From June 14 through June 17, Amtrak will replace the movable span of the 90-year-old Thames River Bridge, located between Groton and New London, Conn.
To accommodate this project, service cancellations will be made affecting travel between Boston and New York.
Amtrak said this is the final stage of a multiyear project designed to improve the reliability of the bridge, reduce the chance of operational failures and minimize train delays.
During this four-day track outage, Amtrak said it will also perform maintenance between Boston and New Haven, Conn., that will "provide passengers with a smoother ride and significantly improve the reliability of the railroad."