When Permit Is Needed
Over 8’6″ wide, Over 14′ high, Trailer over 48′ long, Over 80,000 lbs

Times Of Movement
½ hour before sunrise to ½ hour after sunset.
If 10′ wide or less, travel is allowed 24-7
Loads 10’ wide/14’6” high/100’ long on 2-lane or 120’ long on 4-lane may travel 24/7
Restricted holidays: New Year’s Day, Memorial Day, July 4th, Labor Day, Thanksgiving, & Christmas. Permit office closed those days plus Washington’s Birthday, Columbus Day & Veteran’s Day.

When Pilot/Escort Vehicle is Required

2-lane highways:
1 front if over 12′ wide or 16′ high,
1 rear if over 100′ long,
2 (front & rear) if over 14′ wide.
On interstates:
1 rear if over 15′ wide or 115′ long,
1 front if over 16′ high.

Department of Transportation Permits Office
Hours: 7am-5pm MT
Idaho Transportation Department
3311 W. State St. or PO Box 7129
Boise, ID 83707-1129

Division of Motor Vehicles/Port of Entry & Overlegal Permits
(208)334-8420 Fax: (208) 334-8419

Idaho Road Conditions Information Line

Road Construction and Conditions Map