On November 7, 1940, Gallopin’ Gertie collapsed. If you are not familiar with the story, there is a great video clip of the failure in Tacoma, Washington. The bridge was only open for 130 days. “From the time the deck was built, it began to move vertically in windy conditions. Despite numerous warnings, officials decided to open the bridge anyway. In a 40 mph wind storm the bridge collapsed after a dramatic period of enormous up and down movement (seriously, if you have not seen the video, its worth the watch).