WSDOT secrets: Inside the 520 Bridge investigation

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520 pontoon U damaged strand
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  • V Pontoon cracking
  • 520 bolt sleeve pour back missed
  • 520 cell 57 keel slab
  • 520 pontoon U damaged strand
  • 520 pontoon W pt block outs
  • 520 pontoon W pt block outs
  • 520
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520 pontoon U damaged strand