In 2024, National Grid began a multi-year effort to enhance transmission reliability by replacing existing structures along an approximately 20-mile electric transmission corridor. The work began in Somerset and has been steadily progressing northbound toward Bridgewater.

Construction activities have been progressing steadily on segments V5 and U6 and is anticipated to be completed in 2030. This portion of the project runs parallel to the recently completed transmission line and will proceed southbound—starting in Raynham and Bridgewater, and continuing through to Somerset.

Key Facts

The Somerset to Bridgewater Reliability Project extends from the Pottersville Substation (off Riverside Avenue in Somerset) to the Bridgewater Substation (off Elm Street in Bridgewater). Key activities include:

• Site preparation and vegetation management.
• Use and improvement of existing access roads and work pads.
• Installation of new access roads and work pads where necessary.
• Replacement of aging wooden structures with new light-duty galvanized steel structures.
• Installation of new optical ground wire (OPGW) to enhance system reliability and enable substation communications.
• Installation of new conductor and structure hardware.
• Minor shifts in structure locations to comply with updated engineering standards and better protect environmental resources.
• Project completion is expected by 2030.
  
  

Project Benefits

• Improved transmission reliability in your area
• Build capacity and resilience to National Grid’s transmission plan
  
  

What to Expect During Construction

If you live or own property near the transmission corridor, you may observe the following:

• Increased construction activity and the presence of crews and equipment.
• Delivery of materials and use of heavy machinery.
• Construction-related noise and occasional traffic controls at access points.
• Reuse of access roads from the first phase of the project, with repositioned work pads to accommodate the new V5/U6 structure placements.
• National Grid and its contractors remain committed to completing this work safely, efficiently, and with minimal disruption to the community.