From Montana DOT construction page
https wrote:
US-2 - Mile Marker 299.8 to 308
Galata East and West between Shelby and Chester.
Reconstruction work in progress. Loads over 14-feet wide could experience substantial delays. Please consider an alternate route. Motorcycles and bicyclists should also consider an alternate route.
EXPECT: Reconstruction activities; Delays up to 15 minutes; Loose Gravel; Reduced Speeds of 35 MPH; Pilot Cars; Gravel Surface; Single Lane Traffic; Traffic Control by Signal Lights; Motorcycles Consider Alt Route.