Lone Rock Township419.010674.331
 MN 30 east – Pipestone		Continuation into Minnesota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References
  1. "State Highway Log: Rapid City Region" (PDF). South Dakota Department of Transportation. January 2012. Retrieved December 24, 2013.
  2. "State Highway Log: Pierre Region" (PDF). South Dakota Department of Transportation. January 2012. Retrieved December 24, 2013.
  3. "State Highway Log: Aberdeen Region" (PDF). South Dakota Department of Transportation. January 2012. Retrieved December 24, 2013.
  4. "State Highway Log: Mitchell Region" (PDF). South Dakota Department of Transportation. January 2012. Retrieved December 24, 2013.
  5. "S.D. 34 Will Become Major East-West Rd". The Argus-Leader. Sioux Falls, South Dakota. February 21, 1961. p. 14. Retrieved January 21, 2020 – via Newspapers.com. open access
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