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Pier 29-33 Substructure Rehabilitation

LOCATION:

San Francisco, CA

DESCRIPTION :  

This Port of San Francisco project involved substructure repairs to the aprons of Piers 29, 31.5 & 33 on the Embarcadero. The rehabilitation work supports the renewal effort of the Port’s northern waterfront and provides site improvement opportunities for long-term tenant operations.

Crews worked underneath the piers and within low tide windows only, which were often nightshifts, for this 18-month project. Prior to the actual work starting, what looked like a small underground city of platforms were built to provide temporary access to the below deck structure. Much of the success of this project was due to the team’s foresight to build such an elaborate scaffolding system – allowing seamless and efficient execution of the work.

Construction involved concrete demolition, rebar replacement, shotcrete installation, cast-in-place concrete, and spalling patch repairs. Several of the concrete pier pilings were repaired with concrete encasement by Power’s ADCI diving team.

The superstructure rehabilitation of the piers will extend their life for 30 years or longer as well as minimize future repairs that will become less accessible over time with sea level rising.