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 ID 21 (near Boise) and Exit 90: I-84B (7 miles west of the Mountain Home area). Look out for a slow moving maintenance vehicle because of work on the shoulder. For the next day. Between The Utah State Line (12 miles south of the Malad City area) and Exit 31: ID 40; Downey Road (11 miles south of the Arimo area). Look out for mobile maintenance operations. From 7:00AM MDT to 5:30PM MDT on weekdays. Between Robinson Bar Road (14 miles north of the Stanley area) and Slate Creek Road (15 miles south of the Clayton area). The roadway is reduced to one lane. There is work on the shoulder. Expect delays. Look out for flaggers. There is a width limit in effect. Expect 15 - minute delays. Width limit 12'0". Until Friday, at about 7:00PM MDT. Between Exit 13: ID 38; State Highway 38 (near Malad City) and Exit 31: ID 40; Downey Road (11 miles south of the Arimo area). Look out for mobile maintenance operations. People are working in the median. There is work on the shoulder. Look out for flaggers. From 5:30AM MDT to 4:00PM MDT on Monday, Tuesday and Thursday. Until tomorrow at about 4:00PM MDT. Between Exit 13: ID 38; State Highway 38 (near Malad City) and Exit 31: ID 40; Downey Road (11 miles south of the Arimo area). Look out for mobile maintenance operations. People are working in the median. There is work on the shoulder. Look out for flaggers. From 5:30AM MDT to 4:00PM MDT on Monday, Tuesday and Thursday. Until tomorrow at about 4:00PM MDT. Between Exit 13: ID 38; State Highway 38 (near Malad City) and Exit 31: ID 40; Downey Road (11 miles south of the Arimo area). Look out for mobile maintenance operations. People are working in the median. There is work on the shoulder. Look out for flaggers. From 5:30AM MDT to 4:00PM MDT on Monday, Tuesday and Thursday. Until tomorrow at about 4:00PM MDT. Between I-15; Devil Creek Road (near Malad City) and The East Holbrook City Limits (22 miles east of Malad City). Look out for mobile maintenance operations. There is work on the shoulder. People are working in the median. Look out for flaggers. From 5:30AM MDT to 4:00PM MDT on Monday, Tuesday and Thursday. Until tomorrow at about 4:00PM MDT. Between Exit 58: US 30 and Exit 63 (near Pocatello). The roadway is reduced to one lane. There are alternating lane closures. Bridge construction work is in progress. There is work on the shoulder. People are working in the median. Speed restrictions are in force. Look out for flaggers. Drive with extreme caution. Truck restrictions are in force. The ramp is partially blocked. Speed limit 60 MPH. Until November 1. Between US 20 and Eight Mile Canyon Road (37 to 42 miles west of the Mud Lake area). Look out for animals on the roadway. Between Exit 80: Fort Hall (Fort Hall) and Exit 93: US 26 (1 mile south of the Blackfoot area). The roadway is reduced to one lane. There are alternating lane closures. Look out for mobile maintenance operations. Road maintenance work is in progress. There is work on the shoulder. If weather permits. From 7:30AM MDT to 3:00PM MDT on Monday, Tuesday, Wednesday and Thursday. Until tomorrow at about 3:00PM MDT. Between 4400 North Road and Treasureton Road (6 to 11 miles east of Preston). The roadway is reduced to one lane. Look out for mobile maintenance operations. Road maintenance work is in progress. Look out for flaggers. If weather permits. From 7:00AM MDT to 5:00PM MDT on Monday, Tuesday, Wednesday and Thursday. Until today at about 5:00PM MDT. Between The South Saint Charles Creek Bridge and Michaelson Road (near St. Charles). The roadway is reduced to one lane. Expect delays. Road construction work is in progress. Bridge construction work is in progress. There is work on the shoulder. Look out for flaggers. Consider using an alternate route. Speed restrictions are in force. There is a width limit in effect. Observe the signals. Expect 15 - minute delays. Speed limit 25 MPH. Width limit 12'0". From 7:00AM MDT to 5:00PM MDT on weekdays. Until November 1. Between The West Lava Hot Springs City Limits and Fish Creek Summit (3 miles east of the Lava Hot Springs area). The roadway is reduced to one lane. A lane is closed intermittently. Road construction work is in progress. The road is being repaved. Speed restrictions are in force. There is a width limit in effect. Speed limit 45 MPH. Width limit 12'0". Until July 15.
I-90: Fourth of July Pass
I-90: Lookout Pass
US 30: Georgetown Summit
US 12: Lolo Pass
US 95: Lewiston Hill Summit
ID 33: Teton Pass
US 20: Targee Pass
ID 21: Mores Creek Summit
US 95: Midvale Hill Summit
US 89: Geneva Summit
ID 36: Emigration Pass
US 20: Cat Creek Summit
ID 28: Gilmore Summit
ID 21: Banner Creek Summit
I-84: Sweetzer Summit
US 93: Nevada Line Pass
I-15: Monida Pass
ID 38: Holbrook Summit
US 30: Border Summit
ID 31: Pine Creek Pass
I-15: Malad Summit
US 93: Willow Creek Summit
ID 29: Bannock Pass
US 93: Lost Trail Pass
ID 71: Brownlee Summit
ID 75: Galena Summit
US 30: Fish Creek Summit
US 95: White Bird Hill Summit
ID 55: Horseshoe Bend Hill Summit
ID 87: Reynolds Pass
ID 21: Highland Valley Summit
ID 21: Beaver Creek Summit
Google Static Map Image
Mountain Pass Mountain Pass