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Empire State Building - 1 year Hoover Dam - 5 years Mackinac Bridge - 3.5 years Key Bridge - 5 years

Empire State Building - 1 year Hoover Dam - 5 years Mackinac Bridge - 3.5 years Key Bridge - 5 years [Baltimore’s Key Bridge rebuild could take a decade, (((analysts))) say.](https://www.wypr.org/wypr-news/2024-03-27/baltimores-key-bridge-rebuild-could-take-a-decade-analysts-say)

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[–] • 2 pts

It only took 1 year and 45 days to build the Empire State building and less than 5 years to build the Hoover Dam.