They Nicknamed It 'Galloping Gertie'. They Watched It Fall

People used to drive across this bridge just to feel it ripple beneath their tires. Engineers knew about the movement from the first week it opened. Four months later, in an ordinary wind, it twisted itself apart and collapsed — on camera. This is the story of the Tacoma Narrows Bridge, the collapse that rewrote how every suspension bridge in the world has been engineered since.