The original 3-mile-long cantilever Tappan Zee Bridge bridge spans the Hudson Rivers and will be replaced with a dual-span twin bridge.

Photo credit: New York State Thruway Authority

Project Details

The new bridge will be built on the north side of the old Tappan Zee, connecting to the existing highway approaches on both river banks. Construction began as scheduled during 2013, with completion targeted for 2018. Project costs are estimated at $4 billion. The deteriorating current structure bears an average of 138,000 vehicles per day, substantially more traffic than its designed capacity. During its first decade, the bridge carried fewer than 40,000 vehicles per day. Unlike other major bridges in metropolitan New York, the Tappan Zee was designed to last only 50 years. The new bridge is intended to last at least 100 years. As proposed, the new bridge will include four vehicle lanes on each span, eight lanes total and a shared-use bicycle and pedestrian path.

Role & Responsibility

Ashoka Consulting LLC staff oversaw all activities of program management services for the Replacement of the Tappan Zee Bridge project, including cost management for the $3.14B Design-Build contract.

  • Program Management
  • Project Controls
  • Procedure Development and Preparation
  • Cost Management / Controls
  • Schedule Management / Controls
  • Earned Value Management
  • Project Reports Development
  • Document Controls Management
  • Financial Controls
  • Payment Application Review
  • Risk Management Support

*This project represents independent experience of staff from Ashoka Consulting LLC while a member of a previous firm and/or agency.