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Dam Rehabilitation and Operational Updates to 100-Year-Old Structure

Posted by Kimberly Walters on August 09, 2023

Sandy Lake Dam is owned by the United States Army Corps of Engineers (USACE), St. Paul District. The USACE identified that the original concrete structure needed repairs and improvements to address immediate safety concerns. Because the dam structure was more than 100 years old, the USACE used this as an opportunity to have Brennan rehabilitate the dam and update many of its operational features.

Our new video shows you how we did it! 

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Helical Piles 101: Strengthening Foundations

Posted by Kimberly Walters on July 25, 2019

When we drive across a bridge and see exposed rebar and chipped concrete, we assume the bridge needs attention. We may even wonder whether the bridge is safe. But when it comes to the safety and integrity of a bridge, there is much more at work than what we see above ground. A structure is only as good as its foundation. Beyond the superstructure, how do we ensure the strength and stability of a structure's foundation? One effective solution: helical piles.

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How to Successfully Stabilize Dams Utilizing Post-Tensioned Anchors

Posted by Dave Laack on May 01, 2018

Lock and dam and hydropower infrastructure face numerous unique challenges when it comes to improving the safety and reliability of existing dams. An important structural enhancement for dam stabilization projects is the installation of high-capacity post-tensioned anchors, which may supplement or replace existing anchors.

According to the Post-Tensioning Institute, post-tensioned rock and soil anchors provide a cost-efficient, high-performance solution for projects needing both temporary and permanent stabilization solutions.

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