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Bay Corridor Transmission & Distribution Project Phase I, II, III 
San Francisco Public Utilities Commission 

San Francisco, CA

 

MCK has provided Construction Management services for all three phases of this multi-phase construction of a high voltage transmission and distribution system in the Southeast portion of San Francisco. MCK provided the Resident Engineer, Cost Estimator, Field Contracts Administrator, Office Engineer, and the QA Inspector/Field Engineer.

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Phase I consisted of the construction of new underground electrical utilities, underground wastewater pipeline replacement and rehabilitation, and roadway and sidewalk repaving, upgrade and restoration. Scope consisted of installing approximately 0.6 miles of underground duct bank, cables, conductors, as well as sewer force mains, gravity sewer pipe, cured-in-place sewer pipeline liner, water distribution and appurtenances, roadway and sidewalk improvements in public rights-of-way. 

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Phase II included providing design, construction and testing of more than 1 mile of electrical and communication duct banks, underground electrical and communications vaults, multiple trenchless crossings; 1,600 ft of earthquake resistant ductile iron pipe for the City’s auxiliary water supply system; roadway, sidewalk, and curb ramp improvements in public rights-of-way; retrofit/improvement of anchor blocks and ground conditions associated with existing bore and conduits under Islais Creek; utility relocation; and water distribution pipe and appurtenances.

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Phase III built a new high voltage electrical 230/12.47 kV electrical gas-insulated substation system at 1535 Davidson Avenue and pulled wire starting at Mission Rock Street and Terry Francois Boulevard and continuing to the new substation. Scope also included providing new 12 kV-480V and 12 kV-4160V submersible transformers inside existing vaults at the Mariposa Pump Station and Booster Pump Station sites.

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