MBTA Seeks Final RFPs for GLX Design-Build Contract

The Massachusetts Bay Transportation Authority (MBTA) has released the final Request for Proposal (RFP) of its Green Line Extension (GLX) Design Build (DB) contract. The RFP was offered to the three shortlisted DB teams that were identified in February 2017. Responses will be submitted by the three DB teams in September 2017.

The Final RFP includes an Affordability Limit of $1.319 billion, base scope of work, and “Additive Options,” which will only be included in the project if the Options can be completed within the Project schedule and the Affordability Limit.

“This step represents another major milestone for GLX as we move closer to the design and build phase of the project,” said GLX Program Manager John Dalton. “The MBTA has been actively engaged in pre-proposal exchanges with the three teams pursuing the design-build contract and looks forward to continuing that technical concept dialogue as each of the teams develops their responses to the Final RFP package being issued today.”

“The base scope remains seven new stations, related track and infrastructure necessary for train service, a vehicle maintenance facility, and multi-use community path,” added Dalton. “If market conditions allow, Additive Options will be included in the Design Build project scope."

The DB firms are directed to propose Additive Options in the following order as prioritized by the MBTA:

  • Platform canopies;
  • Additional elevators at select stations;
  • Public art;
  • Additional community connection to the community path located on Chester Street in Somerville;
  • Extension of the community path between East Somerville and Lechmere Stations; and
  • Enhanced Vehicle Maintenance Facility in Somerville. 

Price proposals for the competing DB teams must not exceed $1.319 billion.