The Kap Shui Mun Bridge (KSMB) is a double-deck cable-stayed bridge that crosses Kap Shui Mun Channel and links Lantau Island and Ma Wan in Hong Kong. With a main span of 430 metres and an overall length of 750 metres, it is one of the longest cable-stayed bridges in the world.
Completed in 1997, the bridge transports both road and railway traffic, with 6 lanes in the upper deck for motor vehicles, and 2 lanes for motor vehicles and 2 MTR lines in the lower deck. The lanes for motor vehicles at the lower deck are mainly used for emergencies and vehicular access to the airport during typhoon conditions.
The Kap Shui Mun Bridge is one of the three long span bridges linking the New Territories in Hong Kong with the Island of Chep Lap Kok, where the territory's new airport is located. The other two bridges are the Tsing Ma Bridge and the Ting Kau Bridge.
KSMB is connected to the Tsing Ma Bridge via the Ma Wan Viaduct, forming the Lantau Link that was built to provide access to the new airport.