Sound Transit Released West Seattle Rail Simulation
The agency unveiled a 3D flyover video detailing the planned light-rail extension to Alaska Junction.
Updated on Oct. 9, 2026 in Remote Work
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Sound Transit has released a three-minute simulation video for the upcoming West Seattle light-rail extension. The model incorporates site-specific geotechnical data into the transit plan.
Why it matters
The simulation provides residents with a detailed visual representation of the project following the completion of initial design phases. It serves as a tool to help the public understand how infrastructure will interact with local soil conditions.
The extension reached 30 percent design completion by summer 2026. The new digital flyover provides a 3-minute visual overview of the tunnel route from SODO to Alaska Junction.
The players
Sound Transit
This is the regional transit authority responsible for planning and operating light-rail, commuter rail, and bus services in the Seattle metropolitan area.
The details
The 3D model reflects design decisions finalized in July 2026 and utilizes geotechnical information to map the tunnel path. Sound Transit is concurrently moving forward with necessary property acquisitions to facilitate the project build.
Timeline
Design decisions for the simulation were finalized in July 2026.
The project reached 30 percent design completion in summer 2026.
An information session is scheduled for October 14, 2026, at noon in SODO.
The light-rail extension is currently projected to open in 2035.
Market Landscape
This project follows the development pattern established by the Sound Transit 3 regional transit plan. The expansion continues a long-term shift toward a centralized, rail-based transit network in the Pacific Northwest.
Residents can use the online simulation to visualize how the proposed rail infrastructure will impact their neighborhood near Alaska Junction. The information session offers locals a chance to engage with agency staff regarding property and construction details.
The takeaway
The simulation serves as an important visual guide for stakeholders tracking the progress of major municipal infrastructure projects. Residents should monitor future agency updates for upcoming changes to property zones and construction timelines.
What happens next
Sound Transit will host an information session on October 14, 2026, at noon in SODO to discuss the project further.
Further reading
Learn more about local transit developments on the Remote Work page.
Live Poll
Do you support the planned expansion of light rail service in your community?
