The CWB is a new strategic trunk road running along the northern shore of Hong Kong Island. It will be a 4.5 km long dual three lane trunk road consisting of a length of 3.7 km tunnel from Central Rumsey Street Flyover, extending to the vicinity of City Garden at North Point, and finally connecting to the Island Eastern Corridor.
Upon completion of the CWB, it will only take about 5 minutes to travel between Central and Island Eastern Corridor at North Point. Linkage between the east of Hong Kong Island and other districts in the North-west of New Territories such as Tuen Mun or Hong Kong International Airport, will be more direct without passing through the busy districts of Causeway Bay, Wan Chai and Central.
The CWB will link up the reclamation area of Central and Wan Chai, running through the sea-bed of Causeway Bay Typhoon Shelter (CBTS). The proposed scheme of the CWB is widely supported by the public, as the tunnel option can facilitate the harbour front enhancement programme and allow the public to enjoy the valuable waterfront area.
Construction works of the CWB commenced in end 2009.