The maximum length of a bridge depends on several factors, such as the material used, the design, and the terrain it spans. Currently, the longest bridge in the world is the Danyang-Kunshan Grand Bridge in China, which is 102.4 miles (164.8 kilometers) long. However, this bridge is not a continuous span and includes viaducts, tunnels, and overpasses. The longest continuous span bridge is the Akashi Kaikyo Bridge in Japan, which is 1.23 miles (1.99 kilometers) long.
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