The main cell house building at the historic Alcatraz Federal Penitentiary was constructed in 1910-1912. With the way it was originally constructed and the island’s extreme weather conditions, the large, cast-in-place concrete support beams in the original Citadel and basement shower room areas that support the main cell-block structures began to deteriorate and fail, posing major structural damage to the historic building.
The general contractor on the project hired Western Specialty Contractors – San Francisco, CA Branch for the $3.6 million structural repair project after the original contract team defaulted on the job, pushing the project over a year behind schedule. Restoration work on the structure was also required to bring the structure up to California’s seismic codes for earthquakes. Once a contract was approved, Western’s crews quickly mobilized to the job site to complete the job.