One day wind was 40 mph and the Gurdy bridge swayed side to side to much it collapsted. No one died or got injered, only one dog. The dog was to scared to get out of a car, so the dog went down with the bridge.Due to the harmonic vibrations the bridge began to wobble and shake. It was not just the wind speed. - The wind caused the vibration which in turn met the harmonic rythm of the structure causing the reaction.
Tacoma narrows bridge
Tacoma Narrows Bridge
Notably , "Galloping Gertie" , the suspension bridge "Tacoma Narrows Bridge" in 1940 .
The original Tacoma Narrows Bridge, known after the storm as "Galloping Gertie". == ==
the original Tacoma narrows bridge was called "galloping gertie" because the wind pressure became so strong that the bridge was overwhelmed by pressure and the two sides of the road began to "wave", the center line remaining at the same level.
The Tacoma Narrows Bridge is also called "The Current Bridge". Another nickname was "Sturdy Gertie".
Galloping Gertie was first. Second was stiff Gertie
The Tacoma Narrows Bridge was 5938 feet long before it collapsed.
Because in a cross wind the bridge swayed so much that you could not use it. Eventually this caused the bridge to collapse.
The ANZAC Bridge in Sydney Australia replaced the Glebe Island Bridge. It was designed by Percy Allan who also designed the Pyrmont Bridge.
The Middlesborough Transporter Bridge was designed by the Cleveland Bridge and Engineering Co.