Niantic River Bridge, also known as Amtrak Bascule Bridge No. 116.74, is a railroad bridge carrying Amtrak

Amtrak

The National Railroad Passenger Corporation, doing business as Amtrak , is a government-owned corporation that was organized on May 1, 1971, to provide intercity passenger train service in the United States. "Amtrak" is a portmanteau of the words "America" and "track". It is headquartered at Union...

's Northeast Corridor

Northeast Corridor

The Northeast Corridor is a fully electrified railway line owned primarily by Amtrak serving the Northeast megalopolis of the United States from Boston in the north, via New York to Washington, D.C. in the south, with branches serving other cities...

 line across the Niantic River

Niantic River

The Niantic River is a mainly tidal river in eastern Connecticut. It is crossed by the Niantic River Bridge carrying Amtrak's Northeast Corridor, as well as highway bridges carrying Connecticut Route 156 and US-1. It separates the towns of East Lyme and Waterford. The river is long....

 between East Lyme, Connecticut

East Lyme, Connecticut

East Lyme is a town in New London County, Connecticut, United States. The population was 18,118 at the 2000 census. The latitude of East Lyme is 41.353N...

 and Waterford, Connecticut

Waterford, Connecticut

Waterford is a town in New London County, Connecticut, United States. It is named after Waterford, Ireland. The population was 19,152 at the 2000 census. The town center is listed as a census-designated place .-Geography:...

. The main bridge structure was built by the King Bridge Company

King Bridge Company

The King Iron Bridge & Manufacturing Company was a late-19th-century bridge building company located in Cleveland, Ohio. It was founded by Zenas King in 1858 and subsequently managed by his sons, James A. King and Harry W. King and then his grandson, Norman C. King, until the mid-1920s...

 in 1907.

In 2010, it is being replaced in a three year project expected to be completed in 2012.

It is one of eight moveable bridges on the Amtrak route through Connecticut surveyed in one multiple property study in 1986. The eight bridges from west to east are: Mianus River Railroad Bridge

Mianus River Railroad Bridge

The Mianus River Railroad Bridge, also known as the Cos Cob Bridge, is a bascule bridge built in 1904 over the Mianus River, in Greenwich, Connecticut. It was listed on the National Register of Historic Places in 1987...

 at Cos Cob, built in 1904; Norwalk River Railroad Bridge

Norwalk River Railroad Bridge

The Norwalk River Railroad Bridge — the Amtrak and Metro-North Railroad right-of-way over the Norwalk River was built in 1896, when the route was widened to four tracks...

 at Norwalk, 1896; Saugatuck River Railroad Bridge

Saugatuck River Railroad Bridge

The Saugatuck River Railroad Bridge, also known as Saugatuck River Bridge, is a railroad bridge carrying trackage of Metro-North railroad's New Haven Line over the Saugatuck River in Westport, Connecticut...

 at Westport, 1905; Pequonnock River Railroad Bridge

Pequonnock River Railroad Bridge

The Pequonnock River Railroad Bridge is a railroad drawbridge over the Pequonnock River in Bridgeport, Connecticut. Owned by the State of Connecticut and maintained and operated by Metro-North Railroad, it is also referred to as Pequonnock River Bridge, PECK Bridge, and Undergrade Bridge 55.90...

 at Bridgeport, 1902; Housatonic River Railroad Bridge, at Devon, 1905; Connecticut River Railroad Bridge, Old Saybrook-Old Lyme, 1907; this Niantic River Bridge, East Lyme-Waterford, 1907; and the Thames River Bridge

Thames River Bridge (Amtrak)

Amtrak's Thames River Bridge spans from New London to Groton, Connecticut, USA, crossing Connecticut's Thames River.The bridge was originally constructed in 1919 by the American Bridge Company for the New York, New Haven and Hartford Railroad replacing a span dating from 1889...

, Groton, built in 1919.

The bridge was deemed eligible for listing on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

in 1987, but was not listed due to owner objection, with decision reference number 87002124.