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.