there really wasn t another major suspension bridge built until galloping gertie collapsed until its replacement in 1950, and many of the things that exist on the 1950s bridge are a tribute to better aerodine ammaamma stability. in 2007, a twin bridge is completed. the architectural look of both structures resembles the original gertie, a tribute to her grace and elegance. so that new bridge, as well as others have been constructed since 1940, are part of galloping gertie s legacy. coming up an iceberg implodes in front of a group of tourists, sending them scrambling for safety. we re all shouting and screaming like what? when caught on camera: watch out continues.
engineer for washington s department of transportation says the cause of the collapse was torsional flutter or aerodynamic instability. that was the vice that took the bridge down. this was a condition that no structure can maintain for a significant period of time. gertie is replaced by a stronger bridge in 1950, ten years after the collapse. but a part of it still survives. this is the side span, the approach span. this is the original galloping gertie s 1940 bridge. you can see the two eight-foot-deep open section. many lessons are learned from gertie s demise, including how critical aerodynamics are in building suspension bridges. there really wasn t another major suspension bridge after