Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 10 reports
Parma to Boise 3 reports
Mountain Home to Arco 4 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). The road is wet. Expect rain. Between I-84 (Caldwell) and Franklin Road (3 miles west of the Star area). The road is wet. Expect rain. Between Franklin Road (3 miles west of the Star area) and 15th Street (Boise). Expect dry pavements. Cloudy skies. Between I-84; ID 51 (Mountain Home) and Cat Creek Summit (26 miles west of the Fairfield area). Expect dry pavements. Cloudy skies. Look out for large animals on the roadway. Between Cat Creek Summit (26 miles west of the Fairfield area) and ID 75 (17 miles west of the Carey area). Expect dry pavements. Cloudy skies. Between ID 75 (17 miles west of the Carey area) and Blizzard Mountain Road (18 miles west of the Arco area). Expect dry pavements. Cloudy skies. Be prepared for gusty winds. Between Lava Lake Road (18 miles west of the Arco area) and I-15; US 91 (Idaho Falls). Expect dry pavements. Weather conditions clear. Between I-15 (Idaho Falls) and Thornton Road (2 miles west of the Rexburg area). Expect dry pavements. Weather conditions clear. Look out for large animals on the roadway. Between Thornton Road (2 miles west of the Rexburg area) and The South Ashton City Limits (6 miles west of the Ashton area). Expect dry pavements. Cloudy skies. Between The South Ashton City Limits (6 miles west of the Ashton area) and The Montana State Line (3 miles east of the Island Park area). Expect dry pavements. Weather conditions clear.
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