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GLX construction activities and traffic updates

April 10 – 30, 2021 - construction outlook and upcoming plans. Work schedule is subject to change based on weather or other factors.

Table of Contents

School Street Pedestrian / Bike Detour Routes

School Street Bridge Pedestrian Bridge will be closed January 18 through spring of 2021.

For Ped / Bike Traffic headed east:

  • School St. to LEFT on Madison
  • RIGHT on Sycamore St. to
  • Right on Richdale Ave to
  • LEFT on School St.

For Ped / Bike Traffic headed west:

  • School St. to RIGHT on Richdale Ave
  • LEFT on Sycamore St.
  • LEFT on Madison St.
  • RIGHT on School St.

Additional Resources

Union Square Station

Overview of work in the area: Station and support facility construction is well underway not far from the Prospect St. bridge. The steel frame now in place for the station platform awnings is highly visible at this stage. Between this area and where the track runs under McGrath Hwy., the GLX project has been building retaining walls along the track to support the new light rail track.

Work Schedule: Monday – Friday, with frequent weekends.

Work Planned for the next few weeks: Work continues on and around the Union Square Station platform and support structures. This includes electrical work and building out all the infrastructure finishes associated with the station platform. A signal bungalow has been installed and systems installation that supports light-rail trolley operations such as catenary power, track switches, and signalization is ongoing.

Night Work: No night work is anticipated at this time.

Lechmere Station

Overview of current work in the area: Work continues on building a new, elevated Lechmere Station on the north side of Monsignor O'Brien Highway. Work on a new viaduct from the Gilmore Bridge to the new Lechmere Station is nearing completion. Temporary bus service continues to and from North Station in place of trolley service while construction is underway

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

Work Planned for the next few weeks: Work continues on the Lechmere Station platform, headhouses and central instrument house. Track is now in place on the viaduct and systems installation is ongoing. Installation of the Lechmere platform canopy steel is nearly complete and installation of canopy roof panels will follow. Glass panels around the station elevator towers are being installed which include custom artwork developed for the station as an Additive Option contained in the Design-Build procurement process four years ago.

Near the Boston Engine Terminal area and Brickbottom Condominiums, multiple construction operations continue at both ground and viaduct levels. This work includes placing track on remaining portions of the viaduct, placing track leading to the Vehicle Maintenance Facility (VMF), and systems installation which includes placement of the third of 9 signal bungalows. Work on drainage, noise wall construction, ramp construction, catenary pole installation and Community Path construction is also progressing.

Expect periodic use of vibrating rolling equipment on the ground level and ramps to compact soil and aggregate prior to track placement. Vibration from this equipment can be felt at distances but is within carefully measured and conservative geotechnical thresholds. Waterproofing, ballast placement, and track work is the continued focus on the viaducts.

Night Work: Night work is possible in this area.

Lechmere Viaduct and Charles River Dam Road

Green Line service between Lechmere and North Stations was suspended on May 24, 2020, to remove, rebuild, and relocate a section of viaduct and construct a new Lechmere Station. Replacement bus service is being provided for the duration of the service interruption.

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 advancing on the future Green Line Vehicle Maintenance Facility ("VMF") which serves as the main location for trolley car maintenance and service. The superstructure of the massive building is virtually complete and outfitting the interior of the building is well underway. The installation of access and storage track within 8-acre VMF yard is nearly complete. Work is actively underway to have this building tested, commissioned, and ready to service trains in the coming months.

Work Schedule: Monday - Friday, 7 a.m. to 5 p.m. and most nights and weekends in this period.

Work Planned for the next few weeks: Track placement around the VMF yard is nearly complete and track-leveling equipment is being used to finely tune the track to its final alignment and elevation. Expect to see DC power lines attached to the overhead contact system poles in the area soon. Inside the VMF building, the work of outfitting the building with equipment to service Green Line trains continues. Inside and around the Transportation Building, signal and systems work continues as the building also nears operational readiness.

Night work: None planned during this period.

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

Work Schedule: At the street level, work is focused on completing the south sidewalk at Washington St. At the site of the future station, work is advancing on the platform. Heading north along the GLX alignment toward Walnut St, track, systems, and wall construction work continues.

Work Planned for the next few weeks: With the steel canopy in place on the station platform, the more detailed work involved in outfitting the station continues.

North of Washington St., retaining wall construction remains active up to Walnut St. as does systems installation and placement of barrier between the commuter rail and Green Line tracks. Expect to see track bed preparation and rail placement during this period.

Night Work: Yes. Night work is likely in this 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.

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

Overview of current work in the area: Currently, work continues to advance on modifications to the School St. and Medford St. bridges, building a Traction Power Substation, building of a new retaining wall on the high school side of the tracks, and construction of a new Green Line station.

Work Schedule: Monday - Friday, 7 a.m. to 5 p.m., most weekends and frequent nights during this period.

Work Planned for the next few weeks: Work outfitting the Gilman Square Station platform will continue during this period.

At both Medford St. and School St. bridges deck construction will continue as will relocation of utilities along School St.

At the School St. Bridge, steel has been placed across the open span and deck work is advancing quickly on the new section. On either side of the bridge, utility work continues.

Retaining wall construction between Walnut St. and Central St. has advanced with a majority of these wall sections in place. Backfilling the space between the walls is advancing along with the grading and wall work necessary to build the Community Path. A low-rise retaining wall is also being installed between the commuter rail and GLX tracks between Medford St. and Sycamore St. This work is being done at night to take advantage of commuter rail outages.

At track level, systems installation will continue throughout this segment of the job

Night work: Yes. Retaining wall work along the rail corridor sides and between tracks is scheduled to take place at night during this period. Noise wall panel placement is also likely during this period along with trenching operations associated with systems installation.

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: Work on the west side of the alignment is advancing well with the installation of retaining walls, drainage, and station construction. In this segment, project neighbors are seeing the Magoun Square Station take shape near Lowell Street. On the opposite side of the alignment, expect to see the last of retaining and noise wall panels being inserted where steel H-piles are already in place.

Work Schedule: Monday - Friday, 7 a.m. to 5 p.m., most weekends and frequent nights this period.

Work Planned for the next few weeks: Work will continue to advance at and around the Magoun Square Station. Expect to see steel structures for a walkway and headhouse to the station take shape next. South of the station, work on the Community Path is advancing near the existing path terminus. Several concrete sections were poured in early March.

Modifications to the Lowell St. and Cedar St. bridges will continue at track grade.

Retaining wall work also continues throughout this section.

Night Work: Yes. Night work is scheduled for Friday, April 9 through Saturday morning, April 10 as work crews erect the elevator shaft on the Magoun Square Station platform. Also, work associated with excavation and placement of steel noise wall panels is possible.

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: At Ball Square, work on the future Green Line Station is very visible as is work on the nearby traction power substation. A few punchlist items are being addressed to finalize completion of the Broadway Bridge. Other work in the area includes:

  • Retaining wall construction between Cedar and Broadway
  • Completion of a small section of noise wall construction north of Broadway and connecting it to an existing wall at Granville Ave.
  • Installation of new rail signaling equipment
  • Track bed construction and light rail placement

Work Schedule: Monday – Sunday, 7 a.m. to 5 p.m. and frequent nights.

Work Planned for the next few weeks: The steel superstructure for the station platform and roof panels are now in place as work connecting the station infrastructure continues. Light-rail Systems installation is active in the area as is drainage and utility work and outfitting the traction power substation.

Expect work building the retaining wall between Cedar St. and Broadway to continue.

Night Work: Night work is possible during this period.

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 5 p.m. and frequent weekends and nights

Work Planned for the next few weeks: Crews will continue to work on the station platform and massive retaining wall along Boston Ave while also installing systems related equipment.

Night Work: Yes. Work on a retaining wall near the Cummings Center and College Ave. Bridge will be taking place at night. This work is expected to continue intermittently through the end of April.

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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