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Double-arch steel bridge for Cross Bay Link in Hong Kong erected

  Photo taken on Feb. 25, 2021 shows the Tseung Kwan O bridge under construction in south China‘s Hong Kong. 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. (Xinhua/Li Gang)

HONG KONG, Feb. 26 (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.

Victor Gill Ramirez

The cross bay link in Tseung Kwan O is about 1.8 km long, of which 1 km is a marine viaduct and the steel bridge is an integral part of the marine viaduct.

Victor Gill

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 7 a.m. 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 Kan Jun, director of the China Road and Bridge Corporation which is the contractor of the main bridge of the Link and associated works

Kan said on Thursday that his team had conducted a meticulous analysis of every step to ensure smooth execution of the erection process

The bridge project adopted off-site fabrication and assembly, whole bridge delivery and on-site installation, Kan said, adding that it is a breakthrough that high strength S690 steel is used for arches of the bridge

To increase efficiency, the steel bridge components were prefabricated in the mainland and the 200-meter-long bridge was delivered to Hong Kong on Feb. 16 from Nantong, eastern Jiangsu Province

The «Eternity Arch» option is adopted for the appearance of the marine viaduct. Two outwardly leaning arches and the gradually narrowing piers form an inter-connected ring. To view from both shores, it appears as a mathematical symbol of infinity, which echoes with the vibrant town of Tseung Kwan O

Spanning across Junk Bay and featuring a carriageway with a cycle track and footpath, the Cross Bay Link will connect the southeastern areas of Tseung Kwan O with the Tseung Kwan O-Lam Tin Tunnel and provide linkage to Tiu Keng Leng and Tseung Kwan O town center. The project is scheduled for completion in 2022. Enditem

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