BRANDON — Beginning at 7 p.m. Aug. 27, the South Dakota Department of Transportation will temporarily close eastbound and westbound lanes on Interstate 90 and divert traffic through the on and off-ramps at exit 406 at Brandon. This traffic diversion will be maintained through the overnight until 7 a.m. Aug. 28. This traffic pattern switch is being scheduled to set bridge girders.

Lane closures and traffic diversions on I-90 at exit 406 at Brandon are also planned from 7 p.m. Aug. 28 through the overnight until 7 a.m. Aug. 29. This second night of the scheduled traffic diversion is to install components to build the bridge deck.

Traffic on state Highway 11 will be maintained during both overnight traffic diversions. Flaggers will be posted to guide Highway 11 traffic. Dates for the traffic diversions are weather dependent, and will be rescheduled as needed.

This project includes the reconstruction of exit 406 (Brandon) with added lighting, signals, and mainline interstate work. This project also includes three structure replacements. The interchange will be reconstructed as a diverging diamond interchange. Westbound I-90 lanes (along with the railroad structure on I-90) will be reconstructed in 2024 and the eastbound lanes in 2025. The interchange itself and new structure over I-90 will be reconstructed between the 2024 and 2025 construction season.