Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 5 reports
Parma to Boise No reports
Mountain Home to Arco 3 reports
Arco to Idaho Falls No reports
Idaho Falls to Montana 2 reports
Reports on US 20
Map of Reports on US 20 Between I-84; ID 51 (Mountain Home) and Cat Creek Summit (26 miles west of the Fairfield area). The road is wet. Expect rain. Look out for large animals on the roadway. There is danger of a rock fall. Between Cat Creek Summit (26 miles west of the Fairfield area) and First Street West (Fairfield). Expect dry pavements. Cloudy skies. Between First Street West (Fairfield) and ID 75 (17 miles west of the Carey area). The road is wet. Look out for a mix of rain and snow. 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). The road is wet. Be prepared for light snow. Look out for large animals on the roadway. 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. Be prepared for light snow. Look out for drifting snow on the roadway.
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