Avalanche-prone section of Idaho 21 reopens
The 12-mile stretch of Idaho 21 between the Grandjean Junction and Banner Summit reopened Thursday after being closed since the afternoon of Jan. 18 as a precaution for traveler's safety, the Idaho Transportation Department announced.
This marked the second closure of this section of road this winter. The recent closure was a precaution as heavy snowfall, strong winds and snowpack instability made the area susceptible to slides. Numerous avalanches did, in fact, fall on the highway.
The notorious "Avalanche Alley" section between the Grandjean Junction turnoff and Banner Summit is home to about 60 avalanche chutes and 90 percent of the avalanches in the state that affect highways.