All oversize loads entering Longview, Washington, must conform to the regulations established by the Washington State Department of Transportation (WSDOT) and the City of Longview Public Works Department.

Any vehicle exceeding 12 feet in width, 15 feet in height, or weighing over 105,500 pounds (classified under the Superload category) is mandated to secure a special permit from the Longview Public Works Department.

Longview, situated in Cowlitz County, adheres to state guidelines while also implementing local ordinances that dictate the routing of oversize vehicles away from residential areas and historic districts.

In accordance with WSDOT regulations, escort vehicles are mandatory for oversize vehicles exceeding 16 feet in width or 18 feet in height on state routes within Longview.

For loads wider than 18 feet or taller than 19 feet, a law enforcement escort is necessary, particularly on routes traversing downtown Longview or using bridges. Scheduling and fees for law enforcement escorts can be arranged via the Longview Police Department.

To obtain a permit, applicants can either fill out the Oversize/Overweight Permit Application on the WSDOT Online Permitting System or contact the Longview Public Works Department at (360) 442-4500.

Documentation required includes detailed route plans, load specifications, and, for certain oversize categories, a traffic control plan.

Oversize loads are restricted during peak traffic times (7-9 am and 4-6 pm) on major routes such as Ocean Beach Highway (US-30) and Interstate 5 within Longview.

Seasonal restrictions may be enforced during periods of extreme weather, such as icy conditions on the bridges over the Cowlitz and Columbia Rivers, or during annual events that draw large crowds.

The base permit fee in Washington State is $30, but additional charges apply based on the route's distance and the need for escorts.

Complex or multi-day permits incur higher charges, with Superload permits potentially exceeding $1,000, factoring in route surveys and extensive planning.