Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 8 reports
Parma to Boise 3 reports
Mountain Home to Arco 2 reports
Arco to Idaho Falls 1 report
Idaho Falls to Montana 3 reports
Reports on US 20
Map of Reports on US 20 Between US 95 (near Parma) and I-84 (near Caldwell). Expect dry pavements. Cloudy skies. Between I-84 (Caldwell) and I-184 (Boise). Expect dry pavements. Cloudy skies. Between Avenue A and University Drive (near Boise). The road is closed to traffic due to bridge construction work. A detour is in operation. Until October 1. Between I-84; ID 51 (Mountain Home) and Cat Creek Summit (26 miles west of the Fairfield area). Expect dry pavements. Weather conditions clear. Look out for large animals on the roadway. Between Cat Creek Summit (26 miles west of the Fairfield area) and I-15; US 91 (Idaho Falls). Expect dry pavements. Weather conditions clear. Between I-15 (Idaho Falls) and Burton Road (2 miles west of the Rexburg area). Expect dry pavements. Cloudy skies. Between 4300 West Road (2 miles west of the Rexburg area) and Harriman State Park (2 miles west of the Island Park area). Expect dry pavements. Weather conditions clear. Between Harriman State Park (2 miles west of the Island Park area) and The Montana State Line (3 miles east of the Island Park area). Look out for icy patches. Weather conditions clear.
US 20: Road closed to traffic, due to bridge construction work, detour in operation.
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