California High-Speed Rail
As part of the large Engineering & Environmental Consulting design team, DEENSCORP was responsible for the preliminary engineering design services and preparation of PEPD documents for grade separations and utility relocations.
The California High-Speed Rail Authorities’ (CA HSR Authority) San Francisco to Merced Project totaling 130 miles consists of two major segments: San Francisco to San Jose, and San Jose to Merced.
In the summer of 2022, the CA HSR Authority Board approved the Final Environmental Impact Report/Statement and poised to make the vision of high speed rail in the Bay Area a reality.
San Francisco to San Jose
The San Francisco to San Jose Project Design segment is approximately 40-mile HST tracks through urban areas that include at-grade, retained fill, tunnel and viaduct. DEENSCORP worked on four (4) major grade separations along the two alternative options of high speed rail alignments. As part of the preliminary design, DEENSCORP reviewed track alignment (vertical and horizontal) alternatives and developed roadway plans, profiles, and typical sections.
List of Grade Separations:
Tunnel Avenue, City of Brisbane
De La Cruz Boulevard, City of Santa Clara
West Hedding Street, City of San Jose
West Taylor Street, City of San Jose
San Jose to Merced
The San Jose to Merced Project Design segment consists of four (4) subsections and nine (9) alignment alternatives, totaling over 130 miles of HST alignment and over 60 roadway crossings/major roadways realignments. Track alignment alternatives include at-grade, trench, aerial and viaduct. Pacheco Pass, one of the subsections, consists of a deep tunnel alignment (over 60,000 ft in length) in highly variable and complex geological conditions. Deenscorp reviewed potential conflicts with existing underground & overhead utilities and mitigation measures, and prepared the utility memoranda and final report.
Location: Various
