Traffic will be down to one lane in both directions in downtown Bozeman Monday night.
The Montana Department of Transportation is closing the left lane in each direction to remove the snow berms.
Crews started at 7 p.m. moving snow away from the curbs to make room for the lane closures.
They are expected to start removing the snow in the center of the road around 10 tonight.
MDT said it will close the lanes one block at a time.