San Francisco-Oakland Bay Bridge

The new East Span of the San Francisco-Oakland Bay Bridge is currently the world’s largest Self-Anchored Suspension (SAS) Bridge, and the first bridge of its kind constructed with a single tower and a single main cable. The innovative design features state-of-the-art seismic safety elements and provides the East Span with a modern, streamlined appearance and a graceful tower. The Yerba Buena Island Detour was a temporary truss structure that was built to carry traffic while crews connected the new span to the Yerba Buena Island Tunnel. The detour was completed during the 2009 Labor Day weekend bridge closure and includes five double-decker steel trusses that carry five lanes of traffic on each side. The new East Span of the bridge opened to traffic on Labor Day Weekend 2013.

Alta Vista provided quality assurance inspection, non-destructive testing, material sampling and inspection, and materials engineering services for this project.  Alta Vista implemented the Caltrans Quality Assurance (QA) Program and worked with the contractor and Caltrans to customize the QA inspection protocols and deliver innovative materials engineering recommendations to accelerate the project delivery.

  • Independent sampling, inspection, testing and verification
  • Plant inspections & quality assurance
  • ASNT NDT Level II and III services
  • AWS Certified Welding Inspector services
  • Specialized concrete engineering services including mix design review and grout evaluation
  • Facility audits
  • Materials engineering

For more information regarding Alta Vista’s involvement on the San Francisco-Oakland Bay Bridge, please visit: FAQ’s on AVS’ Involvement in QA for New E. Span of the SFOBB

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