Interstate 90 reconstruction project concludes in McCook County

The South Dakota Department of Transportation said work is nearing completion on the Interstate 90 reconstruction project from Salem to Humboldt.  A significant traffic switch will occur there today. Motorists are advised that all westbound traffic will be moved from the eastbound lanes and guided into the westbound lanes so repainting of lane lines can be completed for eastbound traffic.

Eastbound lanes are scheduled to be repainted today, and tomorrow.  When completed, two-way traffic control measures will be removed and eastbound and westbound traffic will be fully operational. Motorists should be aware that some temporary lane closures may still be in place during project clean-up work.

All exits along this reconstruction project will be reopened both eastbound and westbound; once traffic is switched.  Shoulder work and final striping will be completed in spring 2023.

Work on the 15-mile Interstate reconstruction project included recycling the existing surfacing, placement of 11 ½ inches of new concrete surfacing with asphalt shoulders, reconstruction of two bridges, rehabilitation of two additional bridges, replacement of culverts, and regrading of low-lying areas.


December 1, 2022