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SR 520 bridge during February 2006 storm.SR 520 bridge drawspan open during February 2006 storm. The three holes seen underneath the center roadway once had three large drawspan hooks -- which were torn off during the storm. SR 520 bridge drawspan alignment hook torn off during February 2006 storm.Post-tensioning cable strengthens floating pontoons against earthquake damage. Here is photo of post-tensioning running through the inside of a pontoon. Bridge crew routinely make repairs to cracks inside the floating pontoons. Here is a repaired crack. Four rows of orange pipe house post-tensioning cable.An up-close view of a repaired crack inside a floating pontoon. SR 520 bridge drawspan open to relieve wave pressure during February 2006 windstorm. SR 520 bridge closed for storm repairs during February 2006 storm.A view of the I-90 Lacey V. Murrow floating bridge's mid-sections sinking in 1990. A winter storm pounds the SR 520 Bridge, driving waves over the roadway. A severe winter storm wreaks havoc on the old Hood Canal Bridge. The inside of a hollow bridge support column that was damaged by a barge in 1999. WSDOT crews repair a damaged support column after a barge crash in July 1999. A torn cable joint found during a routine inspection. The cables connect the floating bridge pontoons with their underwater lakebed anchors.Return to main gallery