Editing Arch bridge (section)

=== Corbel arch bridge ===
{{See also|Corbel arch}}
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File:arkadiko2.jpg|Corbel arch built from [[Cyclopean masonry]], in the Greek [[Arkadiko bridge]]
File:Eleutherna Bridge, Crete, Greece. Pic 03.jpg|Corbel arch in the shape of an [[isosceles triangle]], supporting the Greek [[Eleutherna Bridge]]
File:Corbelledarch.png|A corbelled arch with the masonry untrimmed
File:Trabeate Arch in New Delhi India.jpg|A corbel arch with the masonry cut into an arch shape
</gallery>
The corbel arch bridge is a masonry, or stone, bridge where each successively higher course (layer) cantilevers slightly more than the previous course.<ref>{{Citation| last =Richman| first =Steven M.| url=https://books.google.com/books?id=vt6g4eRkCDgC| year =2005| title =The Bridges of New Jersey| publisher =Rutgers University Press| page =23| isbn =978-0-8135-3510-4}}</ref> The steps of the masonry may be trimmed to make the arch have a rounded shape.<ref>{{Citation| last =Harris| first =Cyril M.| url=https://books.google.com/books?id=6n4JLmyooTwC| year =1983| title =Illustrated Dictionary of Historic Architecture| publisher =Courier Dover Publications| page =137| isbn =978-0-486-24444-0}}</ref> The [[corbel arch]] does not produce thrust, or outward pressure at the bottom of the arch, and is not considered a [[true arch]]. It is more stable than a [[true arch]] because it does not have this thrust. The disadvantage is that this type of arch is not suitable for large spans.<ref>{{Citation| last =Simpson| first =Frederick Moore| url=https://books.google.com/books?id=_FQpAAAAYAAJ| year =1913| title =A history of architectural development| publisher =Longmans, Green, and Co.| page =25}}</ref>