Idaho Highway 21 is expected to close at 5 p.m. Saturday, Feb. 22, because of a major avalanche risk, according to Idaho 511. The road will be closed from milepost 93.7 to milepost 105.5, from ...

The first phase of construction — between U.S. 20 and Idaho Highway 44 — was completed ... Find out more at the department’s detour map.) New Ada County freeway was supposed to handle ...

BOISE, Idaho – A large avalanche has closed a section of a central Idaho highway, and officials say the road will remain closed "until further notice" until the massive amounts of snow are ...

GRANDJEAN, Idaho — A section of Idaho State Highway 21 will close Saturday evening due to increasing avalanche danger. The closure, stretching from Grandjean to Banner Summit, takes effect on ...

BOISE, Idaho — State Highway 21 is closed in both directions between Grandjean and Banner Summit due to avalanche danger, the Idaho Transportation Department announced Friday. ITD said the ...

U.S. Highway 20 will be closed Wednesday from Anderson Dam Road to Hill City, according to the Idaho Transportation Department. Department crews will be working to remove built-up snow and ...