Topic summary
Stone arch
Extracted from the Wikipedia article Arch bridge.
Deck arch bridge
This type of bridge features an arch with the deck entirely above it. The area between the arch and the deck is known as the spandrel. If the spandrel is solid, usually the case in a masonry or stone arch bridge, the bridge is called a closed-spandrel deck arch bridge. If the deck is supported by several vertical columns rising from the arch, the bridge is known as an open-spandrel deck arch bridge. The Alexander Hamilton Bridge is an example of an open-spandrel arch bridge. Finally, if the arch supports the deck only at its top, the bridge is called a cathedral arch bridge.