Tacoma Narrows Bridge CollapseBlessed are those who can give without remembering and take without forgetting.
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The Tacoma Narrows Bridge Collapse

Tacoma Narrows Bridge Disaster

Galloping Gertie

The old Tacoma Narrows Bridge, built between Tacoma and Gig Harbor, Washington in 1940, vibrated so much that it was nicknamed "Galloping Gertie." In November of 1940, just four months after it was completed, it literally whipped itself apart.

 

Tacoma Narrows Bridge Video

The natural frequency of the bridge setup a resonant standing wave oscillation in the structure. Unfortunately, the resonant quality or Q of the bridge was too high, meaning that it was unable to dampen the oscillations enough to avoid collapse.

 


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