Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Winter Road Conditions
US 20 Whole Road 9 reports
Parma to Boise 3 reports
Mountain Home to Arco 3 reports
Arco to Idaho Falls 1 report
Idaho Falls to Montana 3 reports
Reports on US 20
Map of Reports on US 20 Between US 95 (near Parma) and I-84 (near Caldwell). Expect dry pavements. Weather conditions clear. Between I-84 (Caldwell) and Franklin Road (3 miles west of the Star area). Expect dry pavements. Weather conditions clear. Between Franklin Road (3 miles west of the Star area) and 15th Street (Boise). Expect dry pavements. Weather conditions clear. Be prepared for gusty winds. Between I-84; ID 51 (Mountain Home) and Cat Creek Summit (26 miles west of the Fairfield area). Expect dry pavements. Weather conditions clear. Be prepared for gusty winds. Look out for large animals on the roadway. Between Cat Creek Summit (26 miles west of the Fairfield area) and Blizzard Mountain Road (18 miles west of the Arco area). Expect dry pavements. Cloudy skies. Between Lava Lake Road (18 miles west of the Arco area) and I-15; US 91 (Idaho Falls). Expect dry pavements. Weather conditions clear. Between I-15 (Idaho Falls) and Thornton Road (2 miles west of the Rexburg area). The road is wet. Weather conditions clear. Between Thornton Road (2 miles west of the Rexburg area) and Harriman State Park (2 miles west of the Island Park area). Expect dry pavements. Weather conditions clear. 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. Weather conditions clear.
Google Static Map Image
State conditions legend State
Closure Closure
Public conditions legend Public
Weather warning legend Weather Warning