Looking NE from cleared ground below 600-foot lock at <a rel="nofollow" class="external text" href="http://www.lrl.usace.army.mil/Missions/Civil-Works/Navigation/Locks-and-Dams/McAlpine-Locks-and-Dam/">McAlpine Locks</a>.
<p>At left, excavator with suction attachment (submerged) preparing river bottom for <a rel="nofollow" class="external text" href="http://www.ruhlin.com/documents/Temporary_Cellular_Cofferdam_Design_Installation_Removal_Willow_Island.pdf">cofferdam</a> construction.
In center, crane is placing <a rel="nofollow" class="external text" href="http://www.hammersteel.com/flat-sheet-piling.html">sheet pile</a> for a small connecting cell (cell 10.5) between cells 10 (at right) and 11 of the <a href="https://en.wikipedia.org/wiki/cofferdam" class="extiw" title="w:cofferdam">cofferdam</a>.
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<a href="https://en.wikipedia.org/wiki/Ohio_River" class="extiw" title="w:Ohio River">Ohio River</a> mile 607.
<a href="https://en.wikipedia.org/wiki/Louisville,_Kentucky" class="extiw" title="w:Louisville, Kentucky">Louisville, Kentucky</a>.
Mar. 5, 2001.
file # a1c015.
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</p>
6x9 cm E-6 transparency, taken with Fuji GW690 II (90 mm lens) or Fuji GSW690 III (65 mm lens).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70020260@N04">William Alden</a> from Louisville, Kentucky, USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/bill_alden/28848335788/">a1c015: Cofferdam construction at McAlpine Locks, Louisville</a>