The Deadly Cost of Building America’s First Steel Bridge

Описание: America said it was impossible to bridge the Mississippi at St. Louis. In 1874 James Eads proved them wrong with the first steel rail bridge in American history.

The Eads Bridge was a bet on an unproven material, a war against a moving riverbed, and a breakthrough that changed engineering forever. To reach bedrock 130 feet below the Mississippi, Eads used French pneumatic caissons — pressurized chambers where 12 men died of caisson disease, the bends. To tame variable Bessemer steel from Andrew Carnegie, he forced every single piece to be tested to 1.5x working load — the birth of modern quality control. And to close the 520-foot central arch in summer heat, his crews used ice to shrink the steel into place.

Completed July 4, 1874, with three chrome-steel arches, the Eads Bridge is still standing 150 years later. This is how it was built, why the establishment tried to stop it, and what the Quebec Bridge collapse later proved about Eads' lesson.

CHAPTERS:
0:00 The River No Bridge Could Cross
2:15 The Salvager Who Defied The Engineers
5:40 Steel No One Trusted
9:20 130 Feet Down: Death in the Caissons
13:10 The Ice Trick That Closed The Arch
16:45 What Still Stands Today

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