Temporary Ramp Closure Expected Sunday

May 29, 2026 - The North Dakota Department of Transportation is announcing a temporary closure that is expected overnight on Interstate 94 Exit 155 westbound ramp in Mandan starting Sunday, May 31. (This is the I-94 Westbound exit onto Main Street entering Mandan).  

Maintenance work is scheduled overnight from 7 p.m. to 6 a.m. Motorists should use alternate routes during this time.  

If additional time is needed, work may continue Monday, June 1 during the same overnight hours.