List of Interstate Highways in South Dakota

Last updated

Interstate Highways in South Dakota
I-90.svg I-229.svg
Business Loop 90.svg
Standard South Dakota highway shields
List of Interstate Highways in South Dakota
Interstate Highways highlighted in red
System information
NotesSouth Dakota highways are generally state-maintained.
Highway names
Interstates Interstate X (I-X)
US Highways U.S. Highway X (US X)
State (State) Highway X (SD X)
System links
  • South Dakota State Trunk Highway System

The Interstate Highways in South Dakota are the segments of the Dwight D. Eisenhower National System of Interstate and Defense Highways owned and maintained by the South Dakota Department of Transportation in the US state of South Dakota.

Contents

Mainline highways

NumberLength (mi)Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
I-29.svg I-29 252.50406.36 I-29 at the Iowa state line at Dakota Dunes I-29 / US 81 at the North Dakota state line north-northwest of Victor 01958-01-011958current 
I-90.svg I-90 412.76664.27 I-90 at the Wyoming state line west-northwest of North Spearfish I-90 at the Minnesota state line north-northeast of Valley Springs —— 
I-190.svg I-190 1.722.77 US 16 / SD 44 / West Boulevard in Rapid City I-90 / US 14 / US 16 / SD 79 in Rapid City 01962-01-011962current 
I-229.svg I-229 11.3318.23 I-29 in Sioux Falls I-90 / CR 125 north of Sioux Falls 01966-01-011966current 

Business routes

NumberLength (mi)Length (km)Southern or western terminusNorthern or eastern terminusFormedRemovedNotes
Business Loop 29.svg I-29 BL ——————Serves Elk Point
Business Spur 29.svg I-29 BS ——————Serves Sioux Falls
Business Spur 29.svg I-29 BS ——————Serves Brookings
Business Loop 90.svg I-90 BL ——————Serves Spearfish
Business Loop 90.svg I-90 BL ——————Serves Sturgis
Business Loop 90.svg I-90 BL ——————Serves Rapid City
Business Loop 90.svg I-90 BL ——————Serves Wall
Business Loop 90.svg I-90 BL ——————Serves Kadoka
Business Loop 90.svg I-90 BL ——————Serves Murdo
Business Loop 90.svg I-90 BL ——————Serves Presho
Business Loop 90.svg I-90 BL ——————Serves Chamberlain
Business Loop 90.svg I-90 BL ——————Serves Mitchell
Business Spur 90.svg I-90 BS ——————Serves Sioux Falls
Downtown Loop 229.svg I-229 Dwtn. ——————Serves Sioux Falls

See also

References

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