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The New NY / Mario M. Cuomo Bridge

Client

New York State Thruway Authority

Project Location

Tarrytown, NY

Related Markets

Bridges

Bergmann Location

Rochester, NY
The New NY / Mario M. Cuomo Bridge, Tarrytown NY (photo courtesy of the NYSDOT)

The New NY / Mario M. Cuomo Bridge, Tarrytown NY (photo courtesy of the NYSDOT)

Environmental compliance oversight lead for the $3.9B replacement of the Tappan Zee Bridge over the Hudson River.

Bergmann was a member of the HNTB-led team that served as the New York State Thruway Authority Owner’s Engineer for the design-build replacement of the Tappan Zee Bridge, now known as the New NY / Mario M. Cuomo Bridge.  We provided weekly independent assessments of compliance with permit conditions to the New York State Department of Environmental Conservation (NYSDEC). The reports covered construction activities, including dredging, armoring, pile driving, fish monitoring, bridge demolition, rock drilling, dewatering and concrete production/placement.

We also developed and established procedures for auditing compliance in endangered species; construction noise and vibration; dust and air quality; contaminated materials management, spill prevention, control and countermeasures; stormwater management; in-river water quality; ecological monitoring and cultural resources. Bergmann also coordinated with other consultants on HNTB’s team to provide net conservation benefits and compensatory mitigation as required by the NYSDEC permit for the project, including hydraulic modeling for the restoration of a secondary channel at Gay’s Point in Columbia County, NY.

Project Highlights

  • Prepared weekly independent overhead environmental compliance monitor report to NYSDEC
  • Developed and established procedures for auditing compliance in construction noise and vibration
  • Directed environmental compliance field staff in daily activities
  • Monitored peregrine falcon nest on the existing bridge and work with design builder and NYSDEC to develop a nest box design and location on the new bridge
  • Coordinated net conservation benefit projects, including mapping of Hudson River shallows, study of sturgeon foraging and movement, and by-catch outreach
  • Coordinated compensatory mitigation projects, including oyster restoration, secondary channel restoration at Gay’s Point; enhancements at Piermont Marsh and other projects being developed