The MBTA will close the Lechmere and Science Park/West End Green Line stops for six months beginning Saturday as work begins to build new elevators at the Science Park/West End stop.
Shuttle bus service will replace Green Line trolley service between North Station in Boston and the two closed stations from Saturday, April 30 through November, according to the Massachusetts Bay Transportation Authority.
The MBTA is building two new elevators at the Science Park/West End Station in Boston to improve accessibility for the disabled. The station platforms will also be widened, the platform canopies will be replaced, and the station stairways will be reconstructed.
Upgrades will also be made to the lighting, telecommunication, electrical systems, as well as fire protection and alarms and landscaping work, according to the MBTA.
The project is expected to cost about $10.4 million and the MBTA has hired Canton-based Barletta Heavy Division, Inc. for the job. MBTA Spokesman Joe Pesaturo said the federal funding is expected to pay for about 80 percent of the project.
Pesaturo said safety is the reason the Lechmere station in Cambridge must also be closed while work is underway at the Science Park/West End stop. Trolley service to the stations must be suspended while construction crews work on and around the train platforms at the Science Park/West End stop, he said.
By closing the stations, the MBTA said work will be completed six months earlier that originally anticipated and the noise from demolition work will be during the day instead of overnight. Closing the station is also expected to save money, according to the MBTA.
During the closures, the MBTA will put up signs directing customers to shuttle bus locations. The shuttle buses will not stop at the Museum of Science inbound stop during the morning peak traffic hours and the outbound stop during the afternoon peak hours.