After Old Colony rail service along the Greenbush corridor ended in the late 1950s, communities across the South Shore increasingly relied on congested highways for travel to and from Boston. To restore reliable transit and reduce roadway demand, the Massachusetts Bay Transportation Authority advanced the Greenbush Line Rail Restoration – its first major design–build project. The 18‑mile diesel commuter rail line delivers seven new stations, parking facilities, bridges, underpasses and a layover facility, reestablishing a vital rail connection for the region.
What challenges did STV address?
Restoring rail service along a historic corridor required rebuilding decades-old infrastructure, modernizing stations and designing systems that meet current safety, accessibility, and operational requirements. The project demanded extensive coordination across multiple communities and design disciplines, along with the reconstruction or replacement of aging bridges and grade crossings along the full right‑of‑way.
What solutions did STV deliver?
As part of a joint venture, STV served as the lead designer responsible for all engineering and architectural design and the management of all design consultants. The firm supported the full restoration of the 18-mile alignment, created new stations and parking facilities and developed a state-of-the-art signal and communications system. STV also designed the rehabilitation or replacement of 18 bridges, 29 signalized grade crossings and 19 signalized traffic intersections.
How does this project benefit the region?
The restored Greenbush Line reduces auto dependency, relieves highway congestion and improves sustainable mobility for South Shore communities. Reliable rail service supports economic growth, shortens commutes and strengthens regional connectivity to Boston.
Key stats and accolades
- 18‑mile commuter rail restoration
- Seven new stations with parking facilities
- 18 bridges and 29 signalized grade crossings rehabilitated or replaced
- First major MBTA design-build program
