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Amtrak Awards $242M Contract to Convert Century-Old Movable Span to Fixed Crossing

Amtrak awards $242M contract to convert century-old movable lift span into fixed crossing

August 10, 2026 — 4 mins read

Over the past few decades, the approximately six-track bridge carrying more than seven hundred daily Amtrak, NJ Transit, and PATH trains across the Passaic River between Newark and Harrison has relied on a mechanical lifting mechanism to let river traffic pass beneath it. Amtrak just moved to replace that aging system entirely, awarding construction and project management contracts for a $242 million rehabilitation on the Northeast Corridor. The project targets the Dock Bridge (New Jersey), a triple-span structure that has been in continuous service since 1935, and will transform it into a permanently fixed crossing starting with major ground-breaking toward the end of 2026.

The bridge has repeatedly interrupted commuter rail schedules due to failures in its movable-span sensors and related mechanical components, prompting the decision to abandon vertical-lift operation altogether. Under a Design-Bid-Build contract valued at roughly $87 million, Skanska will lead the structural conversion, starting with the complete decommissioning of the three lift spans. The scope runs deep into the bridge’s supporting infrastructure: contractors will remove its existing mechanical and electrical systems, jack the original counterweights out of position, install permanent replacement supports, rehabilitate the concrete piers, and modify the overhead traction-power feeders to handle fixed-span routing.

Converting a movable span into a fixed crossing requires precise sequencing, particularly when the bridge sits directly over active barge channels and relies on aging substructures. A U.S. Coast Guard permit in late 2024 cleared the regulatory path for permanent structural changes that maritime authorities would normally never approve, and now LiRo-Hill will oversee a work schedule that begins heavy rehabilitation toward the end of 2026 while track realignment and signaling upgrades run in parallel. Skanska’s package is slated for completion in late 2028, clearing a timeline that accounts for both the demolition of century-old machinery and the reinforcement of foundations that have outlasted their original engineering life.

Most of the $242 million budget comes from a $188 million grant awarded by the Federal Railroad Administration, with the remaining funding split among Amtrak, NJ Transit, and PATH to cover contingency reserves and administrative overhead. A permanent structural fix removes the mechanical machinery that historically drained maintenance budgets while targeting steady reliability for 720 daily trains. The funding division reflects a multi-jurisdictional corridor where capacity gaps on a single river crossing ripple across regional schedules, and locking the span in place leaves future transit agencies with a simpler asset to inspect rather than recalibrate.

Movable bridges demand constant calibration of winches, alignment sensors, and counterweight drums—components that degrade quickly when exposed to river salt air and operate alongside active rail traffic. Bypassing those failure points entirely allows engineers to finish the concrete work and electrical upgrades while preserving the structural capacity needed for today’s heavier loads. Once Skanska hands over the completed crossing in 2028, the Northeast Corridor will gain a predictable vertical clearance and a maintenance profile that matches the operational reality of modern commuter rail rather than the mechanical limitations of twentieth-century design.

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