It spans the Kap Shui Mun marine channel between Ma Wan and Lantau islands and has a vertical clearance of 47 metres (154 ft) above sea level.

The viaduct connects the KSMB to the Tsing Ma Bridge, forming the Lantau Link, which was built to provide access to the new airport.

Using the lighter steel cross section in the majority of the main span serves to equalize the horizontal forces on the towers and balance the bridge.

This means that there are no diagonal members in the cross section and that vehicles and rail cars drive through the openings provided by the Vierendeel design.

Concrete strength of towers: Grade 50/20 or 50MPa[clarification needed] The bridge has a height restriction of 41 metres for vessels passing underneath.

[4] The Tsing Ma Bridge has a higher height clearance of 53 metres but a source said the captain of the tugboat towing the barge may have opted to take Kap Shui Mun to save time.