S.D. Highway 46 - From Beresford to Iowa State Line

Project Summary:

This project is a fifteen-and-one-half mile-long full reconstruction of S.D. Highway 46 in Union and Lincoln Counties. The project begins at the east edge of the city of Beresford and ends at the Iowa state line. Work on this project will consist of full roadway grading, structure replacement, culvert replacement, interim surfacing, and new permanent signing.

Construction is broken into three phases and covers two construction seasons.

Phase one starts at the east edge of Beresford and ends at the S.D. Highway 11/S.D. Highway 46 intersection. Work in phase one will be completed during the 2024 season with an interim completion date of Nov. 2024.

Phase two will be from the Highway 11/ Highway 46 intersection to the Hudson curve.

Phase three will be completed under traffic from the Hudson curve to the Iowa state line. Phase two and three will be completed during the 2025 construction season.

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 for phase one includes Interstate 29 to Lincoln County 152 and Highway 11. Phase two detour includes Highway 11 to Lincoln Co 152 and Lincoln Co 143. Phase three will be completed under traffic using temporary widening.

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Project Timeline:

Spring 2024 - Nov. 2025

Project Updates:

April 15, 2025 – May 15, 2025, Completed Work: The existing asphalt and gravel has been removed, and rough grading has begun from Highway 11 to 482nd Avenue. While some short stretches are up to grade, most of the area is still below the finished grade elevation. New culvert installations have begun, including the box culvert installation between 483rd and 484th Avenue.

Anticipated work in May 15, 2025 – June 15, 2025: The contractor will begin finish grading at Highway 11 and work east. Gravel placement will follow close behind. The new cattle pass between 480th and 481st Avenue will be installed, backfilled, and rough grading finished. New approach pipes will also be installed. Work will continue on the new structure between 483rd and 484th Avenue. 480th Avenue and 482nd Avenue will continue to be closed until grading and culvert installation is completed.