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Mountain Passes
I‑15 ID 55 ID 75 I‑84 I‑90 US 93 US 95
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Mountain Passes—Statewide
Map of Statewide Between Exit 180: Spenser Road and Exit 190: Humphrey Road (2 miles north of the Spencer area). Watch for deer on the roadway. Drive with extreme caution. Between Exit 173: US 93 (9 miles west of the Hazelton area) and Exit 201: ID 25; Kasota Road (5 miles east of the Hazelton area). Major road construction work is in progress. The road is being repaved. Speed restrictions are in force. Ramp restrictions are in force. There is a width limit in effect. The roadway is reduced to one lane. Speed limit 70 MPH. Width limit 14'0". Until November 2, 2018 at about 7:00PM MDT. Between Thompson Creek Road (5 miles south of the Clayton area) and US 93 (20 miles north of the Clayton area). There is danger of a rock fall. Drive with extreme caution. Between Exit 36: US 91; Hawkins Road (3 miles south of the Arimo area) and Exit 57: Interstate 15 Business (near Inkom). 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. Expect delays. Speed restrictions are in force. There is a width limit in effect. Speed limit 65 MPH. Width limit 12'5". Until October 15, 2018 at about 6:00PM MDT. Between The Warm Springs Pack Bridge and Lolo Pass Rest Area (75 to 98 miles east of the Kooskia area). The road is being repaved. The roadway is reduced to one lane. Expect delays. A pilot car is in operation. Look out for flaggers. Speed restrictions are in force. Speed limit 35 MPH. Until October 31, 2018 at about 11:59PM PDT. Between Pete King Creek Road and The Colgate Licks Rest Area (38 to 64 miles east of the Kooskia area). The road is being repaved. The roadway is reduced to one lane. Expect delays. Consider using an alternate route. A pilot car is in operation. Look out for flaggers. Speed restrictions are in force. Width limit 12'0". Speed limit 25 MPH. Until October 31, 2018 at about 6:00AM PDT. Between Redfish Lake Road (near Stanley) and Squaw Creek Road (5 miles south of the Clayton area). There is danger of a rock fall. Drive with extreme caution. Between Peek Rock Road and Rock Spur Road (21 to 25 miles south of the Homedale area). The road is slippery due to swarms of insects. For motorcycles. Drive with extreme caution. Between Challis Avenue; Sunset Street (Arco) and Spar 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 Redfish Lake Road (near Stanley) and Squaw Creek Road (5 miles south of the Clayton area). Look out for large animals on the roadway. Between 1475 North Road (1 mile east of the Ashton area) and ID 87 (near Island Park). Watch for deer on the roadway. Drive with extreme caution.
US 89: Geneva Summit
US 93: Willow Creek Summit
I-90: Fourth of July Pass
US 93: Lost Trail Pass
I-90: Lookout Pass
ID 21: Mores Creek Summit
US 12: Lolo Pass
US 95: Midvale Hill Summit
ID 36: Emigration Pass
US 20: Targee Pass
US 30: Border Summit
ID 38: Holbrook Summit
ID 21: Beaver Creek Summit
ID 71: Brownlee Summit
ID 21: Banner Creek Summit
ID 29: Bannock Pass
ID 28: Gilmore Summit
US 95: Lewiston Hill Summit
US 93: Nevada Line Pass
I-15: Monida Pass
ID 31: Pine Creek Pass
I-84: Sweetzer Summit
ID 87: Reynolds Pass
ID 75: Galena Summit
ID 21: Highland Valley Summit
US 20: Cat Creek Summit
ID 33: Teton Pass
US 95: White Bird Hill Summit
ID 55: Horseshoe Bend Hill Summit
US 30: Georgetown Summit
US 30: Fish Creek Summit
I-15: Malad Summit
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Mountain Pass Mountain Pass