Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
This website will transition to a NEW 511 site. Start using it NOW & give us feedback.
Restrictions on US 20: Idaho Falls to Montana
US 20: Idaho Falls to Montana

Between 800 North Road (6 miles east of the St. Anthony area) and 3500 East Road (near Ashton). Spring breakup restrictions in place. There is an axle load limit in effect. Speed limit 55 MPH. Advisory speed limit 30 MPH.

Web Comment: Commercial Vehicles 10,000 GVWR and greater restricted to 30 mph with legal axle weight. Restrictions are in place because the highway is showing stress from winter freeze/thaw cycles.

Last updated on March 6