One of the busiest and most critical rail crossings in the United States is about to undergo a major transformation as Amtrak prepares to begin a critical $242-million rehabilitation of the nearly century-old Dock BridgeDock Bridge Rehabilitation ProjectStatusPost-BidValue$235MLocationHarrison NJ 07029SectorPrivateTypeBridges/TunnelsData as of August 19, 2026View Project Page → spanning the Passaic River between Newark and Harrison, N.J.
The project is designed to improve reliability, safety and efficiency for more than 200,000 daily passengers travelling on several hundred trains that use the steel-through truss structure every day.
The six-track bridge, which opened in 1935, serves as a vital transportation artery on the Northeast Corridor, the busiest passenger rail route in the U.S.
Four tracks carry Amtrak and NJ TRANSIT trains, while the remaining two are used by the Port Authority Trans-Hudson (PATH) system.
The bridge accommodates approximately 720 train movements daily, making it one of the most heavily used rail bridges in North America.
To move the project forward, Amtrak recently awarded the construction contract to Skanska and selected LiRo-Hill to provide project management and oversight throughout construction.
Prime contractor is Hardesty & Hanover and subs include Garg Consulting Services Inc, Vector Corrosion Services, Burns Engineering, Engineering Planning and Management, Calladium, and Richard Grubb and Associates.
Major work is expected to begin before the end of the year, with completion targeted for 2029.
The project is being delivered through a design-bid-build procurement model.
The rehabilitation comes after years of growing concern over the bridge’s age and deteriorating condition.
As a movable lift bridge, Dock Bridge has been susceptible to operational problems when its tracks, signals and associated rail systems fail to align correctly after openings for marine traffic. There have also been frequent service disruptions due to failures involving sensors and other mechanical components, which have resulted in delays for commuters and intercity passengers.
“Dock Bridge is one of the most heavily used rail bridges in the United States and a critical link connecting New Jersey, New York and the entire Northeast Corridor,” Amtrak president Roger Harris said in a statement.
“This investment is one important example of several Amtrak and partner projects helping to modernize and strengthen the Northeast Corridor, thanks to strong support from the Federal Railroad Administration (FRA).”
A key element of the project involves converting the existing movable bridge into a fixed-span structure.
In late 2024, the U.S. Coast Guard issued a permit authorizing the change, paving the way for Amtrak to permanently secure the lift spans in place. Rather than continuing to open and close for river traffic, the bridge will remain fixed, eliminating the complex mechanical systems responsible for many of its operational challenges.
The conversion is expected to generate several benefits. By eliminating the movable components, Amtrak will reduce annual maintenance costs by millions of dollars while minimizing the likelihood of costly future repairs.
The fixed configuration is also expected to improve service reliability, reduce delays, enhance worker safety and potentially shorten travel times for passengers travelling through one of the most congested sections of the Northeast Corridor.
The scope of work extends far beyond the bridge conversion itself. Contractors will reinforce and strengthen steel structural elements, while also replacing major rail infrastructure components and rehabilitating concrete piers and protective fender systems.
Planned upgrades include sections of the overhead catenary power system, track infrastructure and signalling equipment.
Funding for the project comes primarily from a $188-million grant provided by the FRA. The remaining costs will be shared by Amtrak, NJ TRANSIT and PATH.
While the Dock Bridge rehabilitation is significant on its own, it represents only one component of the broader Gateway Program, an ambitious series of infrastructure investments intended to modernize the Northeast Corridor and create a more resilient passenger rail network.
The Gateway Program includes major projects such as the Portal North Bridge replacement, East River Tunnel rehabilitation, improvements to New York Penn Station, additional tracks and upgraded power and signalling systems.
For rail passengers, the importance of the Dock Bridge project cannot be overstated. The bridge sits on a strategic section of the corridor linking New Jersey and New York and plays a crucial role in moving commuters, intercity travellers and regional transit riders. A failure at the bridge has the potential to ripple throughout the Northeast Corridor, affecting schedules across the eastern U.S.
By extending the bridge’s useful life and replacing aging infrastructure, Amtrak hopes to eliminate a longstanding source of delays and improve the performance of the entire corridor.
NJ TRANSIT president and CEO Kris Kolluri says the capital investment advances the long-term vision while building on short-term improvements.
“This is another investment in the improvement of Amtrak’s Northeast Corridor to enhance reliability, improve long-term performance, and help ensure the safe and efficient movement of trains through one of the busiest sections of the rail network.”
