Suspension bridge: Difference between revisions

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{{BridgeTypePix
|image = 1915 Çanakkale Bridge 20220327.jpg
|image_title = The [[1915 Çanakkale Bridge]] on the [[Dardanelles]] strait in [[Turkey]], connecting [[Europe]] and [[Asia]], is the [[List of longest suspension bridge spans#Completed suspension bridges|longest suspension bridge in the world]].<ref>{{cite web|url=https://www.youtube.com/watch?v=BzrdNIsGVc0|title=Why Turkey Built the World's Longest Suspension Bridge|date=11 May 2022 |publisher=The B1M|access-date=22 May 2022}}</ref><ref name="hdn">{{cite news |url=http://www.hurriyetdailynews.com/groundbreaking-ceremony-for-bridge-over-dardanelles-to-take-place-on-march-18.aspx?pageID=238&nID=110948&NewsCatID=345 |newspaper=[[Hürriyet Daily News]] |title=Groundbreaking ceremony for bridge over Dardanelles to take place on March 18 |date=2017-03-17 |access-date=22 May 2022}}</ref>
|type_name = Suspension bridge
|sibling_names = [[Underspanned suspension bridge]]; see also [[cable-stayed bridge]]
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The [[Inca]] used [[Inca rope bridge|rope bridges]], documented as early as 1615. It is not known when they were first made. [[Queshuachaca]] is considered the last remaining Inca rope bridge and is rebuilt annually.
 
[[File:Burr Bridge, Schenectady, NY.jpg|thumb|left|The wooden 1808 Burr Suspension Bridge in Schenectady, NY, USA, during demolition in 1871, showing wooden cables.<ref>{{cite web | url=https://www.bridgemeister.com/pic.php?pid=1785 | title=Bridgemeister - Mohawk Wooden Suspension Bridge }}</ref><ref>{{cite web | url=https://www.vizettes.com/kt/upstateny-history/historical/burr-bridge.htm | title=Burr Bridge - Scotia, NY }}</ref> Spans of 160, 190, 180 and 157 feet on 3 piers began to sag, and 4 supporting piers were added in 1833 making 8 spans.<ref>p.62, Schenectady and the Great Western Gateway, 1926, Schenectady, NY, Chamber of Commerce</ref>]]
 
===Chain bridges===
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===Wire-cable===
[[File:Manhattan_Bridge_2007.jpg|thumb|left|The [[Manhattan Bridge]], connecting [[Manhattan]] and [[Brooklyn]] in New York City, opened in 1909 and is considered to be the forerunner of modern suspension bridges; its design served as the model for many of the long-span suspension bridges around the world.]] The first wire-cable suspension bridge was the [[Spider Bridge at Falls of Schuylkill]] (1816), a modest and temporary footbridge built following the collapse of James Finley's nearby [[Chain Bridge at Falls of Schuylkill]] (1808). The footbridge's span was 124 m, although its deck was only 0.45 m wide.
[[File:Pont de Tournon-sur-Rhône de 1825.jpg|thumb|[[Marc Seguin]] suspension bridge near [[Annonay]], 1825]]
 
Development of wire-cable suspension bridges dates to the temporary simple suspension bridge at [[Annonay]] built by [[Marc Seguin]] and his brothers in 1822. It spanned only 18 m.<ref name="Peters"/> The first permanent wire cable suspension bridge was [[Guillaume Henri Dufour]]'s Saint Antoine Bridge in [[Geneva]] of 1823, with two 40 m spans.<ref name="Peters">{{cite book
|last = Peters
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The principles of suspension used on a large scale also appear in contexts less dramatic than road or rail bridges. Light cable suspension may prove less expensive and seem more elegant for a cycle or footbridge than strong girder supports. An example of this is the [[Nescio Bridge]] in the Netherlands, and the Roebling designed 1904 Riegelsville suspension pedestrian bridge across the Delaware River in Pennsylvania.<ref>As exists with signage re the history.</ref> The longest pedestrian suspension bridge, which spans the River Paiva, [[Arouca, Portugal|Arouca]] [[Geopark]], Portugal, opened in April 2021. The 516 metres bridge hangs 175 meters above the river.<ref>{{Cite web|last=|first=|date=29 April 2021|title=World's longest pedestrian suspension bridge opens in Portugal|url=http://www.theguardian.com/world/2021/apr/29/worlds-longest-pedestrian-suspension-bridge-opens-in-portugal|access-date=29 April 2021|website=The Guardian|language=en}}</ref>
 
Where such a bridge spans a gap between two buildings, there is no need to construct special towers, as the buildings can anchor the cables. Cable suspension may also be augmented by the inherent stiffness of a structure that has much in common with a [[tubular bridge]].
{{Clear}}
 
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==Other examples==
{{See also|List of longest suspension bridge spans#History of longest suspension spans|l1=History of longest vehicle suspension bridge spans}}
[[File:Mackinac Bridge 2022.jpg|thumb|The [[Mackinac Bridge]] in [[Michigan]], opened in 1957]]
(Chronological)
 
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==Notable collapses==
{{unsourced section|date=December 2023}}
 
[[File:Tacoma-narrows-bridge-collapse.jpg|thumb|The [[Tacoma Narrows Bridge Collapse|Tacoma Narrows Bridge collapse]] on 7 November 1940]]
[[Broughton Suspension Bridge]] (England) was an iron chain bridge built in 1826. One of Europe's first suspension bridges, it collapsed in 1831 due to mechanical resonance induced by troops marching in step. As a result of the incident, the British Army issued an order that troops should "break step" when crossing a bridge.
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[[Peace River Suspension Bridge]] (Canada), which was completed in 1943, collapsed when the north anchor's soil support for the suspension bridge failed in October 1957. The entire bridge subsequently collapsed.
 
On 26 November 2011 at 16.20 local time, the [[Kutai Kartanegara Bridge]] in(Indonesia) aboveover the [[Mahakam riverRiver]], located in [[Kutai Kartanegara districtRegency]], [[East Kalimantan]], district on the [[Indonesia]] Experiencingisland collapseof [[Borneo]], was built in 1995 until it was completed in 2001 and happen collapsed in 2011. Dozens of vehicles on the bridge fell into the [[Mahakam River]]. 24 peopleAs dieda andresult dozensof werethis injuredincident, as24 apeople resultdied and dozens of thisothers incidentwere injured and were treated at the Aji Muhammad Parikesit Regional Hospital. Meanwhile, 12 people were reported missing, 31 people were seriously injured, and 8 people had minor injuries. Research findings indicate that the collapse was largely caused by the construction failure of the vertical hanging clamp. It was also found that poor maintenance, fatigue in the cable hanger construction materials, material quality, and bridge loads that exceed vehicle capacity, can also have an impact on bridge collapse. In 2013 the [[Kutai Kartanegara Bridge]] rebuilt the same location and completed in 2015 with a [[Through arch bridge]] design.
 
On 30 October 2022, [[2022_Morbi_bridge_collapse|Jhulto Pul]], a pedestrian suspension bridge over the [[Machchhu River]] in the city of Morbi, Gujarat, India collapsed, leading to the deaths of at least 141 people.
 
==See also==