Little Goose Dam Spillway Deflectors

Prime Contractor: Advanced American Construction
Owner: US Army Corps of Engineers

Starbuck, WA
November 2008 - March 2009
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Project Details

The Spillway Deflector project was a modification to Spillway #1 & #8 at Little Goose Dam in Walla Walla, Washington. The contract involved the installation of two spillway deflectors, two pier nose extensions, and the installation of a new trash boom frame. Installation of the spillway deflectors required the fabrication and installation of a 30-foot tall by 70-foot long bulkhead to the dewater spillway. AAC partnered with Jesse Engineering of Tacoma, Washington to build the bulkhead.

The in-water work window for this project was November 1, 2008 through March 1, 2009.

Project Highlights

  • Contractor designed 30-foot tall x 70-foot long dewatering bulkhead
  • Installed 250,000 pound temporary bulkhead
  • Spillway deflectors 25-foot long x 50-foot wide x 11-foot tall
  • 400 anchor bars drilled into existing concrete
  • 850 cubic yards of cast-in-place concrete

Project Photos

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