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A joint venture led by Trafalgar House has completed construction of the two 200m high supporting towers for the £550 million Tsing Ma bridge. Costain and Japanese contractor Matsui used 66,000 cu m of concrete for the two towers, which were topped out last week. In total more than 500,000 cu m of concrete, supplied by computer-controlled batching plants, was used for the towers, piers and anchors.The next stage is for Trafalgar House company Cleveland Structural Engineering to install cable saddles, each weighing 500 tonnes, on top of the towers.The Tsing Ma bridge will have a single suspended span of almost 1.4km, and will connect the centre of Hong Kong to the colony's new airport, which is under construction on Chek Lap Kok island. The bridge will have two levels with six lanes of traffic on the top deck and a combination of two rail tracks and two protected road lanes on the lower deck. CONSTRUCTION NEWS