Coolidge Dam Outlet Rehabilitation Project Reaches Dredging Milestone

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Our Coolidge Dam Outlet Rehabilitation project recently reached a major milestone with the completion of dredging work at the reservoir. This work removed years of accumulated shotcrete debris from the dam domes and will unblock the flow entrances to the towers.

Along with our hardworking McMillen Jacobs construction crew, C-A Native Constructors and Crux Diving provided a significant role in dredging operations.

The next steps include the removal of existing cylinder steel gates weighing 100,000 lbs from each of the towers. The gates will be hoisted out of the top in sections with a specialized engineered system. Additional work includes the installation of a construction bulkhead for downstream penstock work.

Coolidge Dam is a reinforced concrete multiple domes and buttress dam located on the Gila River near Globe, AZ. Completed in 1928, the dam impounds water that serves as an irrigation water storage reservoir for approximately 100,000 acres of farmland in the vicinity of Florence, Casa Grande, and Sacaton, AZ.

McMillen Jacobs was retained by USACE to provide the supply of equipment and structures and all labor, plant, equipment, and materials for the rehabilitation project.

Learn more about the full scope of the project from our last news post: