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[[File:Ironbridge 6.jpg|thumb|[[Iron Bridge]], 1781, was the first [[cast iron]] bridge]]
[[File:Ironbridge 6.jpg|thumb|[[The Iron Bridge]], 1781, was the first [[cast iron]] bridge]]
[[File:Pont d'arcades de Móra d'Ebre (Ribera d'Ebre, Catalonia).jpg|thumb|Bridge crossing river d'Ebre, [[Catalonia]].]]
:''For other meanings of "bridge" see [[bridge (disambiguation)]]''
⚫
[[File:Akashi-kaikyo bridge3.jpg|thumb|The longest suspension bridge in the world connects Honshu [[Shikoku|to Shikoku]], [[Japan]].]]
⚫
A '''bridge''' is a [[structure]] to cross an open space or gap. Bridges are mostly useful for crossing [[river]]s, [[valley]]s, or [[road]]s by [[vehicle]]s but people have also used bridges for a long time for walking. Bridges called [[highway]] overpasses are used to avoid [[traffic]] control.[[File:Pont d'arcades de Móra d'Ebre (Ribera d'Ebre, Catalonia).jpg|thumb|Bridge crossing river d'Ebre, [[Catalonia]].]]
{{otheruses}}
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Bridges also have uses in the [[military]]. Military bridges have to be [[portable]], so that they may be easily moved to the front lines, and so they are much more [[complex]] than regular [[wikt:civilian|civilian]] bridges.
⚫
A '''bridge''' is a [[structure]] to cross an open space or gap. Bridges are mostly made for crossing [[river]]s, [[valley]]s, or [[road]]s. Nowadays most big bridges are made to carry [[vehicle]]s but people have also walked across bridges for thousands of years. Bridges called [[highway]] overpasses carry a road over another road.

⚫
[[Military]] bridges are [[portable]], so that they may be easily moved to where they are needed. This makes them much more [[complex]] than most [[civilian]] bridges.


The first man-made bridges were probably made from cut wood or stones. Some stone bridges have lasted thousands of years. In recent centuries large bridges are made mostly of [[steel]]. They do not last as long. Many bridges are in a state of disrepair.<ref>https://usatoday30.usatoday.com/news/nation/2010-11-22-bridges22_ST_N.htm</ref>
== History ==
The first man-made bridges were probably made from cut wood or stones.


== Types of bridges ==
== Types of bridges ==
⚫
[[File:Akashi-kaikyo bridge3.jpg|thumb|The longest suspension bridge in the world connects Honshu [[Shikoku|to Shikoku]], [[Japan]].]]
There are five major structural types of bridges:
There are five major structural types of bridges:
* [[Beam bridge|beam]] bridges<ref name=beambridge>{{cite web | url=http://www.design-technology.org/beambridges.htm | title=Beam bridges | publisher=Design Technology | accessdate=2008-05-14}}</ref>
* [[Beam bridge]]s<ref name=beambridge>{{cite web | url=http://www.design-technology.org/beambridges.htm
| title=Beam bridges | publisher=Design Technology
| accessdate=2008-05-14}}</ref>
* [[cantilever bridge]]s,
* [[cantilever bridge]]s,
* [[arch]] bridges<ref name=dubai>{{cite web | url=http://www.arabianbusiness.com/509621-worlds-longest-arch-bridge-for-dubai?ln=en | publisher=Arabian Business | accessdate=2008-05-14 | title=Dubai to build world's longest arch bridge | first=Amy | last=Glass}}</ref>
* [[arch bridge]]s<ref name=dubai>{{cite web | url=http://www.arabianbusiness.com/509621-worlds-longest-arch-bridge-for-dubai?ln=en
| publisher=Arabian Business | accessdate=2008-05-14
| title=Dubai to build world's longest arch bridge | first=Amy | last=Glass}}</ref>
* [[suspension bridge]]s and
* [[suspension bridge]]s and
* [[cable-stayed bridge]]s<ref name=cable>{{cite web | url=http://www.newton.dep.anl.gov/askasci/eng99/eng99373.htm | title=Cable Stay vs Suspension Bridges | first=Andy | last=Johnson | publisher=U.S. Department of Energy}}</ref>
* [[cable-stayed bridge]]s<ref name=cable>{{cite web | url=http://www.newton.dep.anl.gov/askasci/eng99/eng99373.htm
| title=Cable Stay vs Suspension Bridges
| first=Andy | last=Johnson
| publisher=U.S. Department of Energy}}</ref>


==Notes==
== Notes ==
{{commonscat-inline|Bridges}}
{{commonscat-inline|Bridges}}
{{reflist}}
{{reflist}}
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[[Category:Basic English 850 words]]
[[Category:Basic English 850 words]]
[[Category:Bridges| ]]
[[Category:Bridges| ]]

[[new:ज्याभः]]

Latest revision as of 09:29, 28 November 2022

The Iron Bridge, 1781, was the first cast iron bridge
Bridge crossing river d'Ebre, Catalonia.
The longest suspension bridge in the world connects Honshu to Shikoku, Japan.
For other uses, see Bridge (disambiguation).

A bridge is a structure to cross an open space or gap. Bridges are mostly made for crossing rivers, valleys, or roads. Nowadays most big bridges are made to carry vehicles but people have also walked across bridges for thousands of years. Bridges called highway overpasses carry a road over another road.

Military bridges are portable, so that they may be easily moved to where they are needed. This makes them much more complex than most civilian bridges.

The first man-made bridges were probably made from cut wood or stones. Some stone bridges have lasted thousands of years. In recent centuries large bridges are made mostly of steel. They do not last as long. Many bridges are in a state of disrepair.[1]

Types of bridges

[change | change source]

There are five major structural types of bridges:

Notes

[change | change source]

Media related to Bridges at Wikimedia Commons

  1. ↑ https://usatoday30.usatoday.com/news/nation/2010-11-22-bridges22_ST_N.htm
  2. ↑ "Beam bridges". Design Technology. Retrieved 2008-05-14.
  3. ↑ Glass, Amy. "Dubai to build world's longest arch bridge". Arabian Business. Retrieved 2008-05-14.
  4. ↑ Johnson, Andy. "Cable Stay vs Suspension Bridges". U.S. Department of Energy.


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