Oversize/Overweight Load Permits

The US Department of Transportation has issued federally mandated maximum weights for the National System of Interstate and Defense Highways.

Maximum Weights

  • 80,000 pounds gross vehicle weight
  • 20,000 pound single axle weight
  • 34,000 pound tandem axle weight

Axle Spacing:

To protect our nation’s bridges, axle spacing must be considered for Federal weight compliance. The number of axles and the spacing of axles carrying the vehicle load must be calculated. The Federal bridge axle spacing formula must be applied to commercial vehicles to determine compliance with Federal weight limits. The Federal bridge formula applies when the gross weight on two or more consecutive axles exceeds the limitations of the formula, except that two consecutive sets of tandem axles may carry a gross load of 34,000 pounds each if the overall distance between the first and last axle is 36 feet or more.


Federal Bridge Axle Spacing Formula:

W=500(LN/N-1 + 12N + 36); where W=overall gross weight on any group of 2 or more consecutive axles to the nearest 500 pounds. L=distance in feet between the extreme of any group of 2 or more consecutive axles, and N=number of axles in the group under consideration


Overweight Load Permits

The Federal government does not issue permits for oversize or overweight vehicles. Individual States offer permit options.


Overwidth Permits:

States may grant special use permits to motor vehicles that exceed the Federal 102 inch width limitation.

State Oversize/Overweight Load Permit Contacts

To obtain State permits, visit the State permitting websites, or contact the State permitting office by telephone.

  • Alabama 800-499-2782

  • Alaska 907-365-1200

  • Arizona 602-771-2960

  • Arkansas 501-569-2381

  • California 916-322-1297

  • Colorado 800-350-3765

  • Connecticut 860-594-2878

  • Delaware 302-744-2700

  • District of Columbia 202-442-4670

  • Florida 850-410-5777

  • Georgia 888-262-8306

  • Hawaii 808-831-6712

  • Idaho 208-334-8420

  • Illinois 217-785-1477

  • Indiana 317-615-7320

  • Iowa 515-237-3264

  • Kansas Special Permits 785-368-6501

  • Kentucky 502-564-1257
  • Louisiana 225-343-2345 or 800-654-1433

  • Maine 207-624-9000, extension 52134

  • Maryland 800-846-6435

  • Massachusetts 781-431-5148

  • Michigan 517-241-8999

  • Minnesota 651-296-6000

  • Mississippi 888-737-0061 or 601-359-1717

  • Missouri 866-831-6277

  • Montana 406-444-7262

  • Nebraska 402-471-0034

  • Nevada 800-552-2127

  • New Hampshire 603-271-2691

  • New Jersey 609-530-6089

  • New Mexico 505-476-2475

  • New York 518-485-2999 or 888-783-1685

  • North Carolina 888-574-6683

  • North Dakota 701-328-2621
  • Ohio 614-351-2300

  • Oklahoma 405-425-7012

  • Oregon 503-373-0000

  • Pennsylvania 717-787-4680

  • Rhode Island 401-946-0090

  • South Carolina 877-349-7190

  • South Dakota 605-757-6406

  • Tennessee 615-741-3821

  • Texas 800-299-1700, option 1

  • Utah 801-965-4892

  • Vermont 802-828-2064

  • Virginia 804-249-5130

  • Washington 360-704-6340

  • West Virginia 304-558-0384

  • Wisconsin 608-266-7320

  • Wyoming 307-777-4376

Nationwide Transportation © All Rights Reserved.2017

Privacy Policy | Site Developed by The Goodness Company