Bull Run Dam Tower 2 Improvement Project

Prime Contractor: Advanced American Construction
Owner: City of Portland Water Bureau

Sandy , OR
February 2012 - December 2014
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Project Details

AAC was the CM/GC for multiple phases to modify the north and south intake towers at Bull Run Tower 2 to improve fish habitat within the Bull Run River system. Modifications included installation of selective withdrawal system on the north tower, new mechanical and electrical operating systems, water quality montoring equipment, site civil improvements and fish flow piping. 

The pristine Bull Run Watershed is the source of drinking water for the City of Portland so special care had to be taken throughout this project to ensure that water was not contaminated. The total contract value on this project was more than $30 million.

AAC won the AGC/Alliant 2014 Build America Award and the Daily Journal of Commerce 2014 Top Projects Award for the Bull Run project.

Project Highlights

  • 250-foot long temporary work trestle
  • 1,600 cubic yards of sediment removal
  • Install underwater concrete block revetment system
  • Concrete demolition
  • North Tower structural steel wet well and slide gates
  • Install pre-engineered electrical building
  • Mechanical and electrical systems installation
  • Fish flow piping installation
  • Over 14,000 AAC diver hours to complete the work. Drilled shaft, tangent pile wall, and secant pile wall installation. Steel piping installation up to 96" diameter

Project Photos


  • 2014 Awards

    • Award
      AGC/ALLIANT 2014 Build America Award
      AGC/ALLIANT 2014 Build America Award
      AAC won the 2014 AGC Alliant Build America Award in the Utility Infrastructure Renovation category for the Bull Run Dam 2 Tower Improvement Project. The Alliant Build America awards recognize AGC member companies who build the country's most impressive construction projects in transportation, utility infrastructure and federal and heavy divisions. 

    • Award
      DJC 2014 Top Projects Award
      DJC 2014 Top Projects Award
      AAC's Bull Run Dam project won the Daily Journal of Commerce's 2014 Top Projects Award for its success despite environmental, contruction, timeline and  construction challenges. 

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