MBTA issues RFP for Green Line light-rail extension

The Massachusetts Bay Transportation Authority (MBTA) late last week released a request for proposal (RFP) to three design-build teams selected to be considered for the Green Line light-rail extension project.

The draft RFP includes an "affordability limit" of $1.3 billion and outlines the base scope of work, MBTA officials said in a press release. The request also details "additive options" if the firms can complete them within the project schedule and budget.

Those options include platform canopies, additional elevators at certain stations, public art and an enhanced vehicle maintenance facility in Somerville, Mass.

Price proposals for the completing design-build firms are due in September. A final RFP will be issued in May after the MBTA receives feedback from the firms on the draft request.

The estimated cost to build the extension is $2.3 billion. The project involves extending the MBTA's Green Line into Somerville and Medford, Mass.

The MBTA last month picked the three firms to compete for the project. The three teams are:

• GLX Constructors (Fluor Enterprises Inc., The Middlesex Corp., Herzog Contracting Corp., and Balfour Beatty Infrastructure Inc.);
• Green Line Partners (The Lane Construction Corp., Salini Impregilo S.p.A., Judlau Contracting Inc., and the LMH-C.M.C di Ravenna joint venture); and
• Walsh Barletta Granite JV (Walsh Construction Co. II LLC, Barletta Heavy Division Inc., and Granite Construction Inc.).