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Below. One of the two concrete caissons which support the bridge's
piers. Each has a volume equivalent to 400 double-decker buses and weighs
a total of 85,000 tonnes.
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Below. Steel pylons 84 metres high, rise from the road deck. Strong,
galvanised spiral-strand cables are anchored down the height of each pylon
and connect along the length of the road deck.
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Below. The height of the road deck above the river ensures that
shipping can pass safely under it. A vertical navigation clearance of
57.5 metres is necessary to enable this. The bridge is 137 metres high
in total.
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