What is the span of an arch bridge?

The span of an arch bridge is the horizontal distance between the supports, or abutments, of the bridge. The span of a bridge is an important factor in determining its overall strength and stability. The larger the span, the more complex and expensive the bridge will be to build and maintain.

Arch bridges are typically made of concrete, stone, or metal, and they are designed to transfer the weight of the bridge and its contents to the supports. The arch is the curved structural member that carries the load, and it is typically made of a series of voussoirs, or wedge-shaped stones. The voussoirs are arranged in a self-supporting arch that distributes the load of the bridge to the abutments.

The span of an arch bridge is limited by the strength of the arch and the ability of the abutments to support the load. The maximum span of an arch bridge is determined by the materials used, the design of the arch, and the geological conditions at the bridge site.

The longest arch bridge in the world is the Chaotianmen Yangtze River Bridge in China, which has a span of 1,650 feet. The longest concrete arch bridge in the world is the Danyang–Kunshan Grand Bridge in China, which has a span of 1,596 feet.