Truck Mobility and Permits
All over-legal loads traveling within the City of Seattle are required to obtain a special permit. See this link for more information.
Spokane Street Corridor Truck Routing
The SDOT Traffic Management Division has published an informational map to for use by truck drivers who use the Spokane St Corridor. It was printed in five languages (English, Punjab, Amharic, Spanish and Russian). SDOT encourages alternative routes during periods of corridor congestion and construction disruption. Printed versions of these maps are available for use from SDOT. Click here to see the document.
SDOT has posted signs on City Owned Bridges with Vehicle Weight Restrictions. Click here to view these locations.
In addition, the Washington State Department of Transportation (WSDOT) has posted weight restrictions on the Alaskan Way Viaduct (State Route - SR 99) on both the Viaduct and at downtown Seattle ramps. Click here to see the WSDOT site for specific information.
You are responsible to verify bridge heights along your planned route.s
Hazardous Materials Restricted in Battery Street and on Viaduct During Peak Travel Periods
SDOT has posted signs to remind drivers that hazardous materials are restricted at all times in the SR 99 Battery Street Tunnel and on the Alaskan Way Viaduct during weekday peak travel periods. The City of Seattle Traffic Code prohibits transport of hazardous materials through the tunnel at all times. Weekday restrictions will continue on the Alaskan Way Viaduct between 7:00 and 9:00 a.m. and 4:00 to 6:00 p.m.
See this link for further information:
The Port of Seattle has assigned terminal space to accommodate overnight drayage truck parking. See this site for related information.