Authorities say both lanes of U.S. Highway 20 north of Mountain Home have reopened following a mudslide.
Authorities tell KTVB-TV that mud on Thursday closed one lane of the route that carries traffic from Boise to the central Idaho resort area of Ketchum and Sun Valley.
The mudslide occurred between Cow Creek Road and Anderson Ranch Dam Road.
Elmore County dispatchers say one person had to be rescued after a rainstorm on Thursday caused rocks and mud to slide onto roadways.
Authorities say some roads in the area remain closed. Those include Anderson Ranch Dam Road, Cow Creek Road, Fall Creek Road, Granite Creek Road and Prairie Road to Davison Ranch.
August wildfires might have led to the mudslides.