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SR 520 Bridge Project - Floating Bridge Construction

The pictures below illustrate the methods used to construct the Hood Canal Bridge, one of four floating bridges in Washington State. 

  
Floating bridge pontoons being constructed in a graving dock.  When completed, the graving dock will be flooded with water and the pontoons floated out to the bridge site.

Floating bridge pontoons being constructed in a graving dock.  When completed, the graving dock will be flooded with water and the pontoons floated out to the bridge site.

  
Photograph of crews constructing the new Hood Canal Bridge.

Photograph of crews constructing the new Hood Canal Bridge.

  
A bridge pontoon floating through Seattle's Elliott Bay.

A bridge pontoon floating through Seattle's Elliott Bay.


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