hanna group, engineering firm sacramento, construction management sacramento, project management sacramento, bridge construction sacramento, interchange construction
  • hanna group, engineering firm sacramento, construction management sacramento, project management sacramento, bridge construction sacramento, interchange construction
  • hanna group, engineering firm sacramento, construction management sacramento, project management sacramento, bridge construction sacramento, interchange construction
Clients / Caltrans

Project Dates: 2003 – 2007
Project Costs: Estimated Construction Cost $230,000,000

The California Department of Transportation (Caltrans) is replacing the east spans of the Bay Bridge from Oakland to Yerba Buena Island.  To accomplish this, portions of the existing Bay Bridge must be removed and eastbound and westbound traffic shifted off the existing structure and onto a temporary detour structure (Temporary Bypass Structure- TBS). Once the TBS project is operational, it will create the room needed for the new Bay Bridge to enter the tunnel in its current alignment.

THG’s scope of work consists of providing Construction Management services including but not limited to the following:

  • Lead Field Engineering
  • Change Management
  • CCO Drafting
  • Constructability Review

Mehrdad Varzandeh, while employed elsewhere, was the Project Manager in charge of providing review of working drawings, stay-in-place metal deck forms, 10’ diameter cast-in-drilled-hole (CIDH) pile placement and mitigation plans, tie-down plans, and providing sound engineering solutions to this complex project. Other tasks include reviewing and analyzing the contractor’s CPM schedule, RFIs and preparing and negotiating change orders, and evaluating strategies to resolve disputes.