Idaho Transportation Department officials have closed a 12-mile stretch of State Highway 21 in central Idaho due to potential avalanches.
The agency closed the road Friday morning from Grandjean Junction to Banner Summit.
Officials say it's unclear when it will reopen.
That section of road is known as Avalanche Alley because it has about 60 avalanche chutes and 90 percent of the avalanches causing problems on Idaho roads.