The State of Iowa has legal limits for the length, width, height, and axle weights for vehicles traveling on Iowa roadways. See below for more information. 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 (City streets, County Roads, and DOT Highways) along the route. For Iowa DOT Permits, call Motor Carrier Services at 515-237-3264 or online.
Winnebago County Permits
Click here for a Microsoft Word version of the Oversize/Overweight permit application.
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
57-foot lowboy trailer hauling construction equipment
Weight 20,000 lb. single axle
34,000 lb. tandem axle
80,000 lb. gross weight