Sounder Yard Expansion

The Sounder Yard Improvement projects are part of the ST2 system expansion plan approved by voters in 2008. The improvements are being made to accommodate additional Sounder Train service starting in late 2017.

Sounder Yard Expansion (Third Track)
The existing Lakewood rail yard site will be modified to store the seven train sets needed for additional Sounder train service beginning late 2017. These improvements will be made within the railroad right-of-way between Steilacoom Boulevard Southwest and 100th Street.

Proposed improvements include:

  • Construction of a third layover/storage track
  • Upgrades to train crew accommodations
  • Addition of 45 employee parking spaces
  • Updates to existing yard roadways, the site lighting security system, and drainage facilities 

Sound Transit published an Environmental Checklist under the State Environmental Policy Act (SEPA) on November 8, 2013. Based on the environmental review, Sound Transit has determined that the proposal does not have probable significant adverse environmental impacts on the environment and has issued a Determination of Nonsignificance (DNS). The checklist is available for public and agency comment . The comment deadline is November 22nd. Please see the DNS for additional information regarding the SEPA process, how to comment, and requirements for filing SEPA appeals. To view all documents related to this project, please see the Sounder Yard Expansion project documents archive page

Construction is expected to begin in 2016 and the project completed by late 2017