The Arnold Drive Bridge is a historic truss bridge in Eldridge, California in the United States. The bridge was built in 1930 over Sonoma Creek. The bridge serves as a connecting point between Eldridg
Arnold Drive Bridge in 2018
Flooding of the bridge during the October 2021 atmospheric river storm in California.
Concrete is a composite material composed of aggregate bound together with a fluid cement that cures to a solid. It is the second-most-used substance, the most widely used building material, and the m
A single concrete block, as used for construction
Exterior of the Roman Pantheon, finished 128 AD, the largest unreinforced concrete dome in the world.
Interior of the Pantheon dome, seen from beneath. The concrete for the coffered dome was laid on moulds, mounted on temporary scaffolding.
Opus caementicium exposed in a characteristic Roman arch. In contrast to modern concrete structures, the concrete used in Roman buildings was usually covered with brick or stone.