Welcome to the Interstate Reliability Project

The Interstate Reliability Project is a 345-kilovolt (kV) transmission project in an existing transmission right-of-way. It is one of four New England East-West Solution (NEEWS) 345-kV transmission projects serving portions of New England. The Interstate Reliability Project is needed to meet the demand for electricity and support the reliable delivery of electricity to customers under many different conditions.

Project Information

The Project begins in Millbury, Massachusetts and continues along the existing transmission line rights-of-way (ROW) into North Smithfield, Rhode Island. It continues west to Burrillville, Rhode Island and into Connecticut where it will connect to a new line being constructed by Connecticut public utility, Northeast Utilities.

Join our mailing list to stay informed about project information and meetings.

Project Update Notice - Massachusetts for the weeks of June 29th and July 6th

Over the next few weeks structure installations will continue in the area off River Road in Uxbridge, south to Providence Street and Central Street in Millville, and to Rhode Island state line.

More than one-half of the wire work has been completed for the Massachusetts portion of the 366 Line. Rope and wire activity over the next few weeks will take place from Mill Street in Uxbridge, to Quaker Highway and to the location where the transmission corridor crosses the Blackstone River.

Project Update Notice - Rhode Island for the weeks of June 29th and July 6th

Structure foundation work is 75% complete. Structure installations in the right-of-way will continue through mid-July from Central Street to Pratt Pond, Connector Road, Mountain Road, East Harkness Road and Victory Highway.

Crews are installing wire from Collins Taft Road west to Hill Road and Stone Barn Road. Wire pulling will continue in July from Town Farm Road and East Wallum Lake Road towards the Clear River.

Click here for more project information.

Project Map

The Interstate Reliability Project encompasses approximately 15.4 miles of ROW in Massachusetts through the towns of Millbury (.7 mile), Sutton (6.2 miles), Northbridge (.3 mile), Uxbridge (7.6 miles), and Millville (.6 mile); and 22.5 miles in Rhode Island through the towns of North Smithfield (9.3 miles) and Burrillville (13.2 miles).

Notice: Utility rights-of-way are off limits to off-road drivers

National Grid reminds off-road drivers that utility rights-of-way are private property where unauthorized dumping and trespass by motorized vehicles is unlawful. These rights-of-way are a critical part of the company's electric and gas network. Limiting activities within the corridors protects the public, avoids damage to company facilities and supports the reliability of electric and gas service. For more information, click here.