Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 12 reports
Parma to Boise 2 reports
Mountain Home to Arco 6 reports
Arco to Idaho Falls 1 report
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. Cloudy skies. Be prepared for gusty winds. Between I-84 (Caldwell) and I-184 (Boise). The road is wet. Cloudy skies. Be prepared for gusty winds. 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. Be ready for patchy fog. 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). Look out for slush on the roadway. The road is wet. Be prepared for light snow. Between The Timmerman Rest Area (16 miles west of the Carey area) and Blizzard Mountain Road (15 miles east of the Carey area). The road is wet. Cloudy skies. Between Lava Lake Road (15 miles east of the Carey area) and US 93 (Arco). Look out for packed snow patches on the roadway. The road is wet. Be prepared for light snow. Between US 93 (Arco) and I-15; US 91 (Idaho Falls). Expect dry pavements. Cloudy skies. 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. Cloudy skies. 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. Expect dry pavements. 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). Look out for slush on the roadway. Look out for icy patches. Be prepared for light snow. 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. Cloudy skies. Between County Line Road; 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 tomorrow at about 3:00PM MST.
US 20: Road closed to traffic.
Google Static Map Image
State conditions legend State
Closure Closure
Public conditions legend Public
Weather warning legend Weather Warning