A vertical-lift bridge or just lift bridge is a type of movable bridge in which a span rises vertically while remaining parallel with the deck.
5-631: The Anacostia Railroad Bridge is a vertical lift railroad bridge crossing the Anacostia River in Washington, D.C. , United States. The bridge is owned by CSX Transportation . The Baltimore and Potomac Rail Road , a subsidiary of the Pennsylvania Railroad , built the first railroad bridge on this site, which opened on July 2, 1872. Successor Penn Central Railroad rebuilt the bridge in 1972. The bridge currently carries freight trains . It
10-514: A unit train carrying coal derailed and caused the collapse of the northern span of the bridge. CSX had briefly closed the bridge in 2006 after it found high levels of corrosion and made repairs, and after the 2007 accident it again closed the bridge. The southern span was reopened 24 hours after the accident. This article about a building or structure in Washington, D.C. is a stub . You can help Misplaced Pages by expanding it . This article about
15-462: A specific rail bridge in the United States is a stub . You can help Misplaced Pages by expanding it . Vertical-lift bridge The vertical lift offers several benefits over other movable bridges such as the bascule and swing-span bridges . Generally speaking, they cost less to build for longer moveable spans. The counterweights in a vertical lift are only required to be equal to the weight of
20-588: Is near the point where the RF&;P Subdivision becomes the Landover Subdivision , with a connection to the Alexandria Extension just to the east of the bridge. Originally the bridge supported three tracks . This was later reduced to two tracks. The lift span is occasionally raised for boat traffic. The lift is controlled by a CSX bridge tender located nearby at Benning Rail Yard. On November 10, 2007,
25-426: The deck, whereas bascule bridge counterweights must weigh several times as much as the span being lifted. As a result, heavier materials can be used in the deck, and so this type of bridge is especially suited for heavy railroad use. The biggest disadvantage to the vertical-lift bridge (in comparison with many other designs) is the height restriction for vessels passing under it, due to the deck remaining suspended above
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