GLX construction activities and traffic updates

September 21 - October 11, 2019, 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: Site prep work at the future station location

Work Schedule: Monday – Friday, 7 a.m. to 4 p.m.

Work Planned for the next two weeks: Work continues along the rail line behind the Target on Somerville Ave. Crews continue to build the foundation for a new, mechanically stabilized earth (MSE) wall

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 constructing 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.

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

Work Planned for the next two weeks: Foundation work for the new Vehicle Maintenance Facility on Third Ave. in Somerville continues. The most noticeable work this month will be on a retaining wall that surrounds the facility.

At the MBTA Boston Engine Terminal in the Inner Belt area, steel beams continue to be placed atop concrete pier caps creating a clear framework for this part of the viaduct.

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: Replacement of the Washington St. rail overpass, improving drainage in the area, 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: At the Washington St. rail overpass crews continue to work day and night building the bridge deck

Between Cross St. and McGrath Highway work continues on a retaining wall along Avon Place and Auburn St. This wall is being built just in front of the existing concrete "green wall". Drainage work is also active here.

In the area between McGrath Hwy. and Walnut St., we will start removing the remaining steel sheeting that was originally left in place when noise wall post installation was performed earlier in the year.

Night Work: Yes. Crews will continue working nights at the Washington St. overpass for the foreseeable future.

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 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: We have elevated the grade on the Somerville High School side of the tracks in order to get a drill rig in place to start work on the foundation for a retaining wall. This drilling will continue for several weeks.

On the Medford St. side of the tracks, excavation continues on a deep reinforced trench where we are placing a 60-inch concrete pipe. This new stormwater drainage runs all way to Central St. where it will tie into the storm line installed earlier this year near Rogers Foam.

Behind homes on Richdale Ave & Montrose, between School St. and Sycamore St., crews continue to place 60-inch concrete stormwater line and build the noise wall. The walls crew and drainage team are about to swap positions in this area. Expect to see the earthen berm moved toward School St. to support continued drilling for walls. Drainage installation continues north of Sycamore too.

Night work: Yes. Expect night work between School St. and Rogers Foam as drainage crews install lagging (temporary steel walls) for the utilities trench box that holds the 60-inch concrete pipe that will eventually be under the Commuter Line track once relocated.

Magoun Square Station (Central to Cedar)

Overview of work in the area: Installing new drainage and building walls (both retaining and noise walls) are the main activities currently in this area.

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

Work Planned for the next two weeks: Post placement for a retaining wall continues behind the Somerville Department of Public Works building.

Night Work: None planned at this time but active night work is ongoing the north and south of this location.

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: Typically, Monday – Saturday, 7 a.m. to 4 p.m. and frequent weekends and nights.

Work Planned for the next two weeks: This construction zone is tight as drilling the foundation for the new Broadway Bridge continues. Additionally, work continues on two stormwater manholes near Granville and Newburn that will tie in all surrounding stormwater drainage. Expect concrete trucks in this area as these large manholes continue to be built. Once drainage work is completed (which is outside of this two-week look ahead), we will finish up noise and retaining wall construction.

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.

College Ave. Station (Harvard St. to Winthrop St.)

Overview of work in the area: Installing new drainage and building walls (both retaining and noise walls) are the main activities currently in this area.

Work Schedule: Mon – Sat, 7 a.m. to 4 p.m. and frequent weekends & nights

Work Planned for the next two weeks: Beginning the weekend of Sept. 27 through the mid-October work will be focused on placing commuter line track down into its final configuration on the east side of the alignment. This work will take place during day, night and weekend shifts. Once the track is in place and tested, commuter line rail will be switched over to this new permanent alignment.

An earthen ramp has been built on the west side of the alignment (Boston Ave. side) to support a drill rig. Foundation drilling is now underway for a retaining wall just north College Ave. Foundation and wall work in this area will continue for the foreseeable future to make way for the future College Avenue Station.

Night Work: Yes. Expect night work to continue north of College Ave. as crews finalize wall work and place the new commuter rail track. On Friday night, September 20, and continuing around-the-clock throughout the weekend, crews will begin breaking away rock in the way of future utilities along the rail alignment. Contractors will make efforts to minimize noise, however, work zones north and south 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.

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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