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Beebe River to Whitefield (X178) Line Rebuild Project

Why Are We Doing This Project?

Recent inspections and engineering analysis of the X178 transmission line revealed that many of the structures are in poor condition due to their age, woodpecker damage, insect damage, and pole rot.

The X178 transmission line currently has 594 structures. Of these, 24 are already weathering steel and will not be replaced. This project will replace the remaining 570 structures with weathering steel structures of a similar design. In addition, the conductor (wire) is being replaced, and fiber optic cable, known as Optical Ground Wire (OPGW), is being installed the entire length of the line.

This maintenance is part of our ongoing investments to deliver reliable energy to our customers and communities.

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Where Is The Work Being Done?

This work will take place within the existing right-of-way (power line corridor) of the X178 Line, a 115-kilovolt (kV) transmission line built in 1969 and 1985 that is 49 miles long. Due to the length of the line, this project will be split into three segments with overlapping construction schedules in order to complete work in a safe and efficient manner.

This transmission line crosses the following roads:


Route 175, Sunset Circle, Route 49, Southmayd Road, Owl Street


Tame Road, Powder Lane, Route 175, Mountain River East Road, Benton Road, Sunrise Hill Road, Old Sawmill Road, Millbrook Road, Waterthorn Road, Barnard Road, Clement Road, Star Ridge Road, Julies Drive, Thornton Gore Road, Sellingham Hill Road


Avery Farm Road, Tripoli Road, Cox Farm Road, Interstate 93, Route 175, US Route 3, Crooked Pike Road, Route 112




Route 116, Ginger Bread Road, Gibson Road, Sugarbush Lane

Sugar Hill

Dyke Road, Presby Road, Hadley Road, Pearl Lake Road, Route 117, Center District Road, Blake Road, Crane Hill Road, Street Pond Road, Route 18


Interstate 93, US Route 302, Stoney Acres Drive, Route 116


Faraway Road, Route 142, Mirror Lake Road


Forest Lake Road, Evergreen Drive, Mt Holly Heights

When Is The Work Being Done?

  • Local permitting: Third quarter 2023 through second quarter 2024
  • State and Federal permitting: Third quarter 2023 through second quarter 2025
  • Construction Start Date: Third quarter 2024 (anticipated)    
  • Projected In-Service Date: Fourth quarter 2026 (duration includes all three segments)

Restoration will be ongoing during construction for stabilization to the extent it's possible.

This schedule is weather dependent and subject to change

Community Outreach

We're committed to engaging municipal officials, residents, businesses, community groups and other stakeholders about upcoming project activities through municipal briefings, mailings, site meetings, virtual meetings and door-to-door outreach, while adhering to COVID-19 social distancing and other related health and safety guidelines.

We utilize a variety of outreach methods to ensure that all customers and property owners along our transmission lines receive adequate and timely information about our projects. For this Project, we will be sending periodic updates as letters mailed directly to all stakeholders, as well as a combination of the following additional methods:

Power Grid 101: How Eversource’s Electric Transmission System Delivers Energy to Your Home

Commitment to Safety

We take every safety precaution while working in local communities, and all people working on the construction project carry identification. The project work will not interrupt electric service to homes or businesses.

Have Questions?

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

For questions or more information about the project, please contact us at 888-926-5334 or