Tuen Mun-Chek Lap Kok Link

Gammon, our 50:50 joint venture, has helped improve journeys for users of the Tuen Mun-Chek Lap Kok (TM-CLKL) road in the New Territories area of Hong Kong.

The TM-CLKL road project comprised of two elements; the Northern Connection – which opened in December 2020 – and the Southern Connection – which opened in 2018. Our team successfully completed a contract within each Connection.

The Northern and Southern Connection Viaducts

The HK$2.6 billion Northern Connection project included the construction of the tunnel buildings and electrical and mechanical works which serve the 5km constructed tunnel.

This includes the tunnel’s ventilation, tunnel and road lighting, central monitoring and control systems. This is the first tunnel in Hong Kong to include a service gallery underneath the carriageway.

The civil engineering and building works included the construction of multiple tunnel buildings, with uses varying from administration and toll control to the maintenance depot and satellite control. The team also completed landscaping works on landfill at both sides of the tunnel.


approach viaducts


dual two-lane sea viaduct

The HK$8 billion Southern Connection Viaduct contract is part of the 9km TM-CLKL. The project involves the design and construction of a dual two-lane 1.6km sea viaduct between the Hong Kong-Zhuhai-Macao Bridge, Hong Kong Boundary Crossing Facility (BCF) and North Lantau.

The project also included the construction of nine approach viaducts and other associated works including slope improvement, environmental protection and mitigation measures.

Safe and efficient delivery

To ensure effective working in a safe environment, 70% of the electrical and mechanical works on the TM-CLKL Northern Connection tunnel project were built off-site using modular construction. 3D scanning of the tunnel was carried out to check for any as-built deviation or interfacing elements. This ensured that the requirements for fine adjustment were known in advance and well prepared before installation on-site, promoting safe and efficient working.