Because in a cross wind the bridge swayed so much that you could not use it. Eventually this caused the bridge to collapse.
Tacoma narrows bridge
Tacoma Narrows Bridge
Notably , "Galloping Gertie" , the suspension bridge "Tacoma Narrows Bridge" in 1940 .
Galloping Gertie was first. Second was stiff Gertie
The Tacoma Narrows Bridge was 5938 feet long before it collapsed.
The Tacoma Narrows Bridge is the bridge that spans the Tacoma Narrows strait between Tacoma and the Kitsap Peninsula in Washington State. The original bridge was opened in 1940, and collapsed later that year. Replacement structures have since gone up. A link can be found below.
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 original Tacoma Narrows Bridge, known after the storm as "Galloping Gertie". == ==
The Tacoma Narrows Bridge is also called "The Current Bridge". Another nickname was "Sturdy Gertie".
Tacoma Narrows Bridge was created in 2007.
The Tacoma Narrows Bridge crosses the Tacoma Narrows of the Puget Sound, it collapsed in 1940.
It crosses a revine called 'the tacoma narrows'