Railroad bridges in Connecticut

The Derby–Shelton Bridge is a road crossing over the Housatonic River in the U.S. state of Connecticut, connecting the cities of Derby and Shelton. It connects Route 34 in downtown Derby with Route 110 in downtown Shelton. The bridge and approaches are designated but not signed as SR 712. The current bridge (number 01659) was built in 1918 by the Connecticut State Highway Department to replace a former steel-arch bridge built in 1891 known as the Huntington Bridge. Prior to that, an even older wooden covered bridge (built in 1857) was at this site. The Derby–Shelton Bridge used to carry two street railway tracks until the 1930s.

Niantic River Bridge, also known as Amtrak Bascule Bridge No. 116.74, is a railroad bridge carrying Amtrak's Northeast Corridor line across the Niantic River between East Lyme and Waterford, Connecticut. It is a drawbridge with a bascule-type draw span. A new bridge was constructed in 2012 to replace the former span built in 1907. It opened on September 8, 2012. Related construction work finished in June 2013.

The South Norwalk Railroad Bridge is an 1895 bridge in Norwalk, Connecticut. It carries the four sets of Metro-North railroad tracks across the busy intersection of Main Street and Washington Street in the South Norwalk section of the city. The bridge is adjacent to the South Norwalk Switch Tower Museum, which showcases the railroad switch tower where tracks were physically switched at the intersection of the Danbury Branch and the New Haven Line.

The Derby–Shelton Bridge is a road crossing over the Housatonic River in the U.S. state of Connecticut, connecting the cities of Derby and Shelton. It connects Route 34 in downtown Derby with Route 110 in downtown Shelton. The bridge and approaches are designated but not signed as SR 712. The current bridge (number 01659) was built in 1918 by the Connecticut State Highway Department to replace a former steel-arch bridge built in 1891 known as the Huntington Bridge. Prior to that, an even older wooden covered bridge (built in 1857) was at this site. The Derby–Shelton Bridge used to carry two street railway tracks until the 1930s.

Shaw's Cove Bridge is a swing bridge in New London, Connecticut built in 1984, replacing a similar bridge built in 1913. The span carries railroad tracks used by Amtrak for their train along the Northeast Corridor while allowing boat traffic to go through.

The Farmington River Railroad Bridge spans the Farmington River in Windsor, Connecticut, just west of Palisado Avenue and north of Pleasant Street. It carries two tracks of the main railroad line between Hartford, Connecticut and Springfield, Massachusetts. Built in 1867, it is one of the state's finest examples of a stone arch railroad bridge. It was listed on the National Register of Historic Places in 1972.

The Rapallo Viaduct is a buried railroad trestle in East Hampton, Connecticut which carries the Air Line Trail across Flat Brook.

The River Road Stone Arch Railroad Bridge is a historic bridge carrying the former Air Line Railroad right-of-way over River Road in Salmon River State Forest in Colchester, Connecticut. Built in 1887, it is a well-preserved example of a period masonry railroad bridge, built as part of a state-mandated program for the reduction of the number of grade crossings in the state. The bridge was listed on the National Register of Historic Places in 1986.

The Lyman Viaduct is a buried railroad trestle built over Dickinson Creek in Colchester, Connecticut, in 1873. Along with the nearby Rapallo Viaduct, it is one of the few surviving wrought iron railroad trestles from the first generation of such structures. It was built for the Boston and New York Air-Line Railroad, whose successor, the New York, New Haven and Hartford Railroad (NYNH&H), buried it in sand rather than replacing it with a stronger structure. The bridge was added to the National Register of Historic Places in 1986 since it is capable of providing detailed information about construction methods of the period. The bridge now carries the multi-use Air Line State Park Trail.

The Mianus River Railroad Bridge, also known as the Cos Cob Bridge, is a bascule drawbridge built in 1904 over the Mianus River, in Greenwich, Connecticut. It was listed on the National Register of Historic Places in 1987. The bridge carries the Northeast Corridor, the busiest rail line in the United States, both in terms of ridership and service frequency. It is operated by the Metro-North Railroad, successor to Conrail, Penn Central, and the New York, New Haven and Hartford Railroad, which erected it, and is owned by the Connecticut Department of Transportation.