Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 15 reports
Parma to Boise 3 reports
Mountain Home to Arco 5 reports
Arco to Idaho Falls 3 reports
Idaho Falls to Montana 5 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). The road is wet. Cloudy skies. 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 Blizzard Mountain Road (18 miles west of the Arco area). The road is wet. Cloudy skies. Between Lava Lake Road (18 miles west of the Arco area) and US 93 (Arco). Look out for packed snow patches on the roadway. Be prepared for light snow. Look out for drifting snow on the roadway. Between US 93 (Arco) and Van Buren Boulevard (12 miles east of the Butte City area). The road is wet. Cloudy skies. Between ID 33 (12 miles east of the Butte City area) and I-15; US 91 (Idaho Falls). The road is wet. Cloudy skies. Be prepared for gusty winds. Between I-15 (Idaho Falls) and Thornton Road (2 miles west of the Rexburg area). The road is wet. Cloudy skies. Be prepared for gusty winds. Between Thornton Road (2 miles west of the Rexburg area) and The South Ashton City Limits (6 miles west of the Ashton area). Look out for slush on the roadway. 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). The road is wet. Cloudy skies. 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 slush on the roadway. The road is wet. Cloudy skies. Look out for drifting snow on the roadway. 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 today 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 today 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 today at about 5:00AM MST.
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