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The Tsing Ma Bridge is the world's longest span suspension
bridge carrying both road and railway traffic. The bridge towers
were constructed by slip forming, and the heavy steel saddles lifted
into position by jacks. After completion of the temporary footbridges,
which followed the line of the cables from anchorage to anchorage
via the tower tops, the cables were constructed by aerial spinning.
The total length of wire is enough to stretch four times round the
world.
The steelwork for the deck structure was fabricated overseas, mainly
in Britain and Japan. The steel was assembled in China mainland
at a site beside the Pearl River near Dongguan, 80 kilometres (50
miles) north of Hong Kong. These sections, each weighing about 1,000
tonnes, were brought to the site by barge, lifted into position
and suspended from the cables. Connection of the erected deck sections
then began, along with installation of the railway tracks, and this
was followed by laying of the roadway surfacing and a multitude
of other finishing works.
The bridge was built by the Anglo Japanese Construction Joint Venture.
This joint venture comprised Trafalgar House Construction (Asia)
Limited (part of the Kvaerner Group of Norway), Costain Civil Engineering
Limited of Britain, and Mitsui and Co. Limited of Japan.
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