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Bridge
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===Bridge types by use=== A bridge can be categorized by what it is designed to carry, such as trains, pedestrian or road traffic ('''road bridge'''), a pipeline ('''Pipe bridge''') or waterway for water transport or barge traffic. An [[aqueduct (bridge)|aqueduct]] is a bridge that carries water, resembling a viaduct, which is a bridge that connects points of equal height. A road-rail bridge carries both road and rail traffic. Overway is a term for a bridge that separates incompatible intersecting traffic, especially road and rail.<ref>{{cite news |url=http://nla.gov.au/nla.news-article170491612 |title=The Mile-End Crossing |newspaper=[[The Observer (Adelaide)|The Observer]] |volume=LXXXI |issue=6,004 |location=South Australia |date=23 February 1924 |access-date=26 March 2018 |page=16 |via=National Library of Australia}}</ref> Some bridges accommodate other purposes, such as the tower of [[NovΓ½ Most]] Bridge in [[Bratislava]], which features a restaurant, or a [[bridge-restaurant]] which is a bridge built to serve as a restaurant. Other suspension bridge towers carry transmission antennas.<ref>{{cite journal |last1=Roberts |first1=Gethin |last2=Brown |first2=Christopher |last3=Tang |first3=Xu |last4=Ogundipe |first4=Oluporo |date=February 2015 |title=Using satellites to monitor Severn Bridge structure, UK |journal=Proceedings of the Institution of Civil Engineers - Bridge Engineering |volume=168 |issue=4 |pages=330β339 |doi=10.1680/bren.14.00008 |url=http://bura.brunel.ac.uk/handle/2438/12192 }}</ref> Conservationists use [[Wildlife crossing|wildlife overpasses]] to reduce [[habitat fragmentation]] and animal-vehicle collisions.<ref>{{Cite web|last=Greenfield|first=Patrick|date=23 January 2021|title=How creating wildlife crossings can help reindeer, bears β and even crabs|url=http://www.theguardian.com/environment/2021/jan/23/how-wildlife-crossings-are-helping-reindeer-bears-and-even-crabs-aoe|url-status=live|archive-url=https://web.archive.org/web/20210123083528/https://www.theguardian.com/environment/2021/jan/23/how-wildlife-crossings-are-helping-reindeer-bears-and-even-crabs-aoe |archive-date=23 January 2021 |access-date=2021-01-26|website=The Guardian|language=en}}</ref> The first [[Wildlife crossing|animal bridges]] sprung up in France in the 1950s, and these types of bridges are now used worldwide to protect both large and small wildlife.<ref>{{cite news|title=Animals Need Infrastructure Too|author=Sarah Holder|date=31 July 2018|newspaper=Bloomberg.com|access-date=21 February 2019|url=https://www.citylab.com/life/2018/07/wildlife-crossings-bridges-tunnels-animals-roads-highways-roadkill/566210/}}</ref><ref>{{cite web|title=Bridges for Animals to Safely Cross Freeways Are Popping Up Around the World|date=9 February 2017|access-date=21 February 2019|website=My Modern Met|author=Jessica Stewart|url=https://mymodernmet.com/wildlife-crossings/}}</ref><ref>{{cite web|title=World's Coolest Animal Bridges|author=Rachel Newer|date=23 July 2012|website=Smithsonian.com|access-date=21 February 2019|url=https://www.smithsonianmag.com/smart-news/worlds-coolest-animal-bridges-5774855/}}</ref> Bridges are subject to unplanned uses as well. The areas underneath some bridges have become makeshift shelters and homes to homeless people, and the undertimbers of bridges all around the world are spots of prevalent graffiti. Some bridges attract people attempting suicide, and become known as [[suicide bridge]]s.<ref>{{Cite journal|last=Glasgow|first=Garrett|date=1 March 2011|title=Do local landmark bridges increase the suicide rate? An alternative test of the likely effect of means restriction at suicide-jumping sites|url=http://www.sciencedirect.com/science/article/pii/S0277953611000384|journal=Social Science & Medicine|language=en|volume=72|issue=6|pages=884β889|doi=10.1016/j.socscimed.2011.01.001|pmid=21320739|issn=0277-9536|url-access=subscription}}</ref><ref>{{cite web | last=Marsh | first=Julia | title=Port Authority not liable for NYC bridge jumpers: judge | date=30 December 2018 | url=https://nypost.com/2018/12/30/george-washington-bridge-jumpers-only-have-themselves-to-blame-judge/ | work=[[New York Post]] | access-date=3 January 2019}}</ref>
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