1. Home
  2. Travel
  3. Commercial vehicles
  4. Route & commercial vehicle restrictions

Route & commercial vehicle restrictions

Restrictions and requirements for oversize and overweight commercial vehicles operating on Washington state roadways. Commercial vehicle drivers are responsible for verifying route restrictions, overhead height clearances, and other requirements.

Sign up for email or text updates. Freight alerts in the subscription topics news will have new commercial vehicle:

  • Oversize restrictions
  • Night closures
  • Lane closures

Bridge clearance

Check for restrictions and overhead clearance on your route.

Current restrictions

Restrictions for oversize/overweight vehicles on state roadways, bridges and structures.

Chain requirements for vehicles over 10,000 pounds

Tire chain requirements for vehicles over 10,000 pounds gross vehicle weight (GVW). WAC 204-24-050 (2) (f).

Curfew hours & holiday restrictions

Days when travel is restricted: Vehicles operating under special permit for overweight/over dimensional, except as provided for in Washington Administrative Code (WAC 468-38-075), may be restricted from the state highways on the holidays.

Emergency vehicles posted bridge restrictions

Emergency vehicles posted bridge restrictions list for Emergency Vehicles that are above the listed limits for posted bridges and structures.

Contact information

Commercial Vehicle Services
Permit information
CVSpermits@wsdot.wa.gov
360-704-6340

April is work zone safety awareness month - learn more

1,557 work zone-related crashes

were recorded on state highways in 2025.

542 people were injured

in 2025 due to work zone-related crashes. 

29% increase in fatality collisions

in work zones from 2024 to 2025.