Tacoma Trestle

Sound Transit is replacing the wooden single-track railroad trestle east of Freighthouse Square with a new, concrete double-track bridge. The new bridge will support increased passenger and rail capacity along the corridor and improve reliability for Amtrak passenger service. The existing wooden trestle would require structural upgrades within five years to support current and increased rail operations. 

To replace the trestle, crews will demolish the current 0.65 mile-long wood structure and construct a new double-track rail bridge over South 26th and East G streets and crossover tracks. Other improvements include building an expanded passenger platform to accommodate Amtrak passenger trains, making minor street repairs, relocating some utilities, replacing retaining walls at both ends of the bridge, and upgrading railroad signals. 

In 2008, voters approved the Tacoma Trestle Track and Signal project as part of the Sound Transit 2 ballot measure. The total Tacoma Trestle project budget is $115 million (2014 dollars). In 2013, Sound Transit received a $10 million grant from the U.S. Department of Transportation's Transportation Investment Generating Economic Recovery (TIGER) program. The project will accommodate three additional Sounder south line round trips by 2017 and completion of the Washington State Department of Transportation Point Defiance Bypass Project.



Summer 2013 Conceptual engineering / environmental review

2014 Preliminary engineering/environmental: 30 percent design concept, Environmental work including SEPA, NEPA, archaeological survey and wetlands survey and impact analysis

Nov. 2014 - Winter 2016 Final design: 60 and 90 percent design including architectural elements, construction impacts and identify construction mitigation, develop business mitigation program, and public involvement

2016 - 2018 Construction

2018 Completed project, fully operational

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

  • Subscribe  to receive advance notice about public meetings and opportunities to provide input through local newspapers, blogs, project mailings and this website. 
  • Attend the open house August 11 to review the 90 percent design, hear project updates, learn how decisions will be made and provide comments. Visit the Updates & Events tab to learn more.