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The Massachusetts Bay Transportation Authority (MBTA) on May 18 will begin work to install two cross-track drainage lines beneath the Tufts interlocking in Medford in order to advance the Green Line Extension (GLX) project.
The work is necessary to accelerate construction of critical infrastructure inside a narrow rail corridor shared by the Lowell commuter-rail line and the GLX project, MBTA officials said in a press release.
The GLX project will extend MBTA’s Green Line service from Lechmere Station to Somerville, Cambridge and Medford by December 2021.
The drainage work — originally scheduled to be accomplished during weekend service diversions later this year — will require a seven-day closure of the Lowell Line between Anderson/Woburn and North stations.