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Seattle Oversize/Overweight Permit And Regulations

Note: For state regulations, see OD Regulations By State

Weight and Dimension Restrictions

Over-legal Truck Permits

These vehicles and loads exceed the maximum height, weight, width, and/or length, specified by state law. All oversized vehicles and loads traveling within Seattle must obtain a permit to operate. City law allows SDOT to issue these permits.

Truck Validations and Commercial Vehicle Enforcement Officer (CVEO) Escorts

  • If you are entering/exiting the City of Seattle with an over-legal load using a state or western regional permit, you are required to obtain a City of Seattle validation number before moving the load on City streets.
  • For holders of City of Seattle Annual Over-legal permits, a validation number is required for loads that exceed the dimensions listed on the permits.
  • Generally, over-legal loads requiring a City of Seattle Commercial Vehicle Enforcement escort will be moved between the hours of 4:00 AM and 6:00 AM.

For more details and to apply for over-legal truck permits see