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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.
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About This Project
- Route length: Approximately 8 miles
- Line voltage: 115,000-volt (345-kilovolt [kV]) underground transmission line
- Siting review by: EFSB
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.
- Route 38 (Mystic Ave.) – Somerville and Medford
- Winthrop St., South St. and Main St. – Medford
- Winchester Traffic Management Plans
When is the Work Being Done?
- Start of construction: July 2017
- Projected in-service date: 2023
*subject to change
Construction Updates
We are committed to keeping neighbors, businesses and community members informed on project activities during construction. The schedule may change due to weather or other unexpected circumstances.
We take every safety precaution while working in local communities, and all people working on the construction carry proper identification.
This work is not expected to interrupt electric service to homes or businesses.
Boston | Charlestown
Week of December 4
Sullivan Square
Near Mystic Avenue but off the street, crews are continuing a crossing of the MBTA railway. Construction activity will occur 24 hours per day.
Crossing the Sullivan Square traffic circle and along Alford Street, crews continue to restore a section of of duct bank during nighttime work hours on weeknights and daytime work hours on the weekends. Lane restrictions may be necessary.
General nighttime work hours are Monday through Friday between 7 p.m. and 6 a.m. Daytime hours are 7 a.m. to 6 p.m. Lane restrictions will be necessary and clearly posted in advance. Steel road plates will be used to safely secure excavated areas at the end of each work shift.
As construction continues, the 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
Week of December 4
Manhole Activities
Over the next two weeks, crews will return to manhole and handhole locations to install the smaller, fiber optic cable. This activity takes roughly 3 hours per location and does not require excavation. Lane restrictions may be necessary around the work zones.
General daytime work hours are Monday through Friday between 8:30 a.m. and 3 p.m. Nighttime work hours are 7:30 p.m. to 5 a.m. Lane restrictions will be necessary and clearly posted in advance. Steel road plates will be used to safely secure excavated areas at the end of each work shift.
As construction continues, the 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.
Somerville
Week of December 4
Manhole Activities
Over the next two weeks, crews will return to manhole and handhole locations to install the smaller, fiber optic cable. This activity takes roughly 3 hours per location and does not require excavation. Lane restrictions may be necessary around the work zones.
Mystic Avenue
Between the Somerville City line and Charlestown City line, crews will continue a crossing of the MBTA railway. Construction activity will occur 24 hours per day. An additional excavation crew will connect the underground crossing to a previously installed duct bank on Mystic Avenue.
General work hours are Sunday through Thursday between 8 p.m. and 6 a.m. Lane restrictions will be necessary and clearly posted in advance. Steel road plates will be used to safely secure excavated areas at the end of each work shift.
As construction continues, the 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.
Winchester
Week of December 4
There is no work in Winchester this week.
General work hours in Winchester are Monday through Friday between 7:00 a.m. and 4:00 p.m. Lane restrictions will be necessary and clearly posted in advance. Steel road plates will be used to safely secure excavated areas at the end of each work shift.
As construction continues, the 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.
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.