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Super Heavy Single-Trip Permits

super-heavyTxDMV issues a single-trip super heavy permit for the movement of non-divisible vehicles and/or loads that exceed 254,300 pounds total gross weight, the maximum permit weights on any axle or axle group or between 200,001 pounds and 254,300 pounds with less than 95 feet of axle spacing.

Single-trip permits may only be used for one movement, during the times specified on the permit, from a specific point of origin to a specific destination.

Texas Size and Weight Limits

How to Apply

txprosApply online
through TxPROS


You may also:

  • Download and submit Form 305, Super Heavy Application Packet by fax to (512) 465-4254, email to This email address is being protected from spambots. You need JavaScript enabled to view it. or by mail to TxDMV-MCD, 4000 Jackson Ave., Austin, Texas 78731.

Payment information must be provided with faxed and mailed applications. Do not include payment information with applications submitted via email. Instead, contact our office to provide payment information.

A copy of the signed Certification Regarding Agreement to Transport Super Heavy Load(s) (Form MCD-305 SH CERT) and a loading diagram must be included with the application.

Applications and supporting documentation must be sent six to eight weeks before the permit is required, unless an existing pre-approved route is on file.

TxPROS Information and Tutorials

305 Super Heavy Application Packet


Operating Authority

Prior to being issued a permit, you must comply with TxDMV Motor Carrier Registration (MCR) or Unified Carrier Registration (UCR).

TxDMV Number

Unified Carrier Registration

Fees & Payment

The permit fee is $60.
In addition to the permit fee, a $375 highway maintenance fee and the applicable vehicle supervision fee are required. Vehicle supervision fees are listed in the table below.

Item Fee
Bridge analysis performed by a state (TxDOT) approved private engineer $500
Additional identical permit loads ordered within 30 days of last permit $35
No bridges crossed on route $100

Fees are payable by:

  • MasterCard, VISA, Discover or American Express (a service charge of 25 cents per permit plus 2.25 percent will be added.)
  • Funds deposited in a pre-established escrow account
  • FirstPay Account established through Frost Bank San Antonio (
  • Automated Clearing House (ACH) – Electronic Check (only accepted when ordering online through TxPROS)
  • Personal check, business check, cashier's check or money order, payable to the Texas Department of Motor Vehicles (for mail applications only)

A permit fee will not be refunded after the permit number has been issued unless such refund is necessary to correct an error made by the Motor Carrier Division.

Escrow Accounts

Additional Requirements

Loading diagrams must specify the following:

  • number of axles
  • number of tires on each axle
  • tire size on each axle
  • distance between each axle
  • tare and gross weight for each axle group
  • transverse spacing of each set of dual wheels
  • the load's center of gravity
  • distance from the center of gravity to the center of the front bolster
  • distance from the center of gravity to the center of the rear bolster
  • distance from the center of the front bolster to the center of the fifth wheel of the truck
  • distance from the center of the rear bolster to the center of the closest axle
  • tire pressure
  • weight per lateral inch
  • any other measurements as may be needed to verify that the weight of the load is adequately distributed among the various axle groups in the amounts shown on the loading diagram

More Information

  • General escort and equipment requirements apply to both permitted and escort vehicles.
  • Review your permit for specific conditions that apply to your load and movement.
  • Some Oversize/Overweight permits may require coordination with Texas Department of Transportation district offices to determine route suitability or to facilitate movement of the load.

Escort and Equipment Requirements

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