RE: Bridges...An Old & Modern Marvel

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Bridges...An Old & Modern Marvel

in travel •  7 years ago 

Cool picture. Is that something they just dropped into the water? Or was it built there and drained?

travel
7 years ago by

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      ·  7 years ago 

    Great question, when the water body is large and the water is very deep the cofferdam technique is used - a wall enclosing an area inside a water body is first built, inside which water is constantly pumped out and dry working conditions have to be maintained.

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