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Mystic to Woburn Line Project

Why Are We Doing This Project?

This project will improve reliability and address the growing need for electricity in the area.

Where Is This Work Being Done?

This project includes a new 115-kilovolt (kV) underground transmission line that will connect Eversource’s Mystic Substation in Everett and Eversource’s Woburn Substation.

The line will extend approximately 8 miles between two existing substations, passing through Everett, Boston (Charlestown), Somerville, Medford, Winchester, and Woburn. The project also includes improvements within the existing fence lines of the Woburn and Mystic substations.

Information about the project is also available in Spanish, Portuguese and Haitian Creole.

map_mystic_woburn_project

Traffic Management Plans

Working in consultation with town officials, we developed Traffic Management Plans (TMPs) for the construction of the Mystic to Woburn Line Project.

The TMPs include conditions specific to routing by the Energy Facilities Siting Board (EFSB) in its decision, a detailed site plan showing underground line location, hours of construction and area-specific traffic controls. All TMPs are subject to change and may be updated often.

Due to size, TMPs may take extra time to open/download.

When is the Work Being Done?

  • File Environmental Notification Form for review under the Massachusetts Environmental Policy Act (MEPA): April 30, 2015
  • File siting petition with the EFSB: May 20, 2015
  • Petition approval by the EFSB: March 9, 2017
  • Start of construction: July 2017
  • Projected in-service date: 2023

*subject to change

About this project

  • Route length: Approximately 8 miles
  • Line voltage: 115,000-volt (345-kilovolt [kV]) underground transmission line
  • Siting review by: EFSB

Construction Updates

We're committed to keeping neighbors, businesses and community members informed on project activities during construction.

Construction began in 2017 and work is not expected to interrupt electric service to homes or businesses.

Boston | Charlestown

Near Mystic Avenue but off the street, crews are preparing for a crossing of the MBTA railway. Construction activity will occur 24 hours per day. 

Daytime construction activity in Boston will occur between 7 a.m. and 5 p.m., Monday through Friday.

Steel road plates will be used to safely secure excavated areas at the end of each work shift.

As construction continues, please note that the Boston Police Department may modify the traffic management plans based on their judgement and expertise. This includes street closures and traffic detours to ensure public safety. Please exercise caution when approaching active work areas to minimize risks to personal safety and to avoid interfering with construction.

Once work in your area is complete, crews will temporarily pave sections of the road. Final restoration activities will occur when the project is complete.

Everett

Mystic Substation

Construction started at the Mystic Substation on Alford Street in late July 2017.

All construction activities are within and around the substation. No substation expansion is planned.

Medford

Crews have completed roadway excavation for the 2022 construction season. Crews will return in 2023 to complete cable pulling and cable splicing as well as final restoration activities.

Somerville

Crews have completed roadway excavation for the 2022 construction season. Crews will return in 2023 to complete cable pulling and cable splicing as well as final restoration activities.

Winchester

Crews have completed roadway excavation for the 2022 construction season. Crews will return in 2023 to complete cable pulling and cable splicing as well as final restoration activities.

Woburn

Woburn Substation

All construction activities remaining on the Mystic to Woburn Line Project are within and around the substation fence. No substation expansion is planned.

Energy Facilities Siting Board

The Massachusetts ESFB Petition Filing is part of the regulatory review process, as defined by Massachusetts state statutes.

On March 9, 2017, we received approval from the EFSB to construct the project. See EFSB 15-03 Final Decision.

Community Outreach

Before starting construction in a community, we will mail start of construction letters to property owners along the route and conduct door-to-door outreach to nearby property owners, residents and local businesses.

Door-to-door outreach efforts for the project are currently limited to mailing letters and leaving door hangers without knocking (to avoid face-to-face communication). Full in-person communication efforts will resume when appropriate.

Have Questions?

Keeping the lines of communication open is an important part of our work in your community.

For more information about this project, please call the project information hotline at 1-833-836-0302 or email ProjectInfoMA@eversource.com.