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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.
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.

- Segment 1 is located between the Beebe River Substation in Campton and the North Woodstock Substation in Woodstock.
- Segment 2 is located between the North Woodstock Substation in Woodstock and the Streeter Pond Tap in Sugar Hill.
- Segment 3 is located between the Streeter Pond Tap in Sugar Hill and the Whitefield Substation in Whitefield.
This transmission line crosses the following roads:
Campton
Route 175, Sunset Circle, Route 49, Southmayd Road, Owl Street
Thornton
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
Woodstock
Avery Farm Road, Tripoli Road, Cox Farm Road, Interstate 93, Route 175, US Route 3, Crooked Pike Road, Route 112
Lincoln
None
Easton
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
Bethlehem
Interstate 93, US Route 302, Stoney Acres Drive, Route 116
Dalton
Faraway Road, Route 142, Mirror Lake Road
Whitefield
Forest Lake Road, Evergreen Drive, Mt Holly Heights
When Is The Work Being Done?
- Local permitting: Second quarter 2023 through second quarter 2024
- State and Federal permitting: Second quarter 2023 through second quarter 2025
- Construction Start Date: Second 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:
- Door-to-door outreach
- Site visits (upon request)
- Virtual meetings (upon request)
- Signage placed strategically near construction areas or in residential areas
- Regular field presence to ensure the safety of our customers, nearby property owners, and our construction crews
- Read the project introduction letter
- Read the project introduction fact sheet
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.
We remain committed to prioritizing public health as well as the health of employees and contractors during COVID-19. All Eversource personnel follow applicable health and safety guidelines to help prevent the spread of COVID-19.
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 NHProjectsInfo@eversource.com.