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—Southeast Idaho
Map of Southeast Idaho Between Ford Street and Malm Gulch Road (2 to 3 miles north of the Clayton area). There is work on the shoulder. Until November 28. 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 17. Between North River Road and Wood Road (4 to 7 miles east of the Ashton area). Road construction work is in progress. The roadway is reduced to one lane. Expect delays. Speed restrictions are in force. There is a width limit in effect. Look out for flaggers. Expect 30 - minute delays. Speed limit 45 MPH. Width limit 11'0". Until October 9. Between Exit 346: Bridge Street and US Route 20 Business; 2600 East Road (1 mile east of the St. Anthony area). The intersecting road is closed because the bridge is closed. A detour is in operation. Until October 1. 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 Timber Way and Elkhorn Road; River Ranch Road (2 miles south of the Sun Valley area). Road construction work is in progress. The roadway is reduced to two lanes. The road is being repaved. Observe speed limits. Expect delays. Look out for flaggers. There is a width limit in effect. Drive with extreme caution. Expect 15 - minute delays. Speed limit 35 MPH. Width limit 16'0". Until September 26. Between Redfish Lake Road (Stanley) and Squaw Creek Road (5 miles south of the Clayton area). There is danger of a rock fall. Between Poplar Road (5 miles east of the Ririe area) and The Wyoming State Line (16 miles east of the Irwin area). Watch for deer on the roadway. Drive with extreme caution. Between Exit 137 and Exit 141: I-84B; US 26 (near Bliss). Bridge maintenance work is in progress. The roadway is reduced to one lane. Speed restrictions are in force. There is a width limit in effect. Speed limit 65 MPH. Width limit 13'0". Until September 26. Between Banks Valley Road and Pegram Road (6 to 11 miles east of the Montpelier area). The roadway is reduced to one lane. Road construction work is in progress. The road is being repaved. Expect delays. Look out for flaggers. Consider using an alternate route. Speed restrictions are in force. There is a width limit in effect. Truck restrictions are in force. If weather permits. Speed limit 55 MPH. Width limit 12'0". Expect 15 - minute delays. Until September 30. Between Read Avenue and Meridian Road and 100 North Road (near Rupert). Road maintenance work is in progress. The road is being repaved. The roadway is reduced to one lane. Look out for flaggers. Expect delays. Consider using an alternate route. Until September 16. Between 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 Jefferson Street (near Montpelier) and Dingle Road - Keetch Road (3 miles east of the Montpelier area). The roadway is reduced to one lane. Road construction work is in progress. The road is being repaved. Speed restrictions are in force. There is a width limit in effect. Look out for flaggers. Expect delays. Consider using an alternate route. If weather permits. Speed limit 55 MPH. Width limit 17'0". From 7:00AM MDT to 7:00PM MDT daily. Until September 13. Between Exit 332: South Rexburg and Exit 337: Salem Road (near Rexburg). Road construction work is in progress. The roadway is reduced to one lane. Speed restrictions are in force. There is a width limit in effect. Speed limit 55 MPH. Width limit 14'0". Until September 11. Between US 20; US 91 and Exit 128: Osgood Road (near Idaho Falls). The exit ramp is closed due to road construction work. The right lane is closed. Right merging lanes. Follow the detour signs. There is a width limit in effect. Width limit 14'0". Until September 16. Between ID 33 and Van Buren Boulevard (5 to 8 miles east of the Butte City area). Look out for large animals on the roadway. Drive with extreme caution. Between US Route 26 Business (near Ririe) and Bear Creek Road (2 miles east of the Irwin area). Look out for mobile maintenance operations. Until August 6, 2015. Between US 20 and Montana State Line (3 miles north of the Island Park area). Utility work is in progress. 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 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. Between Main Street and Mores Creek Summit (11 miles north of the Idaho City area). Road construction work is in progress. The roadway is reduced to one lane. Look out for loose gravel on the roadway. Look out for flaggers. A pilot car is in operation. Expect delays. Speed restrictions are in force. There is a width limit in effect. Width limit 12'0". Speed limit 35 MPH. Expect 15 - minute delays. Until September 10. Between Highland Valley Summit and Daggett Grade Road (8 to 13 miles north of the Boise area). Road construction work is in progress. There is work on the shoulder. The roadway is reduced to one lane. Expect delays. Look out for flaggers. Expect 5 - minute delays. From 7:00AM MDT to 12:00PM MDT on Fridays and from 7:00AM MDT to 7:00PM MDT on Mondays, Tuesdays, Wednesdays and Thursdays. Until October 3.
ID 38: Holbrook Summit
ID 33: Teton Pass
US 89: Geneva Summit
ID 29: Bannock Pass
I-15: Monida Pass
ID 36: Emigration Pass
ID 21: Beaver Creek Summit
ID 21: Mores Creek Summit
ID 87: Reynolds Pass
ID 28: Gilmore Summit
US 30: Georgetown Summit
US 20: Targee Pass
ID 21: Highland Valley Summit
US 93: Willow Creek Summit
US 30: Border Summit
US 20: Cat Creek Summit
ID 21: Banner Creek Summit
US 30: Fish Creek Summit
I-84: Sweetzer Summit
US 93: Nevada Line Pass
ID 31: Pine Creek Pass
ID 75: Galena Summit
I-15: Malad Summit
Google Static Map Image
Mountain Pass Mountain Pass