The Massachusetts Bay Transportation Authority (MBTA) announced several planned system upgrade construction projects are being accelerated, shortening some timelines by as much as 11 months for certain projects. System upgrade work to improve reliability for riders on the Green, Red, and Orange Lines that was previously scheduled to take place only during limited overnight hours will now take place during entire weekends, requiring shuttle service around certain stations.

The accelerated work plans approved by the Fiscal and Management Control Board will deliver benefits to riders significantly faster and allow T crews to undertake multiple projects at the same time as opposed to performing projects one after the other during the limited overnight hours.

In June, the Baker-Polito Administration announced as part of the $8 billion, five-year plan to modernize the MBTA, transportation officials would speed up planned work to improve the system faster. MBTA officials also announced they plan to undertake additional acceleration plans in the near future.

“Riders deserve a reliable, safe transportation system and while we understand this accelerated plan will be inconvenient for some riders, we believe these temporary diversions are necessary to improve the system that has been neglected for decades,” said Gov.Charlie Baker. “The MBTA will continue to evaluate upcoming planned projects for this fall and next year for additional opportunities to accelerate work where possible.”