Irene - S.D. Highway 46 from U.S. Highway 81 to Irene

Detour Map:

Project Summary:

This project is a 12-mile-long full reconstruction of S.D. Highway 46 in Yankton County. The project begins at the US81/SD46 intersections and ends at the west edge of the City of Irene. Work on this project will consist of full roadway grading, structure replacement, culvert replacement, interim surfacing, intersection lighting at US81/SD46 and new permanent signing.

During construction, the highway will be closed to through traffic. Access to residents and landowners adjacent to the project will be maintained, but travelers are encouraged to use the signed detour route around the project. The detour route around the project includes S.D. Highway 19 to U.S. Highway 18 and U.S. Highway 81.

Project Timeline: 

November 17, 2023 completion date.


Project Press Releases: 

Future Press Releases will be listed here. 

Project Updates: 

Future updates will be listed here. 

Project Photos:

Future updates will be listed here. 

Project Contract Amount:

$19.3 million


Project Contacts:

Contractor: Foothills Contracting, Inc.

SDDOT: Brian Wenisch (605) 668-2929 x 48


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