Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 14 reports
Parma to Boise 2 reports
Mountain Home to Arco 8 reports
Arco to Idaho Falls 2 reports
Idaho Falls to Montana 4 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 15th Street (Boise). The road is wet. Expect rain. Between I-84; ID 51 (Mountain Home) and Cat Creek Summit (26 miles west of the Fairfield area). The road is wet. Be prepared for light snow. Look out for large animals on the roadway. Between Cat Creek Summit (26 miles west of the Fairfield area) and First Street West (Fairfield). Look out for snow on the roadway. Be prepared for light snow. Between First Street West (Fairfield) and ID 75 (17 miles west of the Carey area). Look out for slush on the roadway. The road is wet. Be prepared for light snow. Between ID 75 (17 miles west of the Carey area) and US 26 (Carey). The road is wet. Look out for a mix of rain and snow. Be ready for dense fog. Between US 26 (Carey) and Blizzard Mountain Road (18 miles west of the Arco area). Look out for icy patches. The road is wet. Be prepared for light snow. Be ready for dense fog. Between Lava Lake Road (18 miles west of the Arco area) and I-15; US 91 (Idaho Falls). The road is wet. Cloudy skies. Between I-15 (Idaho Falls) and The South Ashton City Limits (6 miles west of the Ashton area). The road is wet. Cloudy skies. Between The South Ashton City Limits (6 miles west of the Ashton area) and Harriman State Park (2 miles west of the Island Park area). Look out for slush on the roadway. The road is wet. Look out for a mix of rain and snow. Be ready for dense fog. 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). The road is wet. Look out for a mix of rain and snow. Be ready for patchy fog. Between Camp Creek Road (12 miles east of the Fairfield area) and Cutoff Road (5 miles west of the Carey area). A Winter Storm Warning is in effect. Until Monday, at about 5:00AM MST. Between Blizzard Mountain Road (13 miles west of the Arco area) and The Truck Scale Port of Entry (near Butte City). A Winter Storm Warning is in effect. Until Monday, at about 5:00AM MST. Between The North Fork Teton River Bridge (near Sugar City) and The Montana State Line (3 miles east of the Island Park area). A Winter Storm Warning is in effect. Until Monday, at about 5:00AM MST.
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