Sound Transit M Street to Lakewood

Project Highlights

  • Removed more than 10 miles of existing track
  • Reconstructed the subgrade
  • Constructed 10 miles of continuous-welded rail
  • Upgraded 13 at-grade road crossings
Sound Transit
Tacoma and Lakewood, Washington
Provided By

RailWorks served as the prime contractor to upgrade track and signals infrastructure on a former BNSF freight line to meet Class 5, dual-use passenger/freight line standards. The project extends Sounder commuter service from Tacoma to Lakewood.

RailWorks and supporting subcontractors upgraded existing track and street crossings on the rail corridor from South M Street in Tacoma to Bridgeport Way Southwest near Lakewood and constructed layover tracks for train storage in the rail right-of-way adjacent to the tracks and north of Lakewood Station. All work was completed under live train operations.

To bring the line up to meet current passenger rail standards, RailWorks removed more than 10 miles of existing track, reconstructed the subgrade, and constructed 10 miles of new continuous welded rail (CWR) and jointed track, including 15 new concrete tie crossovers. In addition, the project included upgrading 13 at-grade road crossings with new concrete panels, railroad signal systems, sidewalks, curb and gutters, asphalt and traffic signal modifications.

Final design was completed September 2008 and construction began June 2009. The project was completed in 2010.