Olmsted Dam

CTLGroup was contacted by Stantec Consulting Services, Inc. (Stantec) regarding a scope of work for laboratory investigation of Olmsted Dam tremie concrete during the the replacement of locks and dam numbers 52 and 53 at the Olmsted Dam. The general scope was to evaluate the materials and properties of the Olmsted tremie concrete mixture to be placed in precast tainter gate bay shells and stilling basin shells. Prior to the construction of these shells, a test shell section was constructed to evaluate the performance of the tremie concrete mixture. During the placement of the test shell section, the tremie concrete mixture reportedly experienced early-age stiffening problems, and CTLGroup evaluated the concrete mixture to identify the cause and developed the correct concrete mixture that was needed for success.


Civil Infrastructure

Water and WasteWater

Consulting Services

Concrete + Cement-Based Materials

Concrete Mixture Development & Qualification

Durability & Service Life

Project Specification Review & Development

Mass Concrete & Thermal Control

Ready-Mix Operations

Rheology, Pumpability, and Constructability

Laboratory Services

Durability & Service Life

Durability & Service Life Testing

The removal of locks and dams 52 and 53 is the most expensive and the largest inland waterway project ever performed in the United States.

Key experts on this project


Project Completion


Length in Feet



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Project Detail Form

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