Thames River Bridge (Amtrak)

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This article is about a named bridge in the USA. For structures in the UK, see List of crossings of the River Thames.
Thames River Bridge
Thames River Bridge (Connecticut) 101.JPG
Looking east along the bridge, 26 May 2012
Official name Thames River Bridge
Carries Two railroad tracks
Crosses Thames River
Locale New London, Connecticut and Groton, Connecticut
Maintained by Amtrak [1]
Design Truss with Bascule opening (opening converted to vertical lift)
Material Steel
Total length 1,389 ft / 423.4 m [1]
Opened 1919 (renovated 2008)

Amtrak's Thames River Bridge spans from New London to Groton, Connecticut, USA, crossing Connecticut's Thames River.

Design and history[edit]

The bridge was originally a Strauss heel-trunnion Warren through-truss bascule design, built in 1919.[1] It was built by the American Bridge Company for the New York, New Haven and Hartford Railroad, replacing a span dating from 1889. In 2008 it underwent a renovation which included the draw span's conversion from a bascule to a vertical-lift mechanism.[2]

As built in 1919, the bridge's abutments and piers were designed to carry a second set of double-track spans, in the event that an expansion to four tracks was ever undertaken at this location by the New Haven Railroad (it never was).

Operation[edit]

The bridge opens for marine traffic more than 4 times per day and serves up to 36 passenger trains and two freight trains per day.[1] The bridge sits 29 feet (8.84 m) above mean high water, and the vertical lift span opens to 135 feet (41.14 m) above MHW and provides 105 feet (32 m) of horizontal clearance.[3]

It is one of eight moveable bridges on the Amtrak route through Connecticut surveyed in one multiple property study in 1986.[4] The eight bridges from west to east, and two other newer ones belonging to Amtrak, are, in order:

References[edit]

  1. ^ a b c Thames River Bridge Project, Amtrak.com PDF[dead link]
  2. ^ New Railroad Bridge: A River Runs Through It, The Day, Published on 7/2/2008[dead link]
  3. ^ NOAA. "Nautical Chart No. 13213: New London Harbor and vicinity; Bailey Point to Smith Cove 42nd ed. 03/01/2011". National Oceanic and Atmospheric Administration, Washington, DC, USA. Retrieved 2 December 2011. 
  4. ^ Bruce Clouette, Matthew Roth and John Herzan (February 4, 1986). "Movable Railroad Bridges on the NE Corridor in Connecticut TR". National Park Service. 

External links[edit]

Coordinates: 41°21′47″N 72°05′15″W / 41.3631°N 72.0876°W / 41.3631; -72.0876