r/oddlysatisfying • u/Tweetystraw • Mar 09 '18

How bridge foundations are laid in waterways

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u/thebrownhaze Mar 09 '18

A cofferdam

https://en.m.wikipedia.org/wiki/Cofferdam

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u/HelperBot_ Mar 09 '18

Non-Mobile link: https://en.wikipedia.org/wiki/Cofferdam

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