MTR Shatin to Central Link Contract 1121 – Cross Harbour Tunnels is a design and build contract of 1.66km of Immersed tube tunnel (IMT) between Hung Hom and Causeway Bay.  The IMT prefabrication was carried out in one batch of 11 units in Shek O and was installed across the busy Victoria Harbour and inside the Causeway Bay Typhoon Shelter.

Asia Infrastructure Solutions Limited provided lead detailed design of permanent and major temporary works for the subsea railway crossing. Our design responsibility encompasses the design of the cut-and-cover tunnels at the Hung Hom landfall area, the immersed tube tunnels across the Victoria Harbour between the tunnels at the Hung Hom Landfall and the tunnels at Causeway Bay Typhoon Shelter as well as the casting basin at Shek O.