Map of the lane reduction area.
Temporary Traffic Change on Memorial Highway
Aug. 19, 2025 —Memorial Highway in Mandan will be reduced to two lanes at 46th Ave SE beginning the evening of Tuesday, Aug. 19.
The lane reduction will allow crews to install new sanitary sewer and water main connections as part of the ongoing Memorial Highway reconstruction project. Work is expected to last about three weeks, depending on weather and field conditions.
Drivers should plan for additional delays at this intersection and are reminded to use caution and follow posted traffic control when traveling through the construction zone.
The NDDOT and City of Mandan appreciates the public’s patience as improvements continue on Memorial Highway. For project updates and more information, visit dot.nd.gov/memorialhwy.