Washington’s four-month-old Tacoma Narrows Bridge collapses on November 7, 1940. Known as “Galloping Gertie” for its vertical ripple in a breeze, the span begins twisting laterally in the ...

It had opened just 4 months prior as the world's largest suspension bridge, but it soon gained the nickname Galloping Gertie due to its swaying in the Puget Sound winds. Eventually, strong winds ...