Freight Economic Corridors are roadways, railways, and waterways important for the movement of commerce in Washington State. They are based on the Freight and Goods Transportation System classifications and, in the case of roadways, the corridor designations recognize the importance of system resiliency (alternate routes to primary cross-state freight routes during severe weather or other disruptions) and supply chains (first/last mile connections to freight intensive land uses).
WSDOT worked with the Freight Mobility Strategic Investment Board, Metropolitan Planning Organizations, Regional Transportation Planning Organizations, counties, cities, tribal governments, and ports to develop objective criteria in defining the statewide system of Freight Economic Corridors.
Freight Economic Corridors are used to identify and map supply chains, identify system condition and capacity issues, and to develop performance measures to improve freight mobility. Additionally, a list of freight priority improvement projects on the Freight Economic Corridors was developed and included in the 2014 Freight Mobility Plan capital project list; WSDOT received and included over 250 of these regional strategies from partners.
Freight demand and supply chains are dynamic and routing and traffic volumes change over time. Therefore WSDOT will update the Freight Economic on a two-year cycle, beginning in 2016. This update will be coordinated with the update to the FGTS, currently underway.
Rail Freight Economic Corridor Classification Structure:
The following FGTS classifications for railways are Rail Freight Economic Corridors:
R1: more than 5 million tons per year
R2: 1 million to 5 million tons per year
R3: 500,000 to 1 million tons per year
R4: 100,000 to 500,000 tons per year
Statewide Map of Rail Freight Economic Corridors (pdf 1.3 mb)
Waterway Freight Economic Corridor Classification Structure:
The following FGTS classifications for waterways are Waterway Freight Economic Corridors:
W1: more than 25 million tons per year
W2: 10 million to 25 million tons per year
W3: 5 million to 10 million tons per year
W4: 2.5 million to 5 million tons per year
W5: 0.9 million to 2.5 million tons per year
Statewide Map of Waterway Freight Economic Corridors (pdf 0.9 mb)
Truck Freight Economic Corridor Classification Structure:
The following FGTS classifications for roadways are Truck Freight Economic Corridors:
T1: more than 10 million tons per year
T2: 4 million to 10 million tons per year
Roadways that serve as alternatives to T1 truck routes that experience severe-weather closures, AND carry 300,000 to 4 million tons per year are also designated as Truck Freight Economic Corridors.
Roadways that serve as first/last mile connector routes between freight-intensive land uses and T1 and T2 truck routes are also designated as Truck Freight Economic Corridors. These designations are categorized as statewide, urban, and rural.
Statewide connector routes:
Between T1 and T2 truck routes and strategic U.S. defense facilities.
Over-dimensional vehicle routes that connect significant intermodal facilities and T1 and T2 truck routes.
Urban area connector routes:
Between the Interstate Highway system and the following: (1) the closest major airport with air freight service; (2) marine terminals, ports, barge loaders, and other intermodal facilities; and (3) warehouse/industrial lands.
From high-volume urban freight intermodal facilities to other urban intermodal facilities (e.g., from the Port of Seattle to the BNSF rail yard in Seattle).
Rural area connector routes:
Between state freight hubs located within five miles of T1 and T2 highways. Freight hubs are defined as: (1) agricultural processing centers; (2) distribution centers; (3) intermodal facilities; and (4) industrial/commercial zoned land.
Seasonal routes that carry one million tons during three months of the year of agricultural, timber, or other resource industry sector goods.
Additional information for Truck Freight Economic Corridors:
Data Sources and Interim Rules for Applying Connectivity Criteria (pdf 16 kb)
Statewide Truck Freight Economic Corridors GIS file (zip, 2.3 mb)
Truck Freight Economic Corridor Maps by MPO/RTPO: