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 Deinhard Lane and Boydstun Street (McCall). The road is closed to traffic due to bridge construction work. A detour is in operation. Until November 20. Between Pine Creek Bench Road and Mike Spencer Canyon Road (3 miles east of the Swan Valley area). Bridge maintenance work is in progress. Expect delays. Expect single line traffic alternating directions. Width limit 12'0". Until October 31. Between Exit 25: ID 44 and Exit 28: 10th Street (near Caldwell). The road is blocked. Consider using an alternate route. Expect delays. Between US 95 (7 miles east of Lewiston) and Lolo Pass Rest Area (98 miles east of the Kooskia area). Look out for a wide load. Until today at about 8:00AM MDT. Between US 95 (7 miles east of Lewiston) and Lolo Pass Rest Area (98 miles east of the Kooskia area). Look out for a wide load. Until today at about 8:00AM MDT. Between US 12 (3 miles north of the Lapwai area) and Exit 312 (Lewiston). Look out for a wide load. Until today at about 8:00AM MDT. Between Exit 54: US 20; Broadway Avenue and Exit 60: The Isaacs Canyon Interchange (near Boise). Road construction work is in progress. Bridge construction work is in progress. There is work on the shoulder. People are working in the median. The roadway is reduced to one lane. Speed restrictions are in force. There is a width limit in effect. A detour is in operation. Speed limit 55 MPH. Width limit 12'0". Until October 1, 2015. Between Exit 52: Orchard Street and Exit 57: Gowen Road (near Boise). Road construction work is in progress. Bridge construction work is in progress. The roadway is reduced to one lane. Speed restrictions are in force. Speed limit 55 MPH. From 8:00PM MDT to 5:00AM MDT daily. Until December 1, 2015. Between Exit 150: Hamer Road and Exit 172: Sheep Station Road (2 miles north of the Dubois area). Look out for mobile maintenance operations. Until tomorrow at about 4:30PM MDT. Between US 30; Interstate 15 Business; Alameda Road and Flandro Drive (near Pocatello). The roadway is reduced to one lane. Night time construction work is in progress. Road construction work is in progress. Truck restrictions are in force. There is a width limit in effect. Look out for flaggers. Consider using an alternate route. A detour is in operation. The intersecting road is closed. Follow the detour signs. Width limit 12'0". Until November 2. Between 2000 South Road; Plano Road (4 miles west of the Rexburg area) and US 20 (Rexburg). Look out for mobile maintenance operations. Look out for flaggers. Expect single line traffic alternating directions. A pilot car is in operation. Until today at about 7:00PM MDT. Between Exit 52: The Arbon Valley Highway and Exit 58: US 30 (near Arbon Valley). The intersecting road is closed. The bridge is closed. The roadway is reduced to one lane. A lane is closed intermittently. There are alternating lane closures. Bridge maintenance work is in progress. A detour is in operation. Follow the detour signs. Speed restrictions are in force. Reduce your speed. There is a width limit in effect. Construction traffic may be merging. Drive with extreme caution. Speed limit 65 MPH. Width limit 14'0". From 7:00AM MDT to 7:00PM MDT daily. Until November 1. Between Robinson Bar Road (14 miles north of the Stanley area) and Slate Creek Road (15 miles south of the Clayton area). Major road construction work is in progress. The road is closed intermittently. The roadway is reduced to one lane. Expect delays. Look out for temporary traffic lights. Look out for flaggers. There is a width limit in effect. Expect 15 - minute delays. Width limit 12'0". From 7:00AM MDT to 7:00PM MDT on weekdays. Until October 31.
ID 55: Horseshoe Bend Hill Summit
I-15: Monida Pass
ID 36: Emigration Pass
I-90: Lookout Pass
US 30: Georgetown Summit
ID 31: Pine Creek Pass
ID 33: Teton Pass
ID 38: Holbrook Summit
US 93: Nevada Line Pass
US 95: Midvale Hill Summit
US 95: White Bird Hill Summit
US 30: Fish Creek Summit
ID 75: Galena Summit
ID 21: Banner Creek Summit
US 89: Geneva Summit
ID 21: Beaver Creek Summit
ID 29: Bannock Pass
US 20: Cat Creek Summit
US 93: Willow Creek Summit
US 12: Lolo Pass
I-84: Sweetzer Summit
US 93: Lost Trail Pass
ID 87: Reynolds Pass
ID 21: Mores Creek Summit
US 95: Lewiston Hill Summit
ID 28: Gilmore Summit
US 30: Border Summit
I-15: Malad Summit
ID 21: Highland Valley Summit
US 20: Targee Pass
I-90: Fourth of July Pass
ID 71: Brownlee Summit
Google Static Map Image
Mountain Pass Mountain Pass