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California High Speed Rail

California High-Speed Rail Authority

The California High-Speed Rail project will bring true high-speedtrain service to the United States. Once completed, the project will link the mega-regions of San Francisco and Los Angeles in under 3-hours (Phase 1). Eventually the system will expand north to Sacramento and south to San Diego (Phase 2), totaling 800 miles with up to 24 stations throughout California.

In the north section the planned Pacheco Pass tunnel with a length of approx. 13.5 miles will be the longest rail tunnel in North America. The tunnel will cross an active fault (Ortigalita Fault Zone). West of the Pacheco Pass Tunnel is another tunnel with a length of approx. 1.5 miles. In the south a series of tunnels totaling 45 to 50 miles are planned. All underground structures will be consisting of TBM tunnels, SEM tunnels, and Cut & Cover structures.

Program Management Service:

Gall Zeidler Consultants is working as part of the Rail Delivery Partner (RDP) with WSP | Parsons Brinkerhoff on behalf of the California High-Speed Rail Authority, on program management for the entire project.

Within the RDP scope of work the preparation of a detailed Design Criteria Manual and various standards and directives was required as this is the first High-Speed Rail project in the State. In addition, a series of Directive Drawings for all potential structures had been developed between the multi-disciplinary engineering teams.


San Francisco to Anaheim, California


2016 – Present


800 miles of high-speed train service, including 59 to 65 miles of tunnels


800 Miles (1287.48 kilometers)


28 feet (8.5 meters) in diameter




$77 Billion (estimate 2018 for Phase 1)


WSP | Parsons Brinkerhoff, Inc.


California High-Speed Rail Authority