UPDATE
HAMILTON - US Highway 93 in the southern Bitterroot reopened to traffic on Monday evening after being closed for several hours.
Original Report
A section of US Highway 93 is closed in the southern reaches of the Bitterroot.
The Ravalli County Sheriff's Office reports the road will be closed between mile marker 5 and mile marker 9 "for a short period."
Drivers should expect delays in the area.
The Montana Department of Transportation (MDT) reports the road is closed due to a propane truck leak
MDT also states the area is being evacuated and no detour is available.
The latest Montana road conditions can be here.