WSDOT advances Cascadia high-speed rail planning

Planning for the Cascadia High-Speed Rail project has entered a new phase, with the Washington State Department of Transportation advancing work on a Service Development Plan that evaluates regional connectivity from Portland, Oregon, through Seattle to Vancouver, British Columbia. The comprehensive megaregion initiative aims to deliver speeds between 160mph and 250mph on dedicated tracks, establishing an express transit option that complements existing Amtrak Cascades passenger rail service.

Proponents of a Bellingham stop say that anchoring a northern station in Whatcom County would bridge the international gap toward Vancouver, British Columbia, while supporting local economic development, reducing automobile congestion along I-5, and connecting the northern corridor to the broader Cascadia Innovation Corridor. WSDOT’s market analysis and public engagement tools—including online community surveys—are collecting public input to shape route alternatives and station placement criteria as the state moves toward finalizing alignment decisions.

The Washington State Department of Transportation (WSDOT) has opened a formal public engagement period and online survey through Nov. 13, 2026, gathering input on its coordinated Cascadia High-Speed Rail and Interstate 5 Program. The early planning initiative pairs an actionable I-5 Master Plan with a high-speed rail Service Development Plan spanning from Portland, Oregon, through Seattle to Vancouver, British Columbia.

System Capacity and Corridor Projections

WSDOT planning documents and recent market analyses project growing regional congestion along the corridor by 2050 as detailed below.

• statewide truck trips in Washington are forecast to grow 50% to 67% by 2050. Commercial trucks currently account for up to 20% of total I-5 traffic volume
• approximately 80% of Washington’s I-5 corridor is projected to operate at medium or high congestion levels by 2050, up from 59% today
• in Oregon, severe congestion on I-5 through Portland is modeled to reach 78% by 2045, compared to 33% in 2019

The high-speed rail proposal evaluates electrified systems operating at speeds between 160 and 250 mph on dedicated rights-of-way. Advocacy coalitions and early engineering concepts cite potential capacity equivalents of up to 32,000 passengers per hour within a 50-foot right-of-way, with projected end-to-end trips such as Seattle to Vancouver, B.C., in roughly 47 to 60 minutes.

Local Rail Integration and Service Tiers

State transportation officials stated that the high-speed system is not intended to replace existing Amtrak Cascades passenger rail.

Under the coordinated multi-tier operational model presented to the Washington State Transportation Commission, Cascadia High-Speed Rail would function as an express intercity spine with limited stops. Conventional Amtrak Cascades trains and regional transit providers would provide feeder and local service to intermediate cities located between high-speed rail hubs.

The current phase of the Service Development Plan—supported by a $49.7 million Federal Railroad Administration grant awarded to WSDOT—is evaluating market demand, broad corridor alignments, governance frameworks, and environmental constraints. WSDOT officials emphasized that this stage does not finalize specific station locations or establish a preferred route.

Decisions regarding specific alignment alternatives through Whatcom County and whether trains will stop at a designated Bellingham station are scheduled for subsequent planning phases following the 2028 Service Development Plan milestone.

Public Comment Details

The online open house is accessible at engage.wsdot.wa.gov/cascadia-program, with an accompanying questionnaire hosted at surveymonkey.com/r/JH5PKLL. The feedback window closes Nov. 13, 2026.

A overview of the regional high-speed rail concept is available in the October 27, 2025, Cascadia High-Speed Rail Vision Video. This video (below) illustrates how business, labor, and municipal stakeholders envision the travel corridor linking Washington, Oregon, and British Columbia.