A landslide blocked the West Fork Road and knocked out power Tuesday.
Ravalli County Emergency Director Eric Hoover said the county received a 911 call about the slide at about 1 p.m. Tuesday.
The slide blocked both lanes around mile marker 13.
Hoover was told the landslide severed a Ravalli Electric power line.
“Our road shop sent out a significant amount of personnel and equipment to remove the debris from the roadway,” he said at about 5 p.m. “I don’t have an estimate on when it will be completely opened.”
A sheriff’s report said that one lane was opened at about 6 p.m. Tuesday night.
While Hoover has seen some large rock slides in the area of Painted Rocks Reservoir, he’s not aware of any occurring in this area before.
“I’m sure that with the cold temperatures that we’ve been having, there has been a lot of freezing and warming going on that’s created some instability,” he said. “We have had some avalanche warnings out in various areas in the county. All of this rain is probably kicking some stuff loose that’s been compromised earlier.”