Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
US 20: Idaho Falls to Montana
US 20: Road construction, seal coat, alternating lane closures, night time construction work, reduce your speed, speed restrictions in force.
Between Exit 309: Science Drive (Idaho Falls) and 6800 South Road (3 miles east of the Rigby area). Road construction work is in progress. A seal coat treatment has been applied. There are alternating lane closures. Night time construction work is in progress. Reduce your speed. Speed restrictions are in force. Width limit 14'0". From 9:00PM MDT to 6:00AM MDT daily. Until today at about 6:00AM MDT.

Web Comment: Expect to see nighttime sealcoating operation
Last updated on July 18
US 20 in both directions: Road construction, roadway reduced to one lane, construction traffic merging, speed restrictions in force, width limit in effect, delays.
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.

Web Comment: Traffic is being routed to the northbound ramps via crossovers. Follow all construction signs, and use caution through the work zone. Direct perpendicular accesses have been closed for construction of the Thornton Interchange. For access to Thornton businesses use Exit 332, and follow the detour. Commercial drivers transporting permitted loads wider than 14 feet need to contact Resident Engineer Wade Allen (208-745-5680), or Staff Engineer Bryan Young (208-745-5682), 24 hours in advance, for special authorization to pass through the construction zone.
Last updated on July 14
US 20: Road construction, paving operations, look out for flaggers, traffic is being held. Expect delays, width limit in effect, speed restrictions in force.
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.

Web Comment: Expect up to 90 min delays.
Last updated on July 13
Switch to Winter Driving Conditions
Switch to Road Reports
Restrictions on US 20: Idaho Falls to Montana
Map of Reports on US 20 Between Exit 309: Science Drive (Idaho Falls) and 6800 South Road (3 miles east of the Rigby area). Road construction work is in progress. A seal coat treatment has been applied. There are alternating lane closures. Night time construction work is in progress. Reduce your speed. Speed restrictions are in force. Width limit 14'0". From 9:00PM MDT to 6:00AM MDT daily. Until today at about 6:00AM 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 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 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.
US 20: Road construction, seal coat, alternating lane closures, night time construction work, reduce your speed, speed restrictions in force.
US 20 in both directions: Road construction, roadway reduced to one lane, construction traffic merging, speed restrictions in force, width limit in effect, delays.
US 20: Road construction, paving operations, look out for flaggers, traffic is being held. Expect delays, width limit in effect, speed restrictions in force.
Google Static Map Image
Closure Closure Restriction Restriction Spring Breakup Spring Breakup
Truck Ramp Truck Ramp Weigh Station Weigh Stations