Balancing rail, river and environmental demands
The project site sits within one of the most constrained rail corridors in the region, where multiple active rail lines, utilities and navigation requirements converge. The Passaic River is also designated as a Superfund site — a location identified as highly contaminated by the Environmental Protection Agency and managed under a federal remediation program — and was named one of America’s most endangered bridges in 2025, adding significant environmental and regulatory complexity.
Key challenges included:
- Maintaining daily freight operations during construction
- Navigating federal and state environmental permitting requirements
- Coordinating with multiple rail operators, utility owners and regulatory agencies
- Working within tight right-of-way limits and limited construction access
- Minimizing long-term impacts to the surrounding communities
Jacobs led a comprehensive planning and design approach that balanced constructability, environmental compliance and uninterrupted rail service. During the conceptual phase, multiple bridge alternatives were evaluated before advancing a single-leaf bascule option for the movable span. The bascule movable bridge operates like a counterweighted seesaw, with the deck — known as the leaf — pivoting upward to open and provide clearance for marine traffic.
The selected design provides unlimited vertical clearance in one navigation channel while maintaining a fixed clearance in the second channel, significantly reducing construction and lifecycle costs while meeting marine navigation requirements.
Environmental compliance followed the NEPA process, with early and continuous coordination among federal and state agencies. This proactive approach allowed sensitive areas to be avoided, streamlined approvals and reduced the need for additional permitting later in the project.