The Stonecutters Bridge, Hong Kong

Photo: COWI
The bridge under construction.
The Stonecutters Bridge across the Rambler Channel is part of the Route 8 project in Hong Kong, an east-west expressway linking Hong Kong international airport, Chek Lap Kok at Lantau and the urban areas of the Kowloon peninsula.

COWI assisted the Highways Department with a detailed feasibility study with special attention to the aerodynamic response and stability of a long span cable-supported bridge.

Unlike the other major bridges of Hong Kong, the Stonecutters Bridge is clearly visible from the populated areas of west Kowloon and Hong Kong Island.

World-record cable-stayed span

The Highways Department of Hong Kong realised the potential of the site, with the dramatic setting of a world-record cable-stayed span in one of the busiest harbours in the world, and decided to procure the design concept through an international design competition.

Design competition for Stonecutters

COWI and Ove Arup have worked jointly to organise a design competition for the Stonecutters Bridge.

An independent technical evaluation of Stage 2 submissions was performed by COWI including: Structural and aero-dynamic adequacy check of girders, stay-cables and towers by means of IBDAS and DVMFLOW.

Further, COWI assisted as the secretary of the technical committee.

Cable-stayed bridge detailed design

The winning project of the design competition is a cable-stayed bridge with a record main span of 1,018 metres. The main span is supported from two single central towers both placed on land providing a clear entrance to the container port with a vertical clearance of minimum 73.5 metres.
 
The 53.5 metre wide bridge deck consists of twin box girders connected by cross girders.

The stay-cables connect to the outside edges of the deck only. The deck of the main span and 50 metres into the first back span is óf steel while the rest of the back spans are of concrete.

Contract for detailed design and construction supervision

COWI, together with Ove Arup and Partners in Hong Kong, won the prestigious contract of detailed design and construction supervision of the bridge. COWI is responsible for design of towers, steel superstructure and stay-cables.

Furthermore, COWI has carried out the global analyses and supervision of the extensive program for wind tunnel testing including interpretation of the results.

COWI has designed the bridge equipment and the structural monitoring system. The detailed design of the cable-stayed bridge has been particularly challenging as:

  • Stonecutters bridge is the first cable-stayed bridge with a span over 1 km for which detailed design has been carried out
  • the site is exposed to typhoon winds
  • the busy harbour puts severe restrictions on construction operations
  • the scope for structural modifications was limited as the overall appearance of the winning project of the design competition had to be maintained.

The bridge opened to traffic in 2009.

 

LAST UPDATED: 31.03.2017