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Permit Sonoma › Divisions › Engineering & Construction › Engineering & Water Resources › Transportation Permits
Engineering & Water Resources

Transportation Permits

Heavy load transporter

A transportation permit is required to operate or move vehicle(s) or special mobile equipment on County roads of a size or weight of vehicle or load exceeding the maximum limitations specified in the California Vehicle Code.

California Vehicle Code (CVC) 35780

Contact Information:

Application Process

A Transportation Permit Application can be submitted via Permits Online.

Once the Transportation Permit Application is approved and paid, Permit Sonoma staff will email the permit to the applicants.

  1. Account Registration

    Register for a Permits Online account if you do not have one already.

    A Permits Online account is needed to submit permit applications, check the status of your permits, pay permit fees, schedule inspections, etc.

  2. Submission

    1. Please review ENC-003 Transportation Permit Application (PDF) to ensure you have the necessary information ready. But you do not submit this form. You will fill out an online version in step b below.
    2. Apply via Permits Online.

  3. Staff Review

    After receiving your application, Permit Sonoma staff will review your application for the following:

    • Confirm application completeness.
    • Evaluate application to determine load weight class & dimensions.
    • Review route to determine whether any rerouting is necessary. Rerouting may be required if there are any conflicts with structures, events, or anticipated traffic.  
    • Evaluate route to determine if pilots and/or a CHP escort are required.

  4. Payment

    You must wait until the permit has been issued and you have received a record number (beginning with "TRN"). You will need your record number to make your payment.

    Once you receive the application invoice, please visit Permits Online and:

    1. Select ‘Pay Fees’ on the home page.
    2. Enter the Record Number and select ‘Search’.
    3. Select the ‘Payments’ Tab at the top and then ‘Pay Fee’ on the right side of the invoice line.
    4. Follow the instructions from there.

    Please email PermitSonoma-Transportation@sonoma-county.org to notify us that you have paid. Be sure to include the Record Number in the email.

Questions or Issues?

Contact us via email at PermitSonoma-Transportation@sonoma-county.org for assistance.