Karmactive Team
Washington state is planning for a high-speed rail corridor connecting Portland, Seattle, and Vancouver, B.C., but the next major milestone — a completed Service Development Plan — won't arrive until 2028. And even that document won't select a preferred route or say where stations will go.
Washington State Department of Transportation is leading the Service Development Plan, expected to be completed by the end of 2028. Planning work began in January 2025 and runs through the end of 2028. The Federal Railroad Administration awarded WSDOT $49.7 million in December 2024 for this planning phase, and the state Legislature added $5.5 million in matching funds. The current Cascadia High-Speed Rail study corridor runs between the Portland metropolitan area and Vancouver, B.C., with the project centered on connecting Portland, Seattle, and Vancouver. WSDOT envisions high-speed service at roughly 220 mph, though the agency describes the range as 160–250 mph and the operating specification has not been finalized. The Amtrak Cascades service, which currently runs the corridor, operates at a maximum of 79 mph. No construction timeline has been set. WSDOT describes phases beyond 2028 as "future phases to be determined."
Travelers, freight planners, and regional communities between Portland, Seattle, and Vancouver, B.C., are watching a multi-year planning process that could eventually transform the corridor's transportation options. The 2028 plan will identify potential route and service options — not a final design. Environmental review, alignment selection, funding, and construction would follow in separate phases. No passenger service date has been announced.
What the 2028 Plan Will and Won't Decide
The Service Development Plan is the current scope. WSDOT has been explicit: the completed plan will identify potential route areas and conceptual service options but will not select a preferred route or station locations. Those decisions come in a later phase.
The comparison to existing service illustrates what the proposal is targeting. Amtrak Cascades currently runs at 79 mph along the same corridor. WSDOT's vision of roughly 220 mph service would mean trains covering the approximately 180-mile Portland-to-Seattle distance in under one hour — but that is a planning scenario, not a confirmed schedule, and the trip time depends on alignment, station stops, and operating specifications that have not been set. How Amtrak Cascades currently operates between Portland, Seattle, and Vancouver.
The project is a partnership among Washington state, Oregon, and British Columbia. Canadian federal and provincial authorities would need to participate in the cross-border segment. The planning work is scheduled to narrow potential route areas through 2026 and into 2027 before the full plan is published at the end of 2028. How high-speed rail planning phases work from study to construction.
When will Cascadia high-speed rail routes be decided?
WSDOT's Service Development Plan is expected to be completed at the end of 2028. The plan will identify potential route areas and conceptual service options but will not select a preferred route or station locations. Those decisions would follow in separate planning, environmental review, and design phases. No operating date has been announced for passenger service.
WSDOT will publish updated planning findings as the study progresses through 2027 and 2028. The next formal milestone is completion of the corridor options analysis, currently underway. Check back as WSDOT releases public findings ahead of the 2028 plan.
