The transport of goods and services is critical to Seattle’s and the region’s economic development. As the state’s largest metropolitan area and as a major port and trade gateway, Seattle’s businesses and industries rely on truck, rail, marine, and air transport. Refer to the Freight Mobility Action Plan for more information about Seattle’s freight network. Section 4.26.1 below identifies links to freight design resources presented in this Manual.

Freight Networks: All arterial streets support freight movement. The Major Truck Street network is defined and mapped in the Transportation Strategic Plan (TSP). In addition to the Major Truck Street classification (Figure 25), refer to Figure 17: Existing Connector Routes between Port Terminals and the Freeway Network, and Figure 18: Existing Connector Routes between Port Terminals and Railroad Intermodal Facilities. The roadways defined in these networks are key routes for freight movement. Projects that impact the freight network must recognize and consider the impacts of a proposed project on freight facilities to reduce project impacts.

Links to Design Criteria: A number of design criteria defined in this manual specifically support freight mobility and access. Refer to the following sections for more detailed information:
3.1.1c. Existing Streets, Improvement Requirements by Zone, Industrial Landscape Street Map
4.2.1: Street Classifications—Major Truck Streets
4.2.1f: Industrial Access Street Type
4.6 Roadway Width
4.7 Roadway Pavement
4.8 Intersections