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WSDOT brief: Cascadia planning, I‑5 master plan and high‑speed rail moving into public phases

Washington State Transportation Commission · January 21, 2026
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

WSDOT assistant secretary John White said Western Washington planning efforts — the I‑5 master plan, Cascadia high‑speed rail corridor identification and Amtrak Cascades service development — are aligning for public engagement in 2026 and aim to coordinate multimodal capacity for projected population growth through 2050.

John White, assistant secretary for Urban Mobility and Mega Programs at WSDOT, briefed the commission on coordination among three Western Washington planning efforts: the I‑5 master plan, the Cascadia high‑speed rail corridor identification program, and Amtrak Cascades service development.

White said teams compiled more than 300 data sources and 600 datasets to…

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