GLX construction activities and traffic updates

May 19 – June 8, 2020, construction outlook and upcoming plans. Work schedule is subject to change based on weather or other factors.

Table of Contents

Union Square Station

Overview of work in the area: Approximately 1,500 feet of wall stretching from the Prospect Street Bridge and running along the train tracks to the Medford Street Bridge (Behind Target) is being installed. Construction of the wall involves vibrating vertical metal sheets into the ground approximately 15 feet in depth. The sheets interlock with one-another forming a structurally sound retaining wall.

Work Schedule: Monday – Friday, with frequent weekends and nights.

Work Planned for the next few weeks: Station platform construction continues.

Night Work: None planned.

Lechmere Station

Overview of current work in the area: Besides building a new Lechmere Station on the north side of Monsignor O'Brien Highway, work in this area includes removing and reconstructing an elevated viaduct that will connect to the existing structure running along Charles River Dam Road. After the Lechmere Station stop, the viaduct continues behind buildings along O'Brien Highway until it splits, with one leg heading to Union Square and the other north to the future East Somerville Station and beyond. The current plan is to discontinue trolley service to the Lechmere Station on May 24. At that time, demolition will begin on weekends of the old viaduct across O’Brien Highway.

Work Schedule: Monday - Friday, 7 a.m. to 4 p.m. and most nights and weekends during this period.

Work Planned for the next few weeks: Light rail service to and from Lechmere Station will be halted on May 24th at which point MBTA will switch over to bus service. Demolition will start soon thereafter on the old Lechmere Viaduct. This work will require full or partial closures on Monsignor O’Brien Hwy. Expect detours and delays when traveling in the area.

While demolition is underway, construction of the new viaduct continues from the Gilmore Bridge to the split that heads north to the East Somerville Station and west to Union Square Station.

Night Work: Yes. Expect some construction noise primarily due to movement of heavy machinery and equipment loading and hauling off debris from old viaduct demolition.

Please note that a construction train used for excavation and hauling of materials will be active throughout the nights and weekend. This heavy piece of equipment, which is regulated by the Federal Railroad Administration, is required to use its horn for safety purposes whenever it stops and starts.

Lechmere Viaduct and Charles River Dam Road

Green Line service between Lechmere and North Stations will be interrupted for approximately one year beginning May 24, 2020, to remove, rebuild, and relocate a section of viaduct and construct a new Lechmere Station.

See the Lechmere Viaduct and Charles River Dam Road page for more details.

Vehicle Maintenance Facility (3rd Ave)

Overview of current work in the area: Construction is well underway for the buildings that make up the future Green Line Vehicle Maintenance Facility. A retaining wall is being built that encompasses the entire area footprint. Installation of new drainage and the retaining walls are near completion and the buildings are beginning to take shape.

Work Schedule: Monday - Friday, 7 a.m. to 4 p.m. and most nights and weekends in this period.

Work Planned for the next few weeks: Both the Vehicle Maintenance Facility (VMF) and Transportation Buildings continue to take shape as the framework for the VMF comes together and siding is placed on the smaller Transportation Building.

Night work: Yes. Expect construction activities nightly in this exceptionally busy area. Please note that a construction train used for excavation and hauling of materials will be active throughout the nights and weekend. This heavy piece of equipment, which is regulated by the Federal Railroad Administration, is required to use its horn for safety purposes whenever it stops and starts.

East Somerville Station (Fitchburg St. to Walnut St.)

Work Schedule: Both commuter line tracks have been shifted to their permanent position on the east side of the alignment. Work is now underway on the west side of the rail right-of-way. Work is focused on completing drainage and getting steel in place for the second half of the Washington Street Rail Overpass in order to reopen the vehicular underpass by the end of May. Work on the East Somerville Station is also progressing rapidly..

Work Planned for the next few weeks: Station foundation work and retaining wall construction continues to advance behind businesses on Joy Street.

At Washington Street the construction team is working at street level to reopen the roadway and sidewalks now that steel is in place for the rail overpass. The roadway is expected to reopen during this period. Motorists and pedestrians will notice vast improvements including a higher bridge clearance, more and better drainage, lighting, ample sidewalks and a safer bridge to cross under. While this work is finishing up, steel workers continue at the overhead rail level building the second half of the rail bridge that will carry the Green Line.

Further north, between Cross St. and McGrath Hwy., retaining wall construction continues with all steel H-piles in place along Chester Ave. Crews will begin inserting wooden lagging between these posts as they start digging away at the hillside supported by this retaining wall.

Night Work: Yes. Please note that a construction train used for excavation and hauling of materials will be active throughout the nights and weekend. This heavy piece of equipment, which is regulated by the Federal Railroad Administration, is required to use its horn for safety purposes whenever it stops and starts.

Gilman Square Station (Walnut St. to Central St.)

Overview of current work in the area: The GLX Project continues to work closely with the Somerville High School construction team near the future Gilman Square Station. Currently, work consists of modification to the School St. and Medford St. Bridges, building a Traction Power Substation near the Medford St. Bridge, and building of a new retaining wall on the high school side of the tracks.

Work Schedule: Friday, 7 a.m. to 4 p.m. and most nights and weekends during this period.

Work Planned for the next few weeks: At the Medford St. Bridge, workers are building the new abutment on the Walnut St. side of the bridge while track level workers reinforce the original abutment that will become the center pier.

On School Street Bridge, foundation drilling for the new abutment will begin on the Montrose Street side of the bridge.

At Sycamore Street Bridge, a drainpipe will be installed crossing under the tracks which will require cutting, removing, and replacing a section of track. The cutting of track requires the use of gasoline powered hand tools. Expect elevated noise levels which may be disruptive for a few hours until the track is removed.

North of School St., drilling has begun on the large retaining wall behind homes on Montrose St

Night work: Yes. Expect heavy equipment movement and the usage of the yellow Multipurpose machine in this area as materials are brought in to support area operations.

Please note that a construction train used for excavation and hauling of materials will be active throughout the nights and weekend. This heavy piece of equipment, which is regulated by the Federal Railroad Administration, is required to use its horn for safety purposes whenever it stops and starts.

Magoun Square Station (Central to Cedar)

Overview of work in the area: While installing new drainage and building walls (both retaining and noise walls), main activities in this area throughout 2019 include the current emphasis is on getting the commuter rail shifted at the northern terminus of this area and extending up to Harvard St. Later in the year, we will also start placing sound wall panels on the eastern side of the project both here and along the rest of the alignment.

Work Schedule: Friday, 7 a.m. to 4 p.m. and most nights and weekends this period.

Work Planned for the next few weeks: The biggest activity in this zone is preparing for the commuter line track shift which is scheduled to happen before the end of May. The shift starts just south of Cedar St. and near Murdock and continues up to Harvard St. A significant amount of drainage, wall construction and track bed work are being completed along the east side of the corridor to make this shift possible.

Behind Maxwell's Green on Lowell St. construction continues on the retaining wall near the future Magoun Square Station.

Night Work: Yes. Expect night work as crews place new sections of commuter line rail remove old sections once the track shift is complete. Construction lighting will be in use and noise levels from work may be disruptive at times.

Please note that a construction train used for excavation and hauling of materials will be active throughout the nights and weekend. This heavy piece of equipment, which is regulated by the Federal Railroad Administration, is required to use its horn for safety purposes whenever it stops and starts.

Ball Square Station (Cedar St. to Harvard St.)

Overview of work in the area: Construction of a longer span Broadway Bridge is the most visible work near the future Ball Square Station. In addition, work is progressing on the Traction Power Substation nearby along Boston Ave. Other work in the area includes:

  • Developing footprint of future Ball Square Station
  • Retaining & noise wall construction between Cedar St. and Broadway
  • Small section of noise wall construction north of Broadway and connecting it to an existing wall at Granville Ave.
  • Completing installation of deep drainage system
  • Relocation of major utility lines

Work Schedule: Monday – Sunday, 7 a.m. to 4 p.m. and frequent nights.

Work Planned for the next few weeks: The focus in this area continues to be on completing wall, drainage, and bridge work on the east side of the alignment to the point where the commuter line tracks can be moved in that direction which is expected by the end of May.

Now that all the steel is in place for the Broadway Bridge, the bridge deck will quickly start to take shape during this period.

Additionally, work continues on the traction power substation along Boston Ave adjacent to the future station platform.

Night Work: Yes. Expect night work to be especially active as we finish up work on the east side and prepare for the commuter rail track shift. This work includes building up the track bed and the process of laying down new track.

During this work, contractors will make efforts to minimize noise, however, noise levels may be disruptive at times. Efforts will be made to minimize light spillage into residential areas.

Please note that a construction train used for excavation and hauling of materials will be active throughout the nights and weekend. This heavy piece of equipment, which is regulated by the Federal Railroad Administration, is required to use its horn for safety purposes whenever it stops and starts.

Medford/Tufts Station (Harvard St. to Winthrop St.)

Overview of work in the area: With the commuter rail track moved to its final position on the east side of the corridor, work is now focused on the west side walls and station.

Work Schedule: Monday - Friday, 7 a.m. to 4 p.m. and frequent weekends and nights

Work Planned for the next few weeks: Retaining wall construction along Boston Ave near Tufts University continues.

Between Harvard Street and College Avenue, work will be concentrated in the vicinity of the Tufts Interlock (the track switch) along the MBTA corridor near Colby Street. Crews will be installing an under drain in that area that runs across and beneath the tracks and work will continue day and night for the next 10 days. A trench under the tracks will be done as a cut-and-cover operation meaning an open trench will be dug that requires removing and replacing a section of track. Expect elevated noise levels in this area due to the movement of heavy machinery and gasoline powered hand tools to cut the track. During this period, commuter rail service in this area will be suspended.

Night Work: Yes. Expect heavy activity in the Colby Street area and along Boston Ave between Harvard Street and Dearborn Rd. Please note that a construction train used for excavation and hauling of materials will be active throughout the nights and weekend. This heavy piece of equipment, which is regulated by the Federal Railroad Administration, is required to use its horn for safety purposes whenever it stops and starts.

Contact

Phone

Construction Hotline (855) 459-4636

24/7 Coverage

Online

Green Line Extension inquiries info@glxinfo.com

Address

200 Inner Belt Road
Somerville, MA 02143
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