GLX construction activities and traffic updates

Jan. 17 – Feb. 1, 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) will be 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 two weeks: Sheet pile driving will continue at the future Union Square Station and progressing along the tracks behind the Target building.

Night Work: Yes, retaining wall work will continue around-the-clock on a 24-hour basis for the next few weeks. Contractors will make efforts to minimize noise, however, this work may be disruptive at times. Efforts will be made to minimize light spillage.

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.

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

Work Planned for the next two weeks: Foundation work for the new Vehicle Maintenance Facility continues as does work on a retaining wall around the perimeter of the facility. Storm line replacement work on Third Ave. in Somerville will begin and take 2 – 3 weeks to complete. Storm line replacement work on Third Ave. in Somerville is targeted for late January/early February and expected to take 2 – 3 weeks to complete.

Near the future Lechmere station and in the MBTA Boston Engine Terminal area concrete cap pouring, steel beam placement, and deck construction for the new viaduct continues. Over East St., work continues on fully attaching the steel girders and building the elevated decking now that the steel beams are in place.

At Brickbottom Condominiums, foundation drilling for the elevated portion of the Community Path Extension is nearing completion. Upon completion of the drilled concrete shafts, concrete form work and rebar fabrication will commence in the area which is considered less disruptive.

Night Work: Yes. Expect continued night work in this area and moderate construction noise primarily due to movement of heavy machinery. Contractors will make efforts to direct lighting away from residential buildings.

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

Overview of current work in the area: Beginning Friday evening (January 10) through Sunday night/Monday Morning (January 12 & 13), GLX work crews will be relocating the first of two commuter rail tracks to its permanent location along the east side of the MBTA right-of-way. Activities will include heavy equipment movement, hauling and dumping of crushed stone, and the cutting and welding of track. Elevated noise levels are expected over night in the vicinity of the Washington Street Bridge. Overnight noise in this area may be disruptive at times primarily due to the use of gasoline powered hand tools needed to cut tracks. This work can only be performed during a complete shut-down of the commuter rail system which necessitates the nighttime and weekend timing. Contractors will make every effort to reduce the spillage of light into residential areas.

In addition to the work above, replacement of the Washington St. rail overpass, improving drainage in the area, relocating the Lowell Line Commuter Rail tracks to their permanent location, and building both noise and retaining walls are the main focus in this area.

Work Schedule: Monday – Friday, 7 a.m. to 4 p.m. with some weekends & frequent nights

Work Planned for the next two weeks: One line of commuter rail track between Washington St. and Sycamore was shifted to the east side of the alignment the weekend of Jan. 10 – 12. Work is now underway to shift the second commuter line track in this stretch by the end of the month.

Night Work: Yes. Crews will be working on the commuter line track shift between Washington St. and Sycamore as well as finishing up wall construction near Cross St. and McGrath Highway. Expect the movement of heavy machinery and elevated noise levels which may be disruptive at times.

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 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.

The GLX Project continues to work closely with the Somerville High School construction team to complete a vast amount of working place near the future Gilman Square Station. Currently, work consists of installing drainage along the tracks and building a new retaining wall on the high school side of the tracks.

Work Schedule: Monday - Friday, 7 a.m. to 4 p.m. with weekends and night work during this period.

Work Planned for the next two weeks: Drilling and placing posts for the retaining wall foundation behind Somerville High School and between the Medford St. Bridge and School St. Bridge is nearly complete. Work is also underway on a wall near the future Traction Power Substation.

In this area we are getting ready to relocate the second commuter line track to its final position on the east side of the alignment. This work is being performed between Washington St. and Sycamore.

Night work: Yes. Night work is expected during this period to support track shift operations. This work can only be performed during partial or full commuter line shutdowns thus a majority of work is performed at night and on weekends. Expect construction lighting and elevated noise levels which may be disruptive at times.

Magoun Square Station (Central to Cedar)

Overview of work in the area: While Installing new drainage and building walls (both retaining and noise walls) have been the main activities in this area throughout 2019, the current emphasis is on getting the commuter rail shifted to the east side of the alignment. 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: Monday – Friday, 7 a.m. to 4 p.m. and frequent nights and weekends

Work Planned for the next two weeks: Work during this period will include removal of remaining soil built up to support retaining and sound wall construction and earth grading of the track bed for placement of commuter line track into its final position along the alignment.

Drainage and post installation for retaining walls & noise walls is wrapping up in this section of the project. Work during this period will include building up the track bed for placement of commuter line track in its final position on the alignment. Noise wall panels will be placed between the posts later this year.

Night Work: Yes. Night work is possible in this zone to prepare for the commuter line track shift to the east side of the alignment. Elevated noise levels may be disruptive at times.

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. The site that was cleared to make way for future Ball Square Station and a Traction Power Substation is currently serving as a laydown yard for soils and bridge materials. Work in the area includes:

  • Stabilizing the soil on both sides of the bridge to support the subsequent phases of bridge construction.
  • Drilling shafts and building the abutments that will support the new Broadway Bridge
  • Developing footprint of future Ball Square Station
  • Noise wall construction between Cedar St. and Broadway
  • Small section of noise wall construction north of Broadway and connecting to existing wall at Granville Ave.
  • Install deep drainage system
  • Relocation of major utility lines beneath the tracks

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

Work Planned for the next two weeks: Drainage work on Winchester St. at Granville Ave. is scheduled to take place Jan. 18 & 19. A detour will be in effect over the weekend while we perform this work. Bike and pedestrian traffic will be able to get through along Winchester Street. For the next four weeks, drainage work will move down Granville to the rail right-of-way. Police details will be stationed in the area to ensure safety and maintain traffic flow.

Night Work: Yes. Expect night work to continue north and south of the Broadway Bridge from Granville Ave in Medford to Cedar Street in Somerville as crews advance foundations, walls, and utility relocation to prepare for the commuter rail track shift over to its permanent location. During this work, contractors will make efforts to minimize noise, however, work zones north of College Avenue 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

Work Planned for the next two weeks: Retaining wall construction and installation of drainage on the west side of the alignment continues as does work on an access road to get trucks up and down the alignment.

Night Work: Night work is not planned during this two-week period, however, this is subject to change. Whether night work is occurring or not, passing trains may sound horns before entering construction zones further south of this construction work zone.

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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