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Stevenson to Pootatuck Rebuild Project

Rebuilding existing 115 kV transmission lines between Stevenson Substation in Monroe and Pootatuck Substation in Shelton.

Why Are We Doing This Project?

Maintaining infrastructure is one of the many ways we support the safe and secure transmission of electricity throughout the region.

Portions of this power line corridor, which include the 1580, 1560 and 1808 lines, were originally built in the 1930s. Due to their age and condition, all existing lattice towers (117 in total) will be replaced with new steel monopoles.

In select areas, additional new monopole structures will be installed within the right-of-way to meet updated engineering and electric code standards.

The location and heights of the new structures will vary depending on topography, environmental resources and other factors.

This project also proposes to replace the conductor (energized wires) with new, upgraded wire of the same voltage, and the shield wire (top-most wire) with new Optical Ground Wire (OPGW). The OPGW is designed to improve electric reliability by enabling communications between substations.

Where Is The Work Being Done?

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We're proposing to rebuild the 115-kilovolt (kV) electric transmission lines that span approximately 8 miles between our Stevenson Substation located at the Stevenson Dam in Monroe and the United Illuminating-owned Pootatuck Substation located at 14 Old Stratford Road in Shelton.

When Is The Work Being Done?

Petition Filing to the CSC: July 6, 2022

CSC Petition Approval: December 8, 2022

Start of construction: February 23, 2023

Projected in-service date*: Year-end 2023

About this project

Route length: 8.1 miles

Location: Monroe and Shelton, Connecticut

Transmission Lines: 1580, 1560 and 1808 Lines

Line voltages: 115,000-volt (115-kV) transmission line

Siting review by: The Connecticut Siting Council (CSC)

Construction Updates

Construction started with vegetation removal and site preparation, including access road and work pad construction in late February. Construction vehicles and equipment will need access to each structure or pole. Level work areas are built around each structure to provide a stable site for large equipment such as drill rigs and cranes. Gravel may be used where applicable for roads and timber matting – a flat, temporary surface – may be used to stable work areas in environmentally sensitive areas like wetlands. 

New structures will be installed starting in April 2023. A drill rig or excavator will be used to drill foundations for each new structure. New structure are delivered to the work areas and crane or bucket trucks are used to list the structures and set them into position on the foundation. 

For information on Shelton Trail impacts, please refer to The Shelton Trails Committee’s Note.

We take every safety precaution while working in local communities, and all people working on the project carry identification. The project work will not interrupt electric service to homes or businesses. Please keep in mind that the construction schedule may change due to weather or other unexpected circumstances.

Community Outreach

Beginning with municipal briefings and other community outreach efforts, we engage the community throughout the lifecycle of a project to provide information, answer questions and address concerns.

We're committed to updating neighbors, businesses and the community about construction activities in the project area.

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 1-800-793-2202 or ProjectInfo@eversource.com.