Tacoma Trestle

Photo of Tacoma trestle with Sounder train

The Tacoma Trestle project was approved by voters in 2008 as part of the Sound Transit 2 system expansion plan. Sound Transit is replacing the 100-year-old wooden single track railroad trestle just north of Freighthouse in Tacoma with a modern, double-track bridge.

The new bridge will provide increased capacity and improved reliability for additional Sounder and Amtrak passenger trips as well as Tacoma Rail freight movements. The Tacoma Trestle project includes:

  • Demolishing and removing the existing 0.65-mile single-track bridge and trestle
  • Constructing a new double-track rail bridge and crossover tracks
  • Upgrading the embankment along the trestle
  • Upgrading railroad signals
  • Making minor street reconstruction and utility relocations along with studying the feasibility of building an extended passenger platform

Recently secured grant funding will allow Sound Transit to advance completion from the original target of 2023 to 2017, which will help meet the need for increased rail capacity in the corridor. 

Amtrak connections at Freighthouse Square

The Washington State Department of Transportation (WSDOT) is developing design plans for the Point Defiance Bypass project that will allow Amtrak trains to serve Freighthouse Square. The state's current schedule would reroute all Amtrak service by late 2017, a move that would consolidate all passenger rail service in one location.  

At the request of the City of Tacoma to WSDOT, Sound Transit is working with the state to determine the feasibility of incorporating design and construction of an extended platform into the Trestle project. This extended platform would accommodate the longer Amtrak trains without impacting nearby streets. It is not needed for Sounder service.

Sound Transit does not have funding or authority to build new station platforms.  If the new platform design is feasible, its design and construction would be the responsibility of another party.


Project Timeline
Summer 2013 Conceptual engineering / environmental review
2014 Preliminary engineering authorization 
2015 Final design
2016 Construction
2017 Completed project, fully operational

Outreach staff

Erin Hunter Erin Hunter
Title: Community Outreach Corridor Supervisor
Office Phone: 206-370-5511
Email Address: erin.hunter@soundtransit.org

Latest news

Open house - Tacoma Trestle Track & Signal Project
Nov 13, 2014: Review & comment on conceptual design, timing and next steps

Positive train control equipment installation update
Aug 11, 2014: Additional safety technology equipment being installed between Tacoma and Lakewood

Tacoma Trestle Track and Signal SEPA Checklist
Jul 16, 2014: State Environmental Policy Act checklist for the Tacoma Trestle Track and Signal project.

Tacoma Trestle Track and Signal Determination of Nonsignificance (DNS)
Jul 16, 2014: Determination of Nonsignficance (DNS) issued for the Tacoma Trestle Track and Signal project

Display Boards - Tacoma Trestle Track & Signal Project Open House
Feb 11, 2014: Display boards for the Tacoma Trestle track & signal project open house

Tacoma Trestle Design

give input

Give us your feedback on your preferred column design for the Tacoma Trestle! Your feedback will help inform the new bridge design.

Tacoma Trestle Design Survey

Get involved

Sound Transit is committed to communicating with Tacoma residents and businesses about the project and providing meaningful opportunities to get involved. You can:

  • Receive advance notice about public meetings and opportunities to provide input through local newspapers, blogs, project mailings and this website. Subscribe
  • Attend public meetings to hear project updates, learn how decisions will be made and provide comments.