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LiveScience
LiveScience
Tia Ghose

Science history: The Tacoma Narrows Bridge collapses, forcing a complete rethink in structural engineering — Nov. 7, 1940

A video of a bridge twisting and turning.
QUICK FACTS

Milestone: Tacoma Narrows Bridge collapses

Date: 11:02 a.m. local time on Nov. 7, 1940

Where: Tacoma Narrows strait, Puget Sound, Washington

Who: Leonard Coatsworth and others who witnessed the collapse

The winds were blowing at 40 mph (64 km/h) across the Tacoma Narrows strait when "Galloping Gertie" began to bounce.

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