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:

March 25, 2025 - Press Release:

Beginning on Monday, March 31, 2025, S.D. Highway 46 will be closed to through traffic from S.D. Highway 11 to 297th Street (Hudson Curve). This closure will be in place for the duration of the reconstruction project through November 2025.

Highway 46 from 297th Street (Hudson Curve) will be constructed in phases, and traffic will be maintained through the work zone utilizing temporary roadway widening and surfacing. The work from 297th Street (Hudson Curve) to the Iowa line is expected to take approximately three months. During this closure, motorists will be directed to the signed detour route on Highway 11, Lincoln County Highway 152 and Lincoln County Highway 143. Access to homes and property adjacent to the project will be maintained for local traffic.

Construction work to be completed during the second year of this two-year project includes full roadway grading from Highway 11 to the Iowa line, replacement of the four remaining structures, interim surfacing, and new signing.

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March 14, 2025:

The reconstruction project on S.D. Highway 46, from east edge of the City of Beresford to the Iowa line, is tentatively scheduled to resume on Tuesday, April 1, 2025. The actual road closure date will depend on weather and road conditions along the project. Additional information will be released when the closure date is confirmed.

Work to be completed during the second year of this two-year reconstruction project involves full roadway grading from S.D. Highway 11 to the Iowa state line, replacement of the four remaining structures, interim surfacing, and new signing.

Highway 46 from Highway 11 to 297th Street (Hudson Curve) will be closed to through traffic during construction. During the closure, motorist will be directed to the signed detour route on S.D. Highway 11, Lincoln County Highway 152, and Lincoln County Highway 143. Access to residences and property adjacent to the project will be maintained for local traffic.

New Right of Way (ROW) fencing, installation of remaining erosion control items, and project cleanup will be completed on the finished section of the project from the City of Beresford to Highway 11. This stretch of Highway 46 will be open to traffic as the remaining work is outside of the roadway shoulder. Please be cautious through the work zone and be alert for equipment and workers.

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Jan. 16, 2025:
S.D. Highway 46 from Beresford to S.D. Highway 11 remains open through the winter months. This section of Highway 46 currently has temporary surfacing for this multi-year project. The speed limit is reduced to 55mph through the work zone. Please drive with caution.