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Ameren completes upgrade to Bagnell Dam


Concrete upgrade at Bagnell Dam, July 2018 [Ameren Missouri photo]

Concrete upgrade at Bagnell Dam, July 2018 [Ameren Missouri photo]

Ameren Missouri is reporting that construction crews have poured the final yards of concrete and are completing finishing touches on a $53 million reliability upgrade to its 85-year-old Bagnell Dam property.

The project included the installation of a series of new anchors and concrete on the downstream side of the dam to improve its overall safety, efficiency and reliability, Ameren reports.

“For nearly a century, the Bagnell Dam has reliably powered homes and businesses across the region,” said Warren Witt, director of hydro operations at Ameren Missouri. “These upgrades ensure the dam will continue to be a top producer of clean, renewable energy for Missouri’s communities for the next 100 years.”

Initial work on the upgrade began in March 2017 and included the removal of timeworn concrete from the surface of the dam. Crews then installed 67 post-tensioned anchors, strengthening the connection to bedrock. More than 66 million pounds of new concrete was poured to further weigh down the dam. This is the first major structural update to the dam in more than 30 years.

“The work our engineers perform to enhance the structural integrity of the Bagnell Dam continues to be viewed as a best practice and has been implemented on dams across the globe,” said Witt.  “Closer to home, we know these recent improvements help drive local economic development. For example, during the first 16 months of the project, more than 220 construction jobs were created for the local trades and vendors to the Osage area, translating to an estimated $40 million impact on the area through additional spending.”

Ameren Missouri hired Missouri-based MC Industrial, a McCarthy Holdings company, as the project’s on-site general contractor.

Bagnell Dam houses Ameren Missouri’s Osage Energy Center. In 2017, it produced more than 624,000 megawatt-hours of energy, supplying approximately 52,000 homes with renewable energy for the entire year.

 

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