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Home > Areas of Business > Tunnels & Ground Engineering > Capabilities > Road Tunnels

ROAD TUNNELS

Discovery Bay Tunnel
Discovery Bay Road Link connects Discovery Bay with Cheung Tung Road , the utility road of North Lantau Expressway. The 630m long, 14m span Discovery Tunnel is the first private vehicular tunnel under the jurisdiction of Buildings Department. The tunnel was constructed using drill-and-blast tunneling methods. It is a single tube bi-directional traffic tunnel with a fire-protected corridor at one side for emergency escape. Atkins was responsible for the scheme development, investigation planning, detailed design and construction supervision of the tunnel and its associated control centre, ventilation building, utility building and utilities connection work.

Central-Wan Chai Bypass Tunnel within Central Reclamation Phase III
The Central-Wan Chai Bypass (CWB) and Island Eastern Corridor (IEC) Link are the proposed Trunk Roads connecting the existing Rumsey Street Flyover (Route 7) to the Island Eastern Corridor (Route 8) which form part of the east-west strategic route on the north side of Hong Kong Island . Atkins was commissioned by TDD to undertake the detailed design, tender preparation and site supervision of the CWB within Central Reclamation Phase III (CRIII). The scheme includes a cut-and-cover tunnel, with diaphragm walls providing the temporary and permanent support.

Central Kowloon Route
Atkins was the lead consultant for the preliminary design of this proposed major highway from To Kwa Wan to West Kowloon Reclamation. The scheme consists of 1900m of twin land bored tunnel, 1130m of cut and cover tunnels, ventilation buildings and major highway interchanges. The cut and cover sections, which vary between 12m to 34m in width and with depths of up to 28m, include a doubled to stacked arrangement over one section. The tunnel will pass within 4m of some 50-year-old buildings founded on shallow timber piles and more modern buildings on steel H piles and caissons. A cellular form of construction, involving transverse diaphragm walls at close centres , has been developed in order to minimise ground movements at critical sections.

Cheung Ching Tunnels – Route 3 Expressway
The Cheung Ching tunnels are an integral part of the Route 3 project that run in an east-west direction below Tsing Yi Island linking the West Kowloon Expressway with the Lantau Fixed (bridge) crossing. The tunnels were designed as 1.5km long, twin bore, 3-lane rock tunnels with each tunnel having excavated dimensions of approximately 17m wide by 10m high. The two tunnels are separated by a 13 to 20m wide rock pillar. Atkins was the consultant for planning, route selection, site investigations, detailed design, documentation, construction and supervision of tunnels, portals and slopeworks.

Tate's Cairn Highway Tunnel
The 3.9km long Tate's Cairn Tunnel Scheme provides twin two-lane tunnels between the Diamond Hill area of north east Kowloon and the Siu Lek Yuen area of Sha Tin together with approach roads linking the tunnel into the road system of both areas. The project was awarded as a “design, build and operate” franchise. A group of consulting firms was appointed to fulfill independent checking roles and to ensure quality control. Atkins was responsible for the independent checking of all civil works in the highway and ventilation tunnels. This covered design office and site checking controls and the issue of check certificates for each element of work.

Xiamen Eastern Corridor Subsea Tunnel
The Xiamen Eastern Corridor Subsea tunnel will be the first subsea road tunnel constructed in China . The 4.2km long scheme will comprise two 3-lane main tunnels (14.7m span, 9.8m high), separated by a service tunnel. All three tunnels will be constructed by drill-and-blast methods. Atkins, in conjunction with mainland design institutes, was responsible for undertaking an independent design check, with recommendations on constructability (including geological and water ingress assessments and excavation sequencing), risk management and contingency measures.

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