Montana Highway 200 mastic patching near Potomac

POTOMAC and GREENOUGH, Mont.- The Montana Department of Transportation will complete mastic patching on Montana Highway 200, scheduled to begin on Thursday, October 12. Work is anticipated to last for approximately two days, weather and other factors permitting. Mastic is used to patch, seal or fill gaps on the roadway surface. The purpose of this maintenance project is to extend the service life...