SCE Access Roads (TRTP) Tehachapi

Tehachapi Renewable Transmission Project (TRTP)

Construction Access Roads

Project Description:

The Tehachapi Renewable Transmission Project (TRTP) required approximately 250 miles of new and upgraded 230kV and 500kV transmission lines to transfer electricity from renewable wind projects in southern Kern County, CA to Los Angeles County, CA and to the existing Mira Loma Substation in San Bernardino County.  Construction began in March of 2008, and was completed in 2011.  The transmission system now has the capacity of 4,500 megawatts.

Realtime Utility Engineer’s (RUE) portion of the project was to engineer access roads for the construction of 90 miles of new 500kV lattice tower line.  These access roads traversed through the foothills of the San Bernardino and Rocky Mountains.

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Project Scope:

RUE, as part of Quanta Service’s contract to construct these lines, was contracted by the Client to engineer access roads for Segments One (1) through Three (3) of this project.  Access roads for approximately 90 miles of new 500kV lattice tower construction were developed.  Access road alignments were chosen as to cause the least amount of grading and disturbance of the land.  Crane pads were developed at each structure location.  Where possible, the access roads themselves were used as a crane pad by developing sidings for the crane, and designing the ability for other vehicles to traverse by on the access road.

Realtime developed exhibits and worked with several environmental groups to present information pursuant to the California Environmental Quality Act (CEQA), administered by the Energy Services Division of the California Public Utilities Commission (CPUC).

Final deliverables included construction access plans, plan & profiles, cross-sections, cut and fill calculations, area of disturbance maps, and all grading plans necessary to build these access roads, as well as locations for conductor pulling equipment and splicing.

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