The Verrazzano-Narrows Bridge will begin a significant rehabilitation project focusing on dehumidification of its suspension cables after the MTA board approved a $249 million contract. This initiative aims to combat corrosion, enhanced by humidity, ensuring the safety and longevity of the critically important bridge used by 220,000 vehicles daily. The project is part of a broader MTA strategy that includes a similar system being installed on other bridges, promising cost-effectiveness and alignment with global best practices for bridge maintenance.
Essentially all of those cables, the wires bound up inside those cables, suffer from corrosion over time, and it's humidity that really accelerates the corrosion.
So, the goal is to get us back to under 40% humidity within that tightly bound cable, and keep it there.
It's a new system for us, but it's become a widely accepted method of preventing steel cable corrosion around the world.
With the 2025-2029 plan, we will be able to install the system on our two other suspension bridges as well.
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