Concrete bridge
Concrete bridges are a type of bridge, constructed out of concrete. They started to appear widely in the early 20th century.
History
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Unreinforced concrete has been used in bridge construction since antiquity: the Romans incorporated concrete cores into a number of their masonry bridges and aqueducts, along with constructing spanning water conduits of concrete.[1][2][3] From the late 18th century cast iron framed bridges may have had an unreinforced cast concrete deck, or had their structure encased in concrete, for example the Homersfield Bridge, constructed between 1869 and 1870, between the English counties of Suffolk and Norfolk.[4] In 1873, Frenchman Joseph Monier obtained a French patent for a method of iron-wire reinforced concrete bridge construction;[5] his first iron-wire reinforced concrete bridge was constructed across the moat of the marquis de Tillièrein's fr:Château de Chazelet, in 1875.[6][7] This and all later bridges made according to Monier's system patterned[clarification needed] the construction of previously used stone bridges. Their main structural unit was an arch barrel. All barrel sections were reinforced similarly, regardless of the forces acting on it.
The longest steel reinforced bridge, in 2024, is the 600 metres (2,000 ft) Tian'e Longtan Bridge, Guangxi Zhuang, China.[8]
The US's longest unreinforced concrete span, is the 200 feet (61 m) arch of the, 1910, Rocky River Bridge in Cleveland, Ohio.[9]
Early extant examples include:
Finland
[edit]- Savisilta "clay bridge", Ylivieska, the second oldest concrete bridge in Finland. (reinforced concrete, constructed 1912).
France
[edit]- Pont du jardin des plantes, Grenoble, foorbridge (cast concrete, constructed 1855)
- Bridge across the moat at Château de Chazelet (iron-wire reinforced concrete, constructed 1875)
United Kingdom
[edit]- Homersfield Bridge, River Waveney, England (cast and wrought iron reinforced, span 50 feet (15 m), constructed 1869-1870)
- Axmouth Bridge, on the River Axe at Seaton, Devon (unreinforced, middle span 50 feet (15 m), opened 1877)[10]
- Glenfinnan Viaduct, Scotland (unreinforced, twenty-one 50 feet (15 m) spans, constructed 1897–1901)
- Waterloo Bridge (reinforced cast concrete, longest span 233 feet (71 m), opened 1942)[11]
United States
[edit]- Alvord Lake Bridge, Golden Gate Park, San Francisco (reinforced concrete, 29 feet (8.8 m) span, 1889).[12]
- Walnut Lane Bridge, Philadelphia, PA (unreinforced concrete, 233 feet (71 m) span, 1908)
- Rocky River Bridge, Cleveland, Ohio (unreinforced concrete, 280 feet (85 m) span, 1910)
References
[edit]
- ^ Labate, Victor. "Roman Engineering". World History Encyclopedia. Retrieved 2024-05-30.
- ^ "Expedition Magazine | Roman Aqueducts". Expedition Magazine. Retrieved 2024-06-04.
- ^ Tellis, Gerard; Rosenzweig, Stav, eds. (2018), "Roman Concrete: Foundations of an Empire", How Transformative Innovations Shaped the Rise of Nations: From Ancient Rome to Modern America, Anthem Press, pp. 37–66, ISBN 978-1-78308-794-5, retrieved 2024-06-04
- ^ "Homersfield Bridge". Historic Norfolk. Retrieved 2024-05-30.
- ^ "Joseph Monier". britannica.com. Retrieved 2022-09-30.
- ^ "The world's first reinforced concrete bridge". www.chateau-chazelet.com. Retrieved 13 February 2023.
- ^ "The world's first reinforced concrete bridge". www.chateau-chazelet.com. Retrieved 2024-05-30.
- ^ "Tian'e Longtan Bridge - HighestBridges.com". www.highestbridges.com. Retrieved 2024-06-04.
- ^ "Rocky River Bridge, Rocky River Ohio". Historic Structures. Retrieved 2024-06-04.
- ^ "Heritage Locations". www.nationaltransporttrust.org.uk. Retrieved 2024-05-30.
- ^ "Waterloo Bridge". ar-tour.com. Retrieved 2022-09-30.
- ^ "Alvord Lake Bridge | Hensolt SEAONC Legacy Project". Retrieved 2024-05-30.
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