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“Cave” presumed from Collins video to be 15’ downstream along north side of Pier 5 footing.

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Presentation on theme: "“Cave” presumed from Collins video to be 15’ downstream along north side of Pier 5 footing."— Presentation transcript:

1 “Cave” presumed from Collins video to be 15’ downstream along north side of Pier 5 footing

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12 Upstream pier plan – Southwest corner of nose Undermining courtesy of Blueview Teledyne Plan view- south edge of leveling footer Potential for deeper penetrations picked up by scan Undermining

13 Sonar Scan Location Bridge Footer Scour/Undercut

14 Sonar Scan location ~0.75 m undercut ~4.5 m footer face

15 Face of bridge footer/leveling concrete pad Scour beyond face ~0.75 m undercut Curved concrete pier footing nose here

16 Upstream pier undermining courtesy of Blueview Teledyne


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