Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Highways with Mountain Passes
US 12 1 mountain pass
I-15 2 mountain passes
US 20 2 mountain passes
ID 21 4 mountain passes
ID 28 1 mountain pass
ID 29 1 mountain pass
US 30 3 mountain passes
ID 31 1 mountain pass
ID 33 1 mountain pass
ID 36 1 mountain pass
ID 38 1 mountain pass
ID 55 1 mountain pass
ID 71 1 mountain pass
ID 75 1 mountain pass
I-84 1 mountain pass
ID 87 1 mountain pass
US 89 1 mountain pass
I-90 2 mountain passes
US 93 3 mountain passes
US 95 3 mountain passes
Mountain Passes—Statewide
Map of Statewide Between Newsome Creek Road and Red River Road. The road is closed because of a landslide. Look out for flaggers. From 7:00AM PDT to 12:00PM PDT and from 1:00PM PDT to 5:30PM PDT on weekdays. Between Challis Avenue; Sunset Street (Arco) and Spur Canyon Road (21 miles south of the Challis area). Watch for deer on the roadway. Look out for large animals on the roadway. Drive with extreme caution. Between Gunnell Road (near Soda Springs) and Diamond Gulch Road (5 miles east of the Soda Springs area). The roadway is reduced to one lane. There are alternating lane closures. A lane is closed intermittently. Road construction work is in progress. The road is being repaved. Look out for loose gravel on the roadway. A seal coat treatment has been applied. There is work on the shoulder. Expect delays. A pilot car is in operation. Look out for flaggers. Consider using an alternate route. There is a width limit in effect. Expect 15 - minute delays. Width limit 14'0". From 3:00AM MDT to 7:00PM MDT on weekdays. Until September 20. Between Cox Road and Third Avenue North (2 miles north of the Payette area). Road maintenance work is in progress. The roadway is reduced to one lane. Look out for flaggers. Short delays are possible. From 9:30AM MDT to 3:30PM MDT on Monday, Tuesday, Wednesday and Thursday. Until tomorrow at about 3:30PM MDT. Between The Menan-Lorenzo Highway (3 miles east of the Rigby area) and ID 33 (Rexburg). Road construction work is in progress. The roadway is reduced to two lanes. Construction traffic may be merging. Speed restrictions are in force. There is a width limit in effect. Expect delays. Speed limit 55 MPH. Width limit 14'0". Expect 5 - minute delays. Until October 31. Between Long View Road (1 mile north of the McCall area) and Woodland Road (3 miles south of the New Meadows area). Road construction work is in progress. The roadway is reduced to one lane. Look out for flaggers. There is a width limit in effect. Expect delays. Speed limit 35 MPH. Width limit 12'0". Until July 30. Between Carr Road (6 miles north of the Weiser area) and Rainbow Road (10 miles south of the Riggins area). A seal coat treatment has been applied. Look out for loose gravel on the roadway. The roadway is reduced to one lane. A pilot car is in operation. Look out for flaggers. Speed restrictions are in force. Expect delays. Speed limit 35 MPH. From 7:00AM MDT to 7:00PM MDT on Monday, Tuesday, Wednesday and Thursday. Until tomorrow at about 7:00PM MDT. Between Broadway Run Road and Elkhorn Road; River Ranch Road (near Sun Valley). Look out for long term road construction work. Bridge construction work is in progress. The roadway is reduced to two lanes. Expect delays. Speed restrictions are in force. There is a width limit in effect. Speed limit 35 MPH. Width limit 14'0". Until September 15, 2017. Between Grangemont Road and South Headquarters City Limits - End of Highway 11 (3 to 11 miles north of the Pierce area). Road construction work is in progress. The roadway is reduced to one lane. Drive with extreme caution. Expect 15 - minute delays. Width limit 12'0". Until August 2. Between Exit 44: Ramsey Road (5 miles east of the American Falls area) and Exit 61: US 91 (near Arbon Valley). The roadway is reduced to one lane. There are alternating lane closures. Road construction work is in progress. The road is being repaved. Night time construction work is in progress. From 7:00PM MDT to 7:00AM MDT on weekdays. Until August 3. Between The Utah State Line (12 miles south of the Malad City area) and Exit 31: ID 40; Downey Road (10 miles south of the Arimo area). Look out for mobile maintenance operations. There is work on the shoulder. People are working in the median. From 7:00AM MDT to 4:30PM MDT on Mondays, Tuesdays, Wednesdays and Thursdays. Until tomorrow at about 4:30PM MDT. Between Redfish Lake Road (near Stanley) and Squaw Creek Road (5 miles south of the Clayton area). There is danger of a rock fall. Look out for large animals on the roadway. Between Avenue A and University Drive (near Boise). The road is closed to traffic due to bridge construction work. A detour is in operation. Until October 1. Between Riverside Road and Johnstone Road (near Homedale). Bridge construction work is in progress. The roadway is reduced to one lane. Observe the signals. Expect delays. Speed restrictions are in force. There is a width limit in effect. Expect 10 - minute delays. Width limit 12'0". Speed limit 25 MPH. Until July 14, 2017. Between The Cherry Creek Rest Area (3 miles south of the Malad City area) and Exit 22: Colton Lane (2 miles north of the Malad City area). Look out for mobile maintenance operations. The roadway is reduced to one lane. There are alternating lane closures. If weather permits. Until July 8.
ID 31: Pine Creek Pass
US 95: Lewiston Hill Summit
ID 36: Emigration Pass
ID 87: Reynolds Pass
US 93: Willow Creek Summit
US 95: White Bird Hill Summit
US 89: Geneva Summit
ID 55: Horseshoe Bend Hill Summit
I-15: Malad Summit
ID 21: Beaver Creek Summit
I-15: Monida Pass
US 12: Lolo Pass
ID 28: Gilmore Summit
ID 21: Banner Creek Summit
ID 29: Bannock Pass
US 30: Border Summit
US 93: Lost Trail Pass
ID 38: Holbrook Summit
ID 75: Galena Summit
US 20: Targee Pass
I-84: Sweetzer Summit
ID 21: Highland Valley Summit
I-90: Lookout Pass
ID 71: Brownlee Summit
ID 33: Teton Pass
ID 21: Mores Creek Summit
US 30: Georgetown Summit
I-90: Fourth of July Pass
US 95: Midvale Hill Summit
US 93: Nevada Line Pass
US 20: Cat Creek Summit
US 30: Fish Creek Summit
Google Static Map Image
Mountain Pass Mountain Pass