The Aizhai Bridge is a suspension bridge on the G65 Baotou–Maoming Expressway near Jishou, Hunan, China.With a main span of 1,146 metres (3,760 ft) and a deck height of 350 metres (1,150 ft),it is the sixth-highest bridge in the world and the world's twelfth-longest suspension bridge. Of the world's 400 or so highest bridges, none has a main span as long as Aizhai.It is also the world's highest and longest tunnel-to-tunnel bridge.The bridge contains 1888 lights to increase visibility at night.