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 ...

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 ...

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 ...