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 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. Speed limit 55 MPH. 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. There is work on the shoulder. People are working in the median. Speed restrictions are in force. Speed limit 55 MPH. Width limit 14'0". From 8:00PM MDT to 5:00AM MDT daily. Until December 1, 2015. Between The Start of Highway 7 (4 miles south of the Orofino area) and US 12 (near Orofino). Road construction work is in progress. The roadway is reduced to one lane. Expect delays. Look out for flaggers. Expect 900 - minute delays. From 6:00AM PDT to 6:00PM PDT on weekdays. Until May 19. Between Cleveland Road (17 miles west of Grace) and Rich Road (1 mile east of the Grace area). The roadway is reduced to one lane. Road construction work is in progress. Bridge construction work is in progress. Expect delays. Look out for flaggers. Consider using an alternate route. There is a width limit in effect. Observe the signals. Truck restrictions are in force. Expect 900 - minute delays. Width limit 11'0". From 7:00AM MDT to 5:00PM MDT on weekdays. Until August 13. Between Antelope Flat Road (2 miles west of the Swan Valley area) and Indian Creek Road (12 miles east of the Irwin area). Look out for mobile maintenance operations. For the next week. Between Grove Avenue and Granite-Kelso Cut-Off Road (1 mile north of the Athol area). The roadway is reduced to one lane because of major road construction work. Look out for trucks entering the roadway. Speed restrictions are in force. Speed limit 45 MPH. Between Star Road and Black Cat Road (1 to 2 miles east of the Star area). Road construction work is in progress. There is work on the shoulder. Speed restrictions are in force. There is a width limit in effect. Speed limit 45 MPH. Width limit 10'0". Until August 14. Between Exit 29: US 20; Franklin Road (near Nampa) and Exit 44: ID 69 (near Meridian). Traffic is stop and go. Between The Boise Port of Entry and Exit 71: Mayfield Road (8 to 10 miles east of the Boise area). Road maintenance work is in progress. People are working in the median. The roadway is reduced to one lane. Speed restrictions are in force. Speed limit 65 MPH. From 6:30AM MDT to 6:30PM MDT on weekdays. Until May 30.
US 89: Geneva Summit
ID 21: Banner Creek Summit
US 95: White Bird Hill Summit
I-90: Lookout Pass
ID 29: Bannock Pass
ID 71: Brownlee Summit
ID 75: Galena Summit
US 30: Border Summit
ID 33: Teton Pass
I-15: Malad Summit
I-90: Fourth of July Pass
US 95: Lewiston Hill Summit
US 93: Lost Trail Pass
ID 55: Horseshoe Bend Hill Summit
US 93: Willow Creek Summit
US 30: Fish Creek Summit
I-84: Sweetzer Summit
ID 21: Beaver Creek Summit
ID 21: Highland Valley Summit
ID 87: Reynolds Pass
ID 38: Holbrook Summit
US 93: Nevada Line Pass
US 30: Georgetown Summit
ID 36: Emigration Pass
US 20: Cat Creek Summit
ID 28: Gilmore Summit
US 20: Targee Pass
US 95: Midvale Hill Summit
ID 31: Pine Creek Pass
ID 21: Mores Creek Summit
US 12: Lolo Pass
I-15: Monida Pass
Google Static Map Image
Mountain Pass Mountain Pass