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Operations > Highway Maintenance > OS/OW Online Permitting

OS/OW Vehicle & Load (click on picture to view important links) Welcome to OS/OW Online Permitting!

Our "OverHaul" Online Permitting Web site will streamline your Oversize/Overweight vehicle permitting process. If you are moving a vehicle and/or a non-divisible load on New Hampshire state maintained highways and you exceed the legal requirements, you can now apply for your permits online, 24 hours a day, 7 days a week.

Permits will be processed in the order they are received, by date and time requested, Monday - Friday between the hours of 8:00 AM - 4:00 PM EST/EDT, except holidays. Permit Office: (603) 271-2691 Fax: (603) 271-5990. (Phones are shut off at 3:45 pm.) Email:

Please scroll down and read any Important News and Announcements before reading and accepting the terms and conditions and before proceeding to OverHaul to process your permits.

ATTENTION NEW USERS: When proceeding to the "Overhaul Login Page" and clicking on the "NEW USERS START NOW" blue GO button, this is to be used by "INDIVIDUALS" or "COMMERCIAL CARRIERS" only. Permit Service Companies must be approved through another process, and at this time the New Hampshire OS/OW Permit Office is NOT setting up any new services. Also Permit Service Companies may not setup Individual/Company accounts to process permits on their behalf.

Important News and Announcements

  • OVERLENGTH AND OVERHEIGHT LOADS greater than 110’ in length and/or greater than 13’6” in height requires a NH Route Survey for all NH STATE ROUTES traveled. As of April 2, 2018 the route survey shall be provided on the NH Route Survey Form Please download this form and submit a properly completed form and any additional documents needed by faxing a copy to the permit office at 603-271-5990, or emailing to:

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OS/OW Online Permitting System is currently up and running.

By clicking the button below you are accepting and agreeing to all the terms and conditions with the permitting process, and that by applying for a permit, the holder certifies that he/she is familiar with all Federal and New Hampshire traffic, motor vehicle, and other laws, requirements, and rules governing a move including, but not limited to, time, date, and location, as well as size of load, and will be in full compliance during movement. The applicant agrees that all dimensions and weights applied for are true and correct. The permit does not allow the permit holder to exceed manufacturers’ Gross Combined Weight Rating (GCWR) or Gross Vehicle Weight Rating (GVWR), axle capacities, or tire capacities on any portion of the permitted equipment. If the load on any portion of the permitted equipment exceeds any of these manufacturers’ criteria, the permit shall be null and void. The applicant agrees to move at own risk and assume all responsibility for injury to persons or damage to public or private property caused directly or indirectly by the transportation of the vehicle or load under the permit.


New Hampshire Department of Transportation
PO Box 483 | 7 Hazen Drive | Concord, NH | 03302-0483
Tel: 603.271-3734 | Fax: 603.271.3914

copyright 2015. State of New Hampshire