Green Line Extension (GLX)

Embarking on a Transformative Change for People Who Live and Work in the Area


Cambridge, Medford, and Somerville, MA


GLX Constructors


The Green Line Extension (GLX) project comprises light rail service on two new branches extending from Lechmere Station in Cambridge to Union Square Station in Somerville and College Avenue Station in Medford. It will include a new Vehicle Maintenance Facility (VMF) located in Somerville, MA. The tracks for the new extensions are located along the existing MBTA Lowell and Fitchburg Lines, which are currently used by commuter rail services. The GLX project also includes a start-up, testing, commissioning, and safety certification phase that will be part of the DB Contract. The project includes the following elements:

About the Project

LiRo is providing complete Quality Assurance Management (QAM) services which include, but are not limited, soil, concrete, reinforcing steel, structural steel inspections and testing. LiRo QAM services also include materials engineering and management and a complete quality auditing program.


Construction Materials Testing & Inspection