San Francisco Oakland Bay Bridge

Extending for more than a mile across Oakland mudflats, the Skyway is the longest section of the East Span. It sits between the new Self-Anchored Suspension (SAS) span and the Oakland Touchdown. In addition to incorporating the latest seismic-safety technology, the side-by-side roadway decks of the Skyway feature shoulders and lane widths built to modern standards. The Skyway’s decks are composed of 452 pre-cast concrete segments (standing three stories high), containing approximately 200 million pounds of structural steel, 120 million pounds of reinforcing steel, 200 thousand linear feet of piling and about 450 thousand cubic yards of concrete.

The Bay Area Toll Authority (BATA) retained Hatch Mott MacDonald as part of a joint venture to provide program management services to help manage the project. HMM provided construction management tasks related to quality assurance, advised on technical documents, and produced monthly reports for the BATA Policy Board and California State Legislature. HMM also provided recommendations for construction packaging approaches to reduce risk in implementing the project.

Project Highlights:

• Helped identify $400 million in savings to the State of California through a review of SAS bridge bid documents and other technical documents
• Provided value engineering and technical expertise to assist in managing projects and resolving engineering challenges
• Advocated early completion incentives to accelerate project schedules
• Assisted with shop manufacturer inspection for the “hinge pipe beams”
• Provided seismic event structure protection and subsequent contract change order resolution
• Developed specification language to increase price competition and reduce risk
• Developed contract change order language to implement best practice technical solutions
• Performed due diligence reviews on commercial negotiations and assisted with negotiating for independent cost estimates