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 Holmes Avenue (Idaho Falls) and ID 31 (Swan Valley). Road construction work is in progress. 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. Until September 12. Between Industrial Lane and Poleline Road (Pocatello). The roadway is reduced to one lane. Road construction work is in progress. There is a width limit in effect. Night time construction work is in progress. Width limit 12'0". From 7:00PM MDT to 7:00AM MDT on weekdays. Until September 15. Between I-184 and Fourth Street (near Boise). The roadway is reduced to three lanes. Until March 31, 2017. Between West Magic Road and US 20 (7 to 17 miles south of the Bellevue area). Look out for construction work. The road is being repaved. Bridge maintenance work is in progress. The roadway is reduced to one lane. There are alternating lane closures. Expect delays. Look out for temporary traffic lights. There is a width limit in effect. Expect 10 - minute delays. Width limit 12'0". From 8:00AM MDT to 7:00PM MDT on weekdays and Saturdays. Until August 31. Between Lucky Peak Dam Road and Robie Creek Road (3 to 8 miles north of the Boise area). Look out for a brush fire. Visibility is reduced. Between Third Street and Center Lane - Bischoff Road (12 miles north of the Montpelier area). The roadway is reduced to one lane. The road is being repaved. Look out for loose gravel on the roadway. A seal coat treatment has been applied. Consider using an alternate route. Speed restrictions are in force. There is a width limit in effect. Speed limit 45 MPH. Width limit 14'0". From 8:00AM MDT to 8:00PM MDT on weekdays and Saturdays. Until July 30. Between East 4 Lane; West 4 Lane and Barker Lane (1 to 2 miles south of the Donnelly area). Bridge construction work is in progress. Expect delays. Look out for flaggers. Expect 10 - minute delays. From 7:00AM MDT to 6:00PM MDT daily. Until October 21. 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 November 1. Between Exit 211: US 30; ID 24 and Exit 222: I-86 (5 to 6 miles east of the Heyburn area). Look out for long term road construction work due to bridge construction work. The roadway is reduced to two lanes. Speed restrictions are in force. There is a width limit in effect. Drive with extreme caution. Speed limit 65 MPH. Width limit 12'0". Until June 2, 2017. 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 one lane. 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 Smith's Ferry Drive - High Valley Road and Kerby Street (11 miles south of the Cascade area). Utility work is in progress. The roadway is reduced to one lane. Look out for flaggers. Short delays are possible. From 12:00PM MDT to 5:00PM MDT on Mondays and from 7:00AM MDT to 5:00PM MDT on Tuesdays, Wednesdays and Thursdays. Until Wednesday, at about 5:00PM MDT. Between 2775 North Road (4 miles west of the Island Park area) and Sawtelle Road (Island Park). Road construction work is in progress. The road is being repaved. Look out for flaggers. Traffic is being held. Expect delays. There is a width limit in effect. Speed restrictions are in force. Width limit 14'0". From 7:00AM MDT to 8:00PM MDT on Mondays, Tuesdays, Wednesdays and Thursdays. Until September 15. Between Exit 3: Woodruff Road (9 miles south of the Malad City area) and Exit 22: Colton Lane (5 miles north of the Malad City area). The roadway is reduced to one lane. There are alternating lane closures. The road is being repaved. A pilot car is in operation. Look out for flaggers. Speed restrictions are in force. There is a width limit in effect. Speed limit 65 MPH. Width limit 12'0". From 7:00AM MDT to 7:00PM MDT on weekdays and Saturdays. Until July 31. Between 2000 South Road; Plano Road and 5500 West Road (3 to 4 miles west of the Rexburg area). Look out for construction work. Bridge maintenance work is in progress. Look out for temporary traffic lights. Expect single line traffic alternating directions. From 7:00AM MDT to 8:00PM MDT on weekdays and Saturdays. Until November 18. 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 Exit 31: ID 40; Downey Road and Exit 40: Arimo Road (2 to 7 miles south of the Arimo area). The roadway is reduced to one lane. Road construction work is in progress. The road is being repaved. Bridge maintenance work is in progress. There is work on the shoulder. People are working in the median. Speed restrictions are in force. There is a width limit in effect. Speed limit 70 MPH. Width limit 12'0". Until November 1. Between Exit 72: I-86 and Exit 89: US 91; Interstate 15 Business (near Fort Hall). The roadway is reduced to one lane. Road construction work is in progress. The road is being repaved. Bridge maintenance work is in progress. There is work on the shoulder. People are working in the median. Speed restrictions are in force. There is a width limit in effect. Speed limit 70 MPH. Width limit 12'0". Until November 1. Between Exit 93: US 26 and The Blackfoot Rest Area (3 miles north of the Blackfoot area). The roadway is reduced to one lane. Road construction work is in progress. The road is being repaved. Bridge maintenance work is in progress. People are working in the median. Speed restrictions are in force. There is a width limit in effect. Width limit 14'0". Speed limit 65 MPH. Until November 1. Between Exit 254: Sweetzer Road and Sweetzer Summit (43 to 45 miles east of the Heyburn area). People are working in the median. The roadway is reduced to one lane. The left lane is closed. Speed restrictions are in force. Speed limit 65 MPH. Until September 7. 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 9. Between Exit 143: ID 33 (4 miles south of the Hamer area) and Exit 172: Sheep Station Road (near Dubois). Road construction work is in progress. A seal coat treatment has been applied. Speed restrictions are in force. There are alternating lane closures. Width limit 14'0". From 9:00AM MDT to 8:00PM MDT on weekdays and Saturdays. Until August 12. 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 Exit 108: River Road and Exit 128: Osgood Road (3 miles south of the Idaho Falls area). Road construction work is in progress. A seal coat treatment has been applied. Night time construction work is in progress. Speed restrictions are in force. There are alternating lane closures. Width limit 14'0". Until August 19. 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 Exit 57: Interstate 15 Business (Inkom) and Exit 63: Portneuf Road (2 miles north of the Inkom area). The roadway is reduced to one lane. Road construction work is in progress. There is work on the shoulder. People are working in the median. Speed restrictions are in force. Speed limit 70 MPH. Width limit 12'0". From 7:00AM MDT to 5:30PM MDT on weekdays. Until August 2. Between Pahsimeroi Road (15 miles north of the Challis area) and The Montana State Line (44 miles north of the Salmon area). Road construction work is in progress. A seal coat treatment has been applied. Look out for loose gravel on the roadway. A pilot car is in operation. Look out for flaggers. Traffic is being held. Expect delays. Until August 1.
ID 31: Pine Creek Pass
ID 36: Emigration Pass
ID 87: Reynolds Pass
US 93: Willow Creek Summit
US 89: Geneva Summit
I-15: Malad Summit
ID 21: Beaver Creek Summit
I-15: Monida Pass
ID 28: Gilmore Summit
ID 21: Banner Creek Summit
ID 29: Bannock Pass
US 30: Border Summit
ID 38: Holbrook Summit
ID 75: Galena Summit
US 20: Targee Pass
I-84: Sweetzer Summit
ID 21: Highland Valley Summit
ID 33: Teton Pass
ID 21: Mores Creek Summit
US 30: Georgetown Summit
US 93: Nevada Line Pass
US 20: Cat Creek Summit
US 30: Fish Creek Summit
Google Static Map Image
Mountain Pass Mountain Pass