Sounder south maintence base


To ensure a safe and comfortable ride for Sounder passengers, Sound Transit is building a maintenance base to service its growing fleet of Sounder trains.

Sound Transit originally designed this project to maintain 81 rail vehicles, but with voter approval in November 2016, the Sounder fleet will expand to 106 by 2040, requiring a larger maintenance facility. Sound Transit released a State Environmental Policy Act (SEPA) amendment for the expanded project in May 2018.

Sound Transit will build the maintenance base on the Sounder Rail Yard site between Steilacoom Boulevard Southwest and 100th Street Southwest in the City of Lakewood. The base contains maintenance bays, material storage areas, and offices and facilities for employees. Sound Transit's contractor will deliver this project as a design-build contract and is expected to open in 2023.

Sounder South runs 13 round-trips between Tacoma Dome and King Street Station in Seattle, eight of which also serve South Tacoma and Lakewood. Sounder also offers special event service to select Seahawks, Sounder and Mariners games.