Oversize/Overweight Permits2017-06-19T11:59:31+00:00


Oversize/Overweight Load Permit Application & Instructions

The State of Iowa has legal limits for the length, width, height, and axle weights for vehicles traveling on Iowa roadways.  Winnebago County may issue permits for the movement of construction machinery or vehicles with indivisible loads which exceed the maximum dimensions and weights prescribed by law.

Permits are required from ALL JURISDICTIONS (Cities streets, County Roads, and DOT Highways) along the route.

For Iowa DOT Permits, call Motor Carrier Services at 515-237-3264.
Permits can be obtained online as well.

County Permits

Permits may be mailed, faxed, or emailed.

Oversize/Overweight Load Permit Application & Instructions

Click here for a fillable word form.


Oversize/overweight (OS/OW) loads are enforced by the DOT’s Motor Vehicle Enforcement Officers in cooperation with local law enforcement.  A permit is typically required if vehicle dimensions exceed:

Width      8 feet 6 inches

Height     13 feet 6 inches

Length    41-foot single vehicle

53-foot trailer

57-foot lowboy trailer hauling construction equipment

Weight    20,000 lb. single axle

34,000 lb. tandem axle

80,000 lb. gross weight


Iowa DOT Oversize/Overweight Permits Page

Iowa Truck Information Guide

Iowa Code 321E – Vehicles of Excessive Size and Weight

big rig