HONG KONG (XINHUA) – A prefabricated double-arch steel bridge for the Cross Bay Link, Tseung Kwan O, was erected on the bridge piers on Friday in Hong Kong using the “float-over method”.
Upon completion, it will be the longest span and heaviest steel arch bridge in Hong Kong and another landmark cross-sea structure.
The cross bay link in Tseung Kwan O is about 1.8 kilometres long, of which one kilometre is a marine viaduct and the steel bridge is an integral part of the marine viaduct. The project team adopted the “float-over method” to erect the bridge which weighs over 10,000 tonnes, and the team also took the tidal conditions into account for the erection.
The entire process lasted about five hours, starting from 7am local time until close to noon, according to a spokesman for the Civil Engineering and Development Department.
This is the first time that the “float-over method” has been applied for bridge erection in China, said Director of the China Road and Bridge Corporation Kan Jun, which is the contractor of the main bridge of the Link and associated works.