The Portal North Bridge Replacement is a major component of the Gateway Program and one of the most significant rail infrastructure projects in the United States. The existing Portal Bridge, constructed by the Pennsylvania Railroad in 1907 and placed in service in 1910, carries roughly 450 daily Amtrak and NJ TRANSIT trains across the Hackensack River between Kearny and Secaucus. As a two-track swing-span bridge, it creates reliability, operational, and capacity challenges due to difficult-to-maintain mechanical systems, low vertical clearance for maritime traffic and frequent disruptions along the Northeast Corridor.
What challenges is STV addressing?
The bridge sits within a narrow 160‑foot‑wide, 2.4‑mile corridor that supports the busiest passenger rail line in North America. Replacing the structure requires complex staging to maintain rail operations, coordinate with multiple agencies and construct major components in a highly constrained environment. Eliminating the existing moveable bridge while introducing a modern fixed‑span design demands precise engineering and oversight during each construction phase.
What solutions is STV delivering?
Working in joint venture for NJ TRANSIT, STV is providing construction management and inspection services for the new high‑level, three‑span network‑tied arch bridge. Services include critical path method scheduling, constructability reviews, project controls, and oversight of retaining walls, access roads, cofferdams, piers, columns, abutments and new trackwork. The team also manages demolition of the existing structure, including the swing span, miter rails, overhead catenary system and associated infrastructure. Prior to this contract, STV supported 24/7 emergency recovery and CEI services following the bridge’s mechanical failures.
How will this project benefit the community?
The new 50‑foot‑high fixed‑span bridge eliminates moveable components that cause delays, improves reliability for hundreds of thousands of daily riders and increases operational flexibility for both Amtrak and NJ TRANSIT. By modernizing a critical segment of the Northeast Corridor, the replacement supports long‑term economic vitality, enhances travel resiliency and strengthens regional mobility between New Jersey and New York.
Key stats and accolades
- Replacement of a 1907 swing‑span bridge
- High‑level, three‑span network‑tied arch structure
- Approximately 450 daily trains served
- 50‑foot vertical clearance eliminates maritime conflicts
- Complex construction phasing in a 160‑foot‑wide corridor
