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Anonymous
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five years
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1 year
how long does it take to build a beam bridge of 2400 sq ft
It takes so long so that they make everything perfectly stable. You don't them rushing and then they miss a piece do you?
Tower Bridge is in London.
The current bridge was built between 1968 and 1973.
About 4 years.
5 years
About 5 minutes.
8 years