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Mountain Passes—Statewide
Map of Statewide Between Washington State Line and US 95. The roadway is reduced to one lane. Look out for flaggers. Drive with extreme caution. From 6:00AM PDT to 2:00PM PDT on Monday, Tuesday, Wednesday and Thursday. For the next two weeks. Between Blue Haven Lane and Prairie Creek Road (14 miles north of the Ketchum area). Look out for mobile maintenance operations. There are alternating lane closures. Look out for flaggers. Reduce your speed. From 7:00PM MDT to 5:30PM MDT on Monday, Tuesday, Wednesday and Thursday. Until August 28, 2019 at about 5:30PM MDT. Between Johnson Road and McKim Creek Road (19 miles north of the Challis area). There is danger of a rock fall. Drive with extreme caution. Between Thompson Creek Road (5 miles south of the Clayton area) and US 93 (20 miles north of the Clayton area). There is danger of a rock fall. Drive with extreme caution. Between Redfish Lake Road (near Stanley) and Squaw Creek Road (5 miles south of the Clayton area). There is danger of a rock fall. Drive with extreme caution. Between Robinson Bar Road (15 miles north of the Stanley area) and Slate Creek Road (15 miles south of the Clayton area). Road construction work is in progress. The roadway is reduced to one lane. Follow the signs. Look out for flaggers. Look out for temporary traffic lights. Reduce your speed. Width limit 14'0". From 7:30AM MDT to 12:30PM MDT on Friday and from 7:30AM MDT to 5:30PM MDT on Monday, Tuesday, Wednesday and Thursday. Until October 4, 2019 at about 5:30PM MDT. Between ID 33 and Argon National Engineering Lab Road (3 to 23 miles east of the Butte City area). Road maintenance work is in progress. Look out for a slow moving maintenance vehicle. There is work on the shoulder. Observe the signs. Follow the signs. Until August 31, 2019 at about 7:00PM MDT. Between Redfish Lake Road (near Stanley) and Squaw Creek Road (5 miles south of the Clayton area). Look out for large animals on the roadway. Between North River Road and 2050 North Road (1 to 4 miles east of the Ashton area). Major road construction work is in progress. Traffic is heavy. Traffic is backed up. Be aware of narrow lanes because a lane is closed. Speed limit 25 MPH. Width limit 12'0". From 7:00AM MDT to 7:00PM MDT on weekdays. Until September 19, 2019 at about 6:00PM MDT. Between Exit 119: US 20 and Exit 116: I-15B; Sunnyside Rd (Idaho Falls). There is work on the shoulder. The right lane is blocked. Drive with extreme caution.
ID 21: Banner Creek
ID 28: Gilmore
ID 21: Highland Valley
US 93: Lost Trail Pass
I-90: Fourth of July Pass
ID 38: Holbrook
ID 36: Emigration Pass
US 95: White Bird Hill
US 93: Nevada Line Pass
ID 87: Reynolds Pass
US 20: Targee Pass
ID 75: Galena
US 89: Geneva
I-15: Monida Pass
ID 21: Mores Creek
ID 21: Beaver Creek
ID 71: Brownlee
ID 29: Bannock Pass
US 95: Midvale Hill
US 30: Georgetown
US 12: Lolo Pass
ID 55: Horseshoe Bend Hill
ID 33: Teton Pass
I-90: Lookout Pass
US 30: Border
ID 31: Pine Creek Pass
US 30: Fish Creek
I-15: Malad
US 20: Cat Creek
I-84: Sweetzer
US 95: Lewiston Hill
US 93: Willow Creek
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Mountain Pass Mountain Pass