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The Charles River Bridge is a pair of railroad single-leaf, through-truss, rolling
Although rail bridges across the Charles River near the present location of North Station have existed since the
bascule bridges
A bascule bridge (also referred to as a drawbridge or a lifting bridge) is a moveable bridge with a counterweight that continuously balances a span, or leaf, throughout its upward swing to provide clearance for boat traffic. It may be single- or ...
across the Charles River
The Charles River ( Massachusett: ''Quinobequin)'' (sometimes called the River Charles or simply the Charles) is an river in eastern Massachusetts. It flows northeast from Hopkinton to Boston along a highly meandering route, that doubles b ...
that connects North Station
North Station is a commuter rail and intercity rail terminal station in Boston, Massachusetts. It is served by four MBTA Commuter Rail lines – the Fitchburg Line, Haverhill Line, Lowell Line, and Newburyport/Rockport Line – and the Amtrak ...
in Boston, Massachusetts to MBTA Commuter Rail lines in northern Massachusetts
Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
, United States.
History
Although rail bridges across the Charles River near the present location of North Station have existed since the Boston and Lowell Railroad
The Boston and Lowell Railroad was a railroad that operated in Massachusetts in the United States. It was one of the first railroads in North America and the first major one in the state. The line later operated as part of the Boston and Maine ...
opened in 1835, the current bridges date from 1931, when the navigable channel of the Charles River was shifted 300 feet to the north of its former route to allow the platforms at North Station to be extended northwards. The bridges were formerly connected to North Station by a wooden trestle; the trestle burned in January 1984, forcing all trains to terminate at a temporary station north of the river for 15 months.
Design and construction
These bridges were designed by Keller & Harrington ofChicago, Illinois
(''City in a Garden''); I Will
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, and built by the Phoenix Bridge Company of Phoenixville, Pennsylvania
Phoenixville is a borough in Chester County, Pennsylvania, United States. It is located northwest of Philadelphia at the junction of French Creek and the Schuylkill River. It is in the Philadelphia metropolitan area. The population is 18,616 ...
. Each bridge uses a over-head concrete counterweight. Originally, there were four bridges, but only two of them remain.
See also
*List of bridges documented by the Historic American Engineering Record in Massachusetts
__NOTOC__
This is a list of bridges documented by the Historic American Engineering Record in the U.S. state of Massachusetts.
Bridges
References
External links
{{HAER list, structure=bridge
*List
*List
Massachusetts
Massachusetts ...
*List of crossings of the Charles River
This is a list of the crossings of the Charles River from its mouth at Boston Harbor upstream to its source at Echo Lake (the four tunnels crossing the inner portion of Boston Harbor are not included). All locations are in Massachusetts.
__TOC_ ...
References
External links
* * * Historic American Engineering Record in Massachusetts MBTA Commuter Rail Transportation in Cambridge, Massachusetts Railroad bridges in Massachusetts Truss bridges in the United States Buildings and structures in Cambridge, Massachusetts Bridges in Middlesex County, Massachusetts Bridges over the Charles River Steel bridges in the United States Bascule bridges in the United States {{US-rail-bridge-struct-stub