Sounder South Capacity Expansion
Improvements to serve more Sounder South riders

News and updates

Project update

Project Engagement and Design Updates

2025 was an exciting year for the Sounder S Line, as the Sounder Rail Track and Signal Improvement (SRTSI) Project advanced steadily toward its goal of updating the service for the future. Let’s look…

Project update

Your input on pedestrian connections will inform the next steps

This past summer, we asked for your feedback on proposed improvements at King Street Station, including a longer platform, more stairs and elevators, and a concourse above the platform. Over 150…

Project update

Exploring changes to the Sounder starts now!

In addition to seeking your feedback, our Sounder project team conducted an extensive technical analysis that imagined potential scenarios for the Sounder S Line. Our analysis revealed some new…

Project update

Reminder: Share your feedback by Sept. 30!

King Street Station is an important hub for thousands of weekday passengers and special events riders. The King Street Station Platform Area Improvements project aims to make the station more…

Project update

Learn more about proposed pedestrian connections to King Street Station and share your thoughts

King Street Station is an important hub for thousands of daily Sounder passengers each weekday and during special events. The King Street Station Platform Area Improvements project aims to make the…