New York, New Haven & Hartford Railroad, Groton Bridge, Spanning Thames River between New London & Groton, New London, New London County, CT

Significance: The Groton Bridge is a Strauss heel trunnion bascule bridge. It is significant as part of the transportation link in the shoreline route of the New York, New Haven and Hartford Railroad, and as an individual engineering solution to the need to provide dependable rail service while accommodating river navigation. Survey number: HAER CT-25 Building/structure dates: 1919 Initial Construction