US Army Corps of Engineers
Jacksonville District Website

The team secures the needles to the girder. The natural hydraulic pressure of the river presses the needles toward the girder, and also holds a curtain that is installed on the upstream side of the needles to provide an additional seal.
The team secures the needles to the girder. The natural hydraulic pressure of the river presses the needles toward the girder, and also holds a curtain that is installed on the upstream side of the needles to provide an additional seal.

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Photo by: Erica Skolte |  VIRIN: 180605-A-ZO284-056.JPG