Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 13 reports
Parma to Boise 3 reports
Mountain Home to Arco 5 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. Be ready for patchy fog. Between I-84 (Caldwell) and ID 16 (3 miles west of the Eagle area). The road is wet. Expect rain. Be ready for patchy fog. Between ID 16 (3 miles west of the Eagle area) and I-184 (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). Look out for slush on the roadway. The road is wet. Look out for a mix of rain and snow. 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 ID 46 (16 miles west of the Carey area). Expect dry pavements. Cloudy skies. Between The Timmerman Rest Area (16 miles west of the Carey area) and US 26 (Carey). The road is wet. Cloudy skies. Be ready for patchy fog. Between US 26 and Blizzard Mountain Road (15 miles east of the Carey area). Look out for slush on the roadway. The road is wet. Cloudy skies. Be ready for dense fog. Between Lava Lake Road (15 miles east of the Carey area) and Van Buren Boulevard (13 miles east of the Butte City area). Look out for slush on the roadway. The road is wet. Be prepared for light snow. Between Van Buren Boulevard (13 miles east of the Butte City area) and I-15; US 91 (Idaho Falls). The road is wet. Expect rain. Between Van Buren Boulevard and Argon National Engineering Lab Road (18 to 23 miles east of the Butte City area). The road is closed to traffic. Starting February 22, 2017 at 2:00AM MST until February 22, 2017 at about 2:45AM MST. Between I-15 (Idaho Falls) and Burton Road (2 miles west of the Rexburg area). The road is wet. Expect rain. Between 4300 West Road (2 miles west of the Rexburg area) 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. Cloudy skies. Be ready for patchy 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). Look out for snow on the roadway. Be prepared for snow.
US 20: Road closed to traffic.
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Closure Closure
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Weather warning legend Weather Warning