McHenry Bridge Replacement – Ground Improvement Stone Columns
Location: Escalon, CA

Project Partner: Myers and Sons Construction, LP

Challenge: The installation of ground improvement stone columns at a congested jobsite to be completed in two phases.

Overview: Condon-Johnson was contracted to install drilled shafts, driven piles, and stone column ground improvement for the McHenry Bridge replacement project. The design goal of the stone columns were to mitigate the liquefaction and lateral spread potential of the upper loose sand that lies adjacent to the Stanislaus River and in which the piles are embedded.

Results: The Condon-Johnson crews dedicated to the three scopes of work – drilled shafts, driven piles, and ground improvement – worked closely together to plan and sequence the work to complete it in a manner that was most beneficial to the overall project. Packaging the three scopes together allowed the General Contractor to focus their efforts on the bridge demolition and construction while relying on Condon-Johnson to execute all three foundation scopes simultaneously.