Thames River Bridge (Amtrak)

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Thames River Bridge
Thames River Bridge (Connecticut) 101.JPG
Looking east along the bridge, May 26, 2012
Coordinates 41°21′47″N72°05′15″W / 41.36306°N 72.08750°W / 41.36306; -72.08750
CarriesTwo railroad tracks
Crosses Thames River
Locale New London, Connecticut and Groton, Connecticut
Official nameThames River Bridge
Maintained byAmtrak [1]
Characteristics
Design Truss with bascule opening (opening converted to vertical lift)
MaterialSteel
Total length1,389 feet (423 m)
Clearance below 29 feet (8.8 m) (vertical lift lowered) [2] 135 feet (41 m) (vertical lift raised) [2]
History
Opened1919 (replaced 2008) [1]
Location
Thames River Bridge (Amtrak)

Amtrak's Thames River Bridge spans the Thames River between New London and Groton, Connecticut.

Contents

Design and history

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

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

The Virginia-class attack submarine USS Missouri (SSN 780) heads towards the Thames River Bridge as it departs Naval Submarine Base New London for a scheduled deployment. Amtrak's Thames River Bridge.jpg
The Virginia-class attack submarine USS Missouri (SSN 780) heads towards the Thames River Bridge as it departs Naval Submarine Base New London for a scheduled deployment.

The bridge opens for marine traffic more than four times per day and serves up to 36 passenger trains and two freight trains per day. [1] The bridge sits 29 feet (8.8 m) above mean high water (MHW), and the vertical lift span opens to 135 feet (41 m) above MHW and provides 105 feet (32 m) of horizontal clearance. [2]

It is one of eight moveable bridges on the Northeast Corridor through Connecticut surveyed in one multiple-property study in 1986. [3]

See also

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References

  1. 1 2 3 4 Wald, Matthew L. (June 24, 2008). "Last Train to Cross Connecticut Drawbridge". The New York Times . Retrieved January 5, 2018.
  2. 1 2 3 NOAA. "Nautical Chart No. 13213: New London Harbor and vicinity; Bailey Point to Smith Cove 42nd ed. 03/01/2011". Washington, D.C.: National Oceanic and Atmospheric Administration. Retrieved 2 December 2011.
  3. Bruce Clouette, Matthew Roth and John Herzan (February 4, 1986). "Movable Railroad Bridges on the NE Corridor in Connecticut TR". National Park Service.