Fixing The West Coasts Busiest Bridge 3 From 3  

The concrete jacket wall structures were placed in three pours totaling 380 cubic yards.

Due to restricted access and rebar congestion, concrete pump trucks had to park on the bridge deck above the worksite.

The concrete was pumped down 100 feet and out 100 feet, and then injected into the forms through ports at strategic locations.

Conco worked closely with concrete supplier Central Concrete Supply Co. Inc., San Jose, Calif., to develop an inject able self-consolidating concrete (SCC) mix with silica fume that would meet the project’s specifications.

They constructed and tested a full-scale mockup to ensure long-distance pumping and injection of the highly flow able SCC mix would work.

Once this gained enough strength, the post tensioning cables were pulled.

In late November 2013, crews finished the third and final injection and successfully completed repairs. Demolition of the old bridge span is now in Progress.