All oversize loads entering the City of Burien must adhere to the regulations outlined by the Washington State Department of Transportation (WSDOT) and obtain the required oversize/overweight permits.

In general, any vehicle exceeding 8 feet 6 inches in width, 14 feet in height, and weighing more than 80,000 pounds should obtain an oversize load permit from the Washington State Department of Transportation and comply with the City of Burien's municipal code.

For loads wider than 16 feet or taller than 16 feet, additional permits and coordination with the Burien Public Works Department are necessary to determine the most appropriate path through Burien, which is located in King County.

In accordance with WSDOT regulations, escort vehicles are mandatory for loads exceeding 12 feet in width or 14 feet 6 inches in height when operating within Burien.

For loads wider than 18 feet or taller than 18 feet, a law enforcement escort may be necessary. Coordination with the King County Sheriff's Department or the Washington State Patrol is essential for scheduling escorts, and applicable escort fees will be charged accordingly.

To obtain a permit, applicants should visit the WSDOT's online permitting system and provide detailed load information, proposed travel times, and planned escort arrangements, if required.

For specific queries or to discuss complex permit applications, applicants are advised to reach out to the WSDOT Permit Office directly. Additional information specific to Burien, like route surveys, can be coordinated through the Burien Public Works Department.

Applicants must provide a 2-3 business days' advance notice to process standard oversize load permits.

Oversize loads are generally restricted during weekday peak commute times (7-9 am and 4-6 pm) in order to minimize traffic impacts on major corridors such as Highway 518 and State Route 509.

During periods of adverse weather conditions like heavy rain or ice, oversize load permits could be temporarily revoked for safety.

Loads are advised to circumvent residential areas and follow designated truck routes through the city to reduce disturbance and ensure safety.

The base permit fee is approximately $30, with potential extra fees for oversize dimensions, overweight loads, or complex routing that may require detailed route surveys or additional law enforcement escorts.

The total cost may also vary based on the distance, weight, and the dimensions of the load being hauled through the city.