Idaho State Highway 21 is expected to close on Saturday, February 22, 2025, due to avalanche risk. Idaho Department of Transportation Provided Idaho Highway 21 is expected to close at 5 p.m. Saturday, ...
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 ...