Minnesota Department of Transportation

511 Travel Info

Oversize/Overweight Permits

Frequently asked questions (FAQs)

Overdimension Permits

  1. How do I get a permit?
  2. How do I increase my registered weight?
  3. How long will it take to receive my permit?
  4. What are the maximum dimensions of a vehicle that I can operate without needing an overweight/overdimension permit?
  5. When do I need a permit?
  6. When am I exempt from getting a permit?
  7. When are escorts required?
  8. When do seasonal load limits or increases take effect?
  9. Where do I find information concerning new laws, rules and regulations about overdimension permits?

Overdimension Permits

How do I get a permit?

You can get a permit in any of three ways:

  • ORDER ONLINE 24/7
    • For instructions and tips on how to enter routes into MnDOT's online Oversize Overweight Permitting System, please see guide.
  • Permit Service
  • Walk-in

How do I increase my registered weight?

Please note that obtaining an Oversize/Overweight Permit does not increase your vehicle’s registered weight. To get a temporary weight increase permit, please visit Minnesota Department of Public Safety, Driver and Vehicle Services Temporary Registration Weight Increase Permits.

A 30, 60 or 90-day temporary weight increase permit is available at any Minnesota Deputy Registrar office or can be requested by fax.

  • Visit a Deputy Registrar:
    • Search for a local office on the Office Locations page
    • Enter a starting address or Zip Code
    • Select “Vehicle Titling and Registration including Tab Renewals” from the services list
    • Click “Find Office Locations” to see a list of deputy registrar offices
  • Request by Fax:

If traveling on city, township, or county roads, a permit must be obtained from that government entity.

How long will it take to receive my permit?

Generally 1 business day.

However, three (3) or more business days are required for processing applications that need special handling. (Special handling is defined as application(s) requiring, but not limited to the following: district review, route survey, and most self-propelled vehicles.)

What are the maximum dimensions of a vehicle that I can operate without needing an overdimension permit?

  • Height: 13'6"
  • Width: 8'6" This excludes rearview mirrors or temporary load securement devices that may extend an additional three inches on each side of the vehicle or load
  • Length: Maximum lengths for various vehicles are:
    • Single motor vehicle: 45'
    • Mobile crane: 48'
    • Each trailer or semi-trailer of a twin trailer combination: 28'6"
    • Trailer of a two-vehicle combination: 45'
    • Semi-trailer of a two-vehicle combination: 48'
    • Semi-trailer of a two-vehicle combination, if the distance from kingpin to the center of the rear axle group is 43' or less: 53'
    • Twin trailer combination, drive-away saddlemount combination, and drive-away saddlemount vehicle transporter combination: 75'
    • Truck-tractor with semi-trailer combination and all other two-vehicle combination: 75'

When do I need a permit?

An oversize and/or overweight permit is required when:

  • An overall loaded width exceeds 8’6”
  • An overall loaded height exceeds 13’6”
  • An overall loaded length exceeds 75’0” on combination vehicles
  • An overall loaded length exceeds 45’0” on single vehicles
  • When the overall GVW exceeds 80,000 lbs

When am I exempt from getting a permit?

  • When hauling utility poles (over-length only)
  • Driving or towing Implements of Husbandry (e.g. farm equipment) at speeds less than 30 miles per hour - no interstate travel is allowed
  • Through a Governor's Order or Disaster Relief

When are escorts required?

In general, pilot car escort vehicles are required when overall widths exceed 14’6”, or under any one of the following conditions:

Certified Pilot Cars

On multi-lane; divided roadways
  • One rear pilot car when exceeding 14’6” wide or when exceeding 110’ long
  • One front and one rear pilot car when exceeding 150’ long.
On two lane; non-divided roadways
  • One front and one rear pilot car when exceeding 14’6” wide, up to 16’0”wide or when exceeding 110’ long

A certified pilot car may be required on a permit under special restrictions. Additional escorts may be applied for excessive length. MnDOT reserves the right to require additional pilot car escorts based on conditions or circumstances.

Certified Peace Officer Escorts

In general, certified Lead Peace Officer escort are required any time a vehicle or load encroaches the centerline into oncoming traffic lane, encroaches oncoming traffic lane(s) while navigating turns, or when required on a permit. Certified Peace Officer escort(s) may also be required for excessive length, and under the following conditions:

On multi-lane; divided roadways
  • When indicated on a permit
On two lane; non-divided roadways
  • A certified lead peace officer is required when exceeding:
    • 16’0” wide on 8’0” widest axle
    • 15’6” wide on 8’6” widest axle
    • 15’1” wide on 9’0” widest axle
    • 14’1” wide on 10’0” widest axle
    • 13’1” wide on 11’0” widest axle
    • 12’0” wide on 12’0” widest axle
  • One certified lead peace officer is required when the widest axle exceeds 12’0”
  • Or when indicated on a permit

MnDOT reserves the right to require additional Peace Officer escorts based on conditions or circumstances.

When do seasonal load limits or increases take effect?

See the seasonal load limits page.

Where do I find information concerning new laws, rules and regulations about overdimension permits?

Please refer to: