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By fixing the superstructure at one end, while allowing the other end of a span to move freely in the longitudinal direction, thermal stresses are alleviated and the lifespan of the bridge increased. A concrete girder bridge pier during construction prior to installation of the bridge deck and parapets, consisting of multiple angled pylons for ...
Latitudinal and longitudinal I-beams supported by the bottom chords provide a deck frame. They are trussed with two 7 ⁄ 8-inch wrought iron rods and braced by tie rods. Wooden planks laid horizontally across the frame serve as the deck. [2] Modern box girder guardrails run along both sides.
In the deck-type bridge, a wood, steel or reinforced concrete bridge deck is supported on top of two or more plate girders, and may act compositely with them. In the case of railroad bridges, the railroad ties themselves may form the bridge deck, or the deck may support ballast on which the track is laid.
The Great Northern Railway Underpass at Stanley, North Dakota is a concrete deck girder bridge that was built in 1937. It is listed on the National Register of Historic Places. [1] According to its nomination, the bridge "is a heavily-built single-span steel stringer design with a concrete substructure.
Thousands of orthotropic deck bridges are in existence throughout the world. Despite the savings and advantages (up to 25% of total bridge mass can be saved by reducing deck weight, as the weight reductions extend to cables, towers, piers, anchorages, and so forth), the US has only about 60 such bridge decks in use as of late 2005.
A concrete deck may be an integral part of the bridge structure (T-beam or double tee structure) or it may be supported with I-beams or steel girders. When a bridge deck is installed in a through truss, it is sometimes called a floor system. [1] A suspended bridge deck will
The Hart Bridge spanning the St. Johns River in Jacksonville, Florida, is a continuous, cantilevered truss bridge which combines a suspended road deck on the 332-metre (1,088 ft) main span and through truss decks on the adjacent approach spans
N. Bridge Pier Height Type Building Country Region/city Function 1 Millau Viaduct: P2 244,8 m Cable-stayed bridge: 2004 France Millau: Highway 2 Millau Viaduct: P3 221,7 m Cable-stayed bridge: 2004 France Millau: Highway 3 Kochertal viaduct P4 and P5 176 m Girder bridge: 1979 Germany Kocher: Highway 4 Lavant Viaduct: P3 and P4 165 m Girder ...
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