S.D. Highway 46 - From Beresford to Iowa State Line
Project Updates:
March 24, 2026 - Press Release:
On Tuesday, April 7, 2026, S.D. Highway 46 from the east edge of the City of Beresford to 297th Street (Hudson Curve) is scheduled to close to complete the surfacing portion of the project. During the closure, motorists will be directed to the signed detour route on Interstate 29, Lincoln County Road 152, and Lincoln County Road 143.
Surfacing work from 297th Street (Hudson Curve) to the Iowa state line is also planned to start in April. Traffic will be maintained using a half-width construction approach, with traffic maintained on one half of the roadway while work is completed on the other half of the roadway.
Access to residences and properties adjacent to the project will be maintained for local traffic. The contractor will be discussing individual access with each landowner located on or near the project.
March 24, 2026:
Construction on this multi-year project is scheduled to resume the week of April 6, 2026. The roadway is planned to be closed and traffic detoured tentatively on Tuesday, April 7, 2026. Access for local residents will be maintained at all times. The contractor will be discussing individual access with each landowner located on or near the project.
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Detour Map:
Project Summary:
2026:
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 8” thick concrete pavement placed 28’ wide, with 6’ wide asphalt shoulders, new pavement marking and permanent signing. In conjunction with the S.D. Highway 46 paving, S.D. Highway 11 will be resurfaced from the intersection with S.D. Highway 46 through the City of Alcester to the intersection with 302nd St.
Construction will be broken into two phases. Phase 1 starts at the east edge of Beresford and ends at the intersection with 297th St (Hudson curve). Phase 2 will be from the 297th St intersection to the Iowa state line.
During construction of Phase 1, 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 1 includes Interstate 29 to Lincoln Co 152 to Lincoln Co 143 back to S.D. Highway 46. Phase 2 will be completed under traffic using temporary widening.
The contractor will be discussing individual access with each landowner located on or near the project.
2024-2025:
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.