The State of California was facing an expensive and lengthy redesign of a vital roadway. When a previous demolition contractor had failed in their attempt to use customized excavators to break and remove the bridge support structures, Penhall was contacted to remove the remaining debris field, damaged Pier structures and obstructions that prevented construction of support structure for the new bridge.
Penhall joined forces to perform underwater wire sawing to remove sections of the Schuyler F Heim Bridge in Long Beach, California. Wire saw, rig and pick concrete pier structures necessary to clear multiple areas and make way for new bridge pile foundations.
Penhall assembled and managed a team of contractors and divers to expose, cut and extract over 4,300 cu yards of Pier structure from under the Schuyler Heim Bridge. Over 250 separate pieces of concrete, ranging in size from 14 tons to 74 tons, were cut, rigged and removed from depths of up to -71′ below the surface of the Cerritos Channel. This process required over 40,000 square feet of wire sawing and 2500 lineal feet of core drilling to complete safely and ahead of schedule, allowing Caltrans to proceed with construction of the new bridge structure.
“We just got into a rhythm. It’s what we’re there to do… Our performance and schedule really spoke for themselves.”
– Chad Maddock, Penhall Company – Sr. Project Manager
You can check out the full video here: https://www.youtube.com/watch?v=zpejwNa-TeQ