Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
Mountain Passes—Statewide
Map of Statewide 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. Look out for flaggers. Speed restrictions are in force. There is a width limit in effect. Drive with extreme caution. Speed limit 35 MPH. Width limit 14'0". Until September 15, 2017. Between Newsome Creek Road and Red River Road. The road is closed because of a landslide. Look out for flaggers. From 7:00AM PDT to 12:00PM PDT and from 1:00PM PDT to 5:30PM PDT on weekdays. Between The Utah State Line (12 miles south of the Malad City area) and Exit 31: ID 40; Downey Road (10 miles south of the Arimo area). The roadway is reduced to one lane. There are alternating lane closures. Look out for mobile maintenance operations. There is work on the shoulder. If weather permits. From 7:00AM MDT to 4:30PM MDT on Mondays, Tuesdays, Wednesdays and Thursdays. Until June 15. 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 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 24th Street North (near Fruitland) and Ross Road (near Weiser). Look out for mobile maintenance operations. Look out for a slow moving maintenance vehicle. Drive carefully. From 9:00AM MDT to 4:00PM MDT on Tuesday, Wednesday and Thursday. Until Thursday, at about 4:00PM MDT. 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 two lanes. 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 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 Minaloosa Valley Road and Lovell Valley Road (3 to 4 miles south of the Plummer area). The roadway is reduced to one lane. There is work on the shoulder. Look out for flaggers. Advisory speed limit 45 MPH. Until tomorrow at about 3:00PM PDT.
ID 31: Pine Creek Pass
US 95: Lewiston Hill Summit
ID 36: Emigration Pass
ID 87: Reynolds Pass
US 93: Willow Creek Summit
US 95: White Bird Hill Summit
US 89: Geneva Summit
ID 55: Horseshoe Bend Hill Summit
I-15: Malad Summit
ID 21: Beaver Creek Summit
I-15: Monida Pass
US 12: Lolo Pass
ID 28: Gilmore Summit
ID 21: Banner Creek Summit
ID 29: Bannock Pass
US 30: Border Summit
US 93: Lost Trail Pass
ID 38: Holbrook Summit
ID 75: Galena Summit
US 20: Targee Pass
I-84: Sweetzer Summit
ID 21: Highland Valley Summit
I-90: Lookout Pass
ID 71: Brownlee Summit
ID 33: Teton Pass
ID 21: Mores Creek Summit
US 30: Georgetown Summit
I-90: Fourth of July Pass
US 95: Midvale Hill Summit
US 93: Nevada Line Pass
US 20: Cat Creek Summit
US 30: Fish Creek Summit
Google Static Map Image
Mountain Pass Mountain Pass