Sounder South Capacity Expansion
Improvements to serve more Sounder South riders

News and updates

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Sounder South Capacity Expansion Online Open House

The Sounder South Capacity Expansion Project wants to hear from you! We have launched our first outreach effort for 2020 with our online open house. Learn about potential investments in Sounder…

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Reminder: share your feedback on Sounder South Capacity Expansion draft plan by Feb. 6

Last fall we shared with you options for expanding capacity on Sounder South to serve growing demand over the coming years. We’ve incorporated your feedback along with results of technical analysis…

Learn about potential investments in the Sounder South line

Sounder has provided reliable, traffic-free service for Puget Sound residents for nearly 20 years. As highway congestion has more than doubled across the region, commuters are looking for other…

Sounder South Hero image riders exiting the train

Draft plan for expanding Sounder South capacity released

Last fall we shared with you options for expanding capacity on Sounder South to serve growing demand over the coming years. We’ve incorporated your feedback along with results of technical analysis…

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What we heard during fall outreach

In September 2019, Sound Transit hosted an online open house and 11 drop-in sessions to share information on possible Sounder South improvements and gather community feedback on priorities. We…

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Thanks for your input!

Thanks to everyone who joined us in September to learn about and share your priorities for expanding capacity on Sounder South. We received over 2,500 survey responses – thanks for your questions and…

Passengers board a Sounder train.

Sounder South Capacity Expansion online open house

We've studied several options for adding capacity to the South Sounder line, now we want to hear from you. Beginning Sept. 10, please take part in an online survey to let us know what are the best…

Sounder South Capacity drop-in session, Puyallup Farmer's Market

Investments are coming to Sounder South: Attend a drop-in session this September. An online open house will be available Sept. 10-24. Visit the project website

Sounder South Capacity drop-in session, Kent Station

Investments are coming to Sounder South: Attend a drop-in session this September. An online open house will be available Sept. 10-24. Visit the project website

Sounder South Capacity drop-in session, Tukwila Station

Investments are coming to Sounder South: Attend a drop-in session this September. An online open house will be available Sept. 10-24. Visit the project website