Project update: Sounder South Capacity Expansion

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Project update

Photo of King Street Station, King Street Station Platform Area Improvements

King Street Station

Share your feedback on potential King Street Station improvements

As a primary destination for Sounder riders, King Street Station can sometimes feel crowded, especially on stairs and in elevators. The current platform also isn’t long enough to serve the 10-car trains we’re planning for in the future.

As part of the Sounder South Capacity Expansion program, we’re studying how to make King Street Station better for passengers and ready to serve more Sounder riders in the years ahead. We’re looking into adding more stairs and elevators, a concourse above the platform, and more!

Visit our online open house through May 10th to view our proposals and give us your feedback. You can also join us for a drop-in session at the station:

  • Wednesday, April 27, 2:30-6:30pm
  • Monday, May 2, 2:30-6:30pm

Meet us at the Weller Street Bridge, at 4th Avenue S and Weller Street. We’ll have displays and giveaways!

The King Street Station Platform Area Improvements project is one part of the Sounder South Capacity Expansion program, approved by voters in 2016 to help improve the passenger experience on Sounder and allow us to serve more riders. Other improvements could include longer trains and additional weekday trips.

Share your feedback by May 10

Photo of fans arriving at King Street Station, King Street Station Platform Area Improvements

Fans arriving at King Street Station.

Sounder special event trains this spring

Sounder runs special service on select weekends for some sporting events, conventions and celebrations. Upcoming game trains include:

  • April 24: Seattle Mariners vs. Kansas City Royals
  • May 8: Seattle Mariners vs. Tampa Bay Rays
  • May 29: Seattle Mariners vs. Houston Astros
  • June 12: Seattle Mariners vs. Boston Red Sox
  • June 18: Sounders FC vs. Los Angeles FC

See the upcoming Sounder Event Train schedule

Photo of Sounder Train with Mount Rainer in the background

Sounder train with Mount Rainier in the background.

Sounder South Trips Restored Last Month

On March 21 four more weekday trips were restored to the S-Line, for a total of 12 roundtrips.

The restored trips are:

  • Train 1501: 6:05 a.m. Seattle to Tacoma
  • Train 1509: 3:15 p.m. Seattle to Tacoma
  • Train 1514: 7:20 a.m. Tacoma to Seattle
  • Train 1522: 4:30 p.m. Tacoma to Seattle

View the weekday S-Line schedule

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More project info:
Get in touch: or 206-689-4877