We're at Minnesota Power's hydroelectric dam in Scanlon, Minnesota, to replace 7 of the structure's Tainter gates. Extending the life of this renewable energy source by 50 to 100 years, the Scanlon Dam Gate Replacement Project enables the further creation of clean, renewable power provided to local communities. 

We were pulled into the project very early on during the design phase of the project. Both Nelosca and Minnesota Power attribute the project's success to early contractor involvement.

Traditionally when it comes to installing sheet piling around a bridge pier or along an embankment we think of steel sheet piling.  Steel sheet piling are the most common, and have been one of the most effective methods of installing a deep foundation.  They have a long history of providing a robust barrier through shaped, interlocking sheets that can last for 75+ years. 

Preplaced aggregate concrete (PAC) is not a new concept.  In fact it is a method of concrete placement that has been around since the late 1930’s.  However, it is often overlooked as an option to repair dams and bridge piers.  In fact, it is one of the most effective forms of underwater concrete repair.