D-to-M Street Track and Signal Improvement, Sound Transit
The D-to-M Street project was the final link for the extension of Sounder commuter rail service to the South Tacoma and Lakewood Stations. The project built 1.4 miles of new track and signals between Tacoma and Lakewood, and included an elevated railroad bridge over Pacific Avenue to keep vehicle traffic flowing without interruption from trains crossing overhead. CivilTech provided shoring design services to support construction of storm and sanitary vaults, pipelines, walls, a temporary bypass road, and a steel casing lift. Shoring services included design of soldier pile walls, soldier pile tieback walls, reinforced concrete pile caps, overhead reinforced concrete struts, and at grade reinforced concrete and temporary bracing. Additionally, CivilTech performed pre-construction survey services on the Tacoma Avenue South Bridge Piers, South Yakima Avenue Bridge Piers, I-705 Bridge Piers, Jefferson Avenue pavement and retaining wall, and fourteen buildings adjacent to the construction zone for the Tacoma D-to-M Street Track and Signal Project.