Wisconsin Department of Transportation

Alert: The following services will be unavailable on Saturday, January 5, 2013 from 12 a.m. (midnight) to 6 a.m. CST due to system maintenance.

Determine if a permit is required

  • A permit is issued to a carrier to allow operation of a vehicle or load that exceeds the statutory limits.
  • Permits are generally issued for non-divisible loads, with some significant exceptions.
  • Permits are issued by DMV and local highway maintenance authorities (for local roads and state trunk highways within the jurisdiction's boundaries only and for certain types of permits).


A permit is typically required if vehicle dimensions exceed:

Width 8 feet, 6 inches
Height 13 feet, 6 inches
Length - (Single vehicle and load) 45 feet
Length - (Combination of 2 vehicles) 70 feet
Length - (Truck/tractor and semi trailer) 75 feet (see Trans 276 for more information and exceptions)

For more information and exceptions to the above dimensions:


A permit is typically required if vehicle weights exceed:

Axles Weight
Any one wheel or wheels supporting one end of an axle 11,000 lbs
Truck tractor steering axle 13,000 lbs
Single axle 20,000 lbs
Tandem axles 34,000 lbs
Maximum gross vehicle weights on all axles 80,000 lbs

Weight limitations on class B highways are 60% of class A highway weight limitations

Class B highways includes those county trunk highways, town highways and city and village streets or portions thereof, which have been designated as class B highways by the local authorities 

For more information and exceptions to the above weights:

What type of permit is needed?

If you have questions:

  • Email: oversize-permits.dmv@dot.wi.gov
  • Call: (608) 266-7320
  • FAX: (608) 264-7751
  • Write to the address below:

    Wisconsin Department of Transportation
    Motor Carrier Services
    PO Box 7980
    Madison, WI 53707-7980

Questions about the content of this page:
Motor Carrier Services, oversize-permits.dmv@dot.wi.gov
Last modified: April 24, 2014

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