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Tracy Boulevard Bridge Seismic Retrofit


Tracy, CA


This project was a seismic retrofit of a 1950’s bascule bridge on the Grant Line Canal.  The work included the driving of precast concrete piling, construction of below-deck concrete tie-beams, and installation of steel trunnion bearing braces.  The key constraint on the project was driven by permitting – a variety of issues led to most work being done in a 15 day period in September, 2006.

In addition, water depth issues made access to the work particularly challenging.