Bridge Parapet
Bridge walls are built on the muro andatore component of the bridge framework. In both the wood bridge and metal bridge designs, the bridge walls resemble handrails found along the canals. A masonry bridge, however, may have one of two bridge walls.
Masonry bridge wall
The masonry bridge wall is composed of brick and is built upon the muro andatore component of a bridge. The wall is mostly brick however the last layer is a run of istria stone. The brick and stones are jointed together using mortar and the istria stone joints are similar to listolina joints.[1]
Rail bridge wall
Bridge walls can also be simple railed fences.[2]. These fences are almost always constructed of metal struts in different designs. Unlike the masonry bridge walls, these rails are built on the armilla component of a bridge.[3] Much like a canal wall, the rails are connected by colonnina.