Hanson County - S.D. Highway 42 Over the James River

Detour Map for SD HWY 42

With the bridge out, traffic is being detoured on SD 37, SD 44, and US 81.


Project Summary: 

The SD 42 bridge over the James River is being replaced due to age and condition. The new structure will be over 200’ longer than the old structure to allow for a larger waterway opening for flood flows. The new structure will also be 6’ wider than the old structure, which will provide a 6’ shoulder on the outside of each 12’ lane. The roadway leading up to the structure at both ends of the bridge will be re-graded and paved with asphalt.


Project Timeline: 

The current schedule indicates that construction should be completed in late July 2022. 

Project Updates: 

The contractor has installed the crushed rock for the work platform necessary to remove and construct the new bridge. The contractor has nearly completed the grading work for the project and has removed the existing bridge. Work on the new structure has also begun. All abutment and pier work is completed. All girders are placed on the entire structure. Crews have completed placing falsework and deck steel on the new structure. Deck pour is scheduled for the first part of May.

  • Completed Deck Pour on May 3rd
  • Curing of Bridge Deck until May 10th
  • Abutment Wing Wall work May 10th to May 25th
  • Bridge Barrier Curb work May 16th to June 17th
  • Bridge Approach and Sleeper Slab work end begins at the end of May

Project Photos: 


Project Contract Amount:

$7.2 Million


Contact Information: 

Contractor: Perrett Construction, Ltd; Valentine, NE

SDDOT: Rick Brandner (605) 995-3345





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