MBTA New Green Line Extension 60% Complete, On Schedule

The MBTA’s Green Line Extension project trolley service extension is about 60% designed and said he has not seen signs of possible snags on the horizon.

The Green Line Extension project manager, also said that construction work is beginning to pick up ahead of the planned December 2021 grand opening.

Dalton said there are about 320 people working full-time on the roughly $2.3 billion, 4.7-mile light rail extension from Cambridge to Medford – 95 from the MBTA and its consultants and another 225 from the company hired to design and build the new line.

“That number will grow,” Dalton said. “We’ll see that number grow, certainly, over the next six to 12 months.”

Dalton said the bulk of the construction-related work taking place now is related to drainage infrastructure, retaining walls and noise barriers. Demolition of buildings will begin later this month, he said, and the impacts of the construction will soon become more evident.

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