Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Mountain Passes—Statewide
Map of Statewide Between Exit 58: US 30 and I-15 (near Pocatello). The entrance ramp is closed. The left lane is closed. The roadway is reduced to two lanes. Bridge maintenance work is in progress. Road maintenance work is in progress. There is work on the shoulder. A detour is in operation. Follow the detour signs. Night time construction work is in progress. Consider using an alternate route. From 6:30PM MDT to 7:30AM MDT on Monday, Tuesday, Wednesday and Thursday. Until Thursday, at about 7:30AM MDT. Between Robinson Bar Road (14 miles north of the Stanley area) and Slate Creek Road (15 miles south of the Clayton area). The road is closed intermittently. Major road construction work is in progress. Night time construction work is in progress. There are alternating lane closures. Look out for flaggers. Expect delays. There is a width limit in effect. Consider using an alternate route. Width limit 14'0". Expect 15 - minute delays. Until August 7. 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. The roadway is reduced to one lane. Speed restrictions are in force. Speed limit 55 MPH. Until October 1. 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. Between Exit 67: Mill Street and The Montana State Line (4 miles east of the Mullan area). Road construction work is in progress. The roadway is reduced to one lane. Truck restrictions are in force. Speed limit 45 MPH. Width limit 8'6". Vehicle length limit 80 ft. Until September 20, 2016. Between Sand Ridge Road; Pocatello Valley Road and The East Holbrook City Limits (6 to 22 miles west of Malad City). The roadway is reduced to one lane. Road maintenance work is in progress. Look out for mobile maintenance operations. Look out for flaggers. From 7:00AM MDT to 4:30PM MDT on Mondays, Tuesdays, Wednesdays and Thursdays. Until Thursday, at about 4:30PM MDT. Between Antelope Flat Road (1 mile west of the Swan Valley area) and The Wyoming State Line (16 miles east of the Irwin 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). Look out for large animals on the roadway. Drive with extreme caution. Between Exit 2: Curtis Road and US 20 (Boise). Bridge maintenance work is in progress. The roadway is reduced to two lanes. Speed restrictions are in force. Speed limit 50 MPH. Until September 1. Between Exit 38: I-84B (Meridian) and I-184 (Boise). Road construction work is in progress. The roadway is reduced to three lanes. Speed restrictions are in force. Speed limit 55 MPH. Until August 15. Between The Inkom Port of Entry (1 mile south of the Pocatello area) and Exit 69: Clark Street (Pocatello). The roadway is reduced to one lane. Blasting is in progress. Road construction work is in progress. Consider using an alternate route. A pilot car is in operation. Expect delays. There is a width limit in effect. Expect 5 - minute delays. Width limit 16'0". From 7:00AM MDT to 7:00PM MDT on weekdays. Until December 15.
US 95: Midvale Hill Summit
ID 71: Brownlee Summit
US 93: Willow Creek Summit
ID 75: Galena Summit
ID 21: Highland Valley Summit
I-90: Fourth of July Pass
US 95: White Bird Hill Summit
US 89: Geneva Summit
ID 21: Beaver Creek Summit
US 93: Nevada Line Pass
ID 38: Holbrook Summit
ID 29: Bannock Pass
US 30: Border Summit
US 93: Lost Trail Pass
I-15: Monida Pass
US 30: Fish Creek Summit
US 20: Cat Creek Summit
ID 36: Emigration Pass
I-15: Malad Summit
ID 55: Horseshoe Bend Hill Summit
ID 21: Banner Creek Summit
ID 21: Mores Creek Summit
I-84: Sweetzer Summit
ID 28: Gilmore Summit
I-90: Lookout Pass
ID 33: Teton Pass
US 20: Targee Pass
ID 31: Pine Creek Pass
ID 87: Reynolds Pass
US 95: Lewiston Hill Summit
US 30: Georgetown Summit
US 12: Lolo Pass
Google Static Map Image
Mountain Pass Mountain Pass