Excavation of the Hudson County Access Shaft, where the first pair of tunnel boring machines will be removed. (October 2026)
Excavation of the 12th Avenue Access Shaft. (September 2026)
A construction worker at the HYCC-3 site installs a waterproof membrane. (September 2026)
Hudson County Access Shaft excavation. (September 2026)
Workers inside the 12th Avenue Access Shaft. (September 2026)
The tunnel boring machine’s cutterhead. (September 2026)
Finishing assembly of the tunnel boring machine in the launch box. (September 2026)
Tungsten carbide disc cutters in the tunnel boring machine’s cutterhead will break apart the hard rock of the Palisades. (September 2026)
Leaders from New York and New Jersey celebrate the start of tunnel boring. (September 2026)
Leaders from New York and New Jersey in front of the tunnel boring machine. (September 2026)
Crews inside the gantry at the Tunnel Boring Launch Ceremony. (September 2026)
The tunnel boring machine’s cutterhead installed in the launch box. (September 2026)
A section of the tunnel boring machine’s gantry. (September 2026)
Workers assembling the tunnel boring machine. (September 2026)
A worker assembles part of the tunnel boring machine in the main drive unit. (September 2026)
Assembling part of the tunnel boring machine’s gantry. (September 2026)
Assembling the tunnel boring machine’s main drive unit. (September 2026)
The tunnel boring machine being assembled in the launch box. (September 2026)
Installing the floodwall for the Hudson County Access Shaft. (August 2026)
Drilling into the rock at the Palisades Portal site.
(August 2026)
Over two continuous, 18-hour pours, HYCC-3 crews placed more than 5,500 cubic yards of concrete for the roof of the tunnel box. (July 2026)
Installing rebar for the Hudson County Access Shaft cap beam. (July 2026)
Underground pipes that will be used for ground freezing in Hudson River Park to harden the ground for tunnel boring. (July 2026)
Workers on the temporary cofferdam in the Hudson River. (July 2026)
Excavation of the launch box continues at the Palisades Portal construction site. (June 2026)
Construction of the HYCC-3 tunnel roof. (July 2026)
Installation of the 12th Avenue Access Shaft cap beam (June 2026)
Cranes are used to lower parts of the tunnel boring machine gantries into place for assembly in the launch box. (June 2026)
Cap beam installation is underway at the Hudson County Shaft. (June 2026)
The first tunnel boring machine’s gantry is being assembled under the new Tonnelle Avenue Bridge. (June 2026)
April 2025: Heavy equipment has started to arrive at the Palisades Tunnel Project site as prep work for tunnel boring continues to ramp up, including the start of soldier pile installation.
A hydraulic hammer breaks up rock on the Manhattan Tunnel Project construction site. (June 2026)
Pouring concrete for the roof of the HYCC-3 tunnel box. (May 2026)
Workers at the Palisades Portal site install tracks that will carry excavated materials out of the new tunnel. (May 2026)
A trench cutter used for excavation at the Manhattan Tunnel Project construction site. (May 2026)
Rock mass grouting at the Hudson County Access Shaft site. (May 2026)
In-water work in the Hudson River to prepare the riverbed for tunnel boring. (May 2026)
Concrete is poured over sand to make the roof of the HYCC-3 tunnel box. The sand is removed once the concrete hardens. (May 2026)
Crews reinforce the side walls of the tunnel portal by installing structural anchors into the rock. (May 2026)
Shields for the tunnel boring machines being assembled at the staging area next to the launch box. (May 2026)
Crane and tunnel boring machine components at the Palisades Portal construction site. (May 2026)
Installing the marine temporary structure to enable ground stabilization beneath the Manhattan Bulkhead. (May 2026)
Tunnel boring machine components next to the launch box at the Palisades Portal construction site. (April 2026)
Construction of the HYCC-3 tunnel box under the High Line. (April 2026)
Mixing concrete at the Palisades Portal construction site. (April 2026)
The tunnel boring machine cutterheads at the Palisades Portal site (March 2026)
Pouring concrete for one of the 12th Avenue Access Shaft slurry wall panels (March 2026)
Installing the waterproofing membrane in the HYCC-3 tunnel box wall (March 2026)
The main drive unit for the second tunnel boring machine arrives at the Palisades Portal construction site (March 2026)
The cutterhead for tunnel boring machine S-1431 at the Palisades Portal site (March 2026)
Construction of the walls of the HYCC-3 tunnel box in Manhattan (March 2026)
Traffic on the new Tonnelle Avenue bridge (March 2026)
The HRGS, Manhattan Tunnel Project, and HYCC-3 construction sites show the route the new tunnel will take as it comes up from under the river and connects to Penn Station (March 2026)
Workers on the HYCC-3 Project are installing rebar and pouring concrete to form the final section of the concrete casing under Hudson Yards (March 2026)
The Tonnelle Avenue bridge enables workers and equipment to move between staging areas on both sides of Tonnelle Avenue without disrupting traffic (March 2026)
Installing an overwater platform to enable ground freezing around the Manhattan bulkhead (March 2026)
Installation of a slurry wall panel for the Hudson County Access Shaft. The slurry wall was completed in early March, creating a watertight perimeter for the shaft below ground. (March 2026)
Excavation of the tunnel boring machine launch box in North Bergen, NJ resumed the week of February 23 (February 2026)
Work on the Manhattan Tunnel Project, including construction of the 12th Avenue Access Shaft and a marine platform in the Hudson River, resumed the week of February 23 (February 2026)
Workers resumed building the Hudson County Access Shaft in Weehawken, NJ, the week of February 23 (February 2026)
Deep soil mixing to stabilize the riverbed within the cofferdam in the Hudson River resumed the week of February 23 (February 2026)
Pouring concrete for the Hudson Yards Concrete Casing – Section 3 Project (February 2026)
More than 200 union workers rallied at GDC’s North Bergen Construction site to call for the project’s federal funding to be restored. (February 2026)
Hundreds of workers are impacted by the construction pause that went into effect on February 6 due to lack of federal funding. (February 2026)
An extended construction pause will put tens of thousands of jobs at risk. (February 2026)
January 2026: Openings for both tunnel tubes connecting the section of the Hudson Yards Concrete Casing currently under construction to the part of the concrete casing that is already finished.
January 2026: Components of the first tunnel boring machine staged for assembly next to the portal launch box.
January 2026: Ground stabilization work in the frozen Hudson River. In the foreground: construction of the 12th Avenue Access Shaft.
January 2026: LiUNA Local 472 Laborers pour concrete for the portal launch box in North Bergen, NJ.
January 2026: The main drive unit for tunnel boring machine S-1431 is loaded onto a truck for delivery to the Tonnelle Avenue construction site.
January 2026: Opening in the bulkhead at the west end of the HYCC-3 trench, connecting to the section of the concrete casing that is already built.
January 2026: Construction of the launch box at the tunnel portal in New Jersey.
January 2026: With 32 panels complete, we’re more than halfway finished installing the slurry wall for the Hudson County Access Shaft.
December 2025: The HYCC-3 team poured more than 2,700 cubic yards of concrete in 24 hours to form a section of the tunnel box floor.
December 2025: Manufacturing of the two tunnel boring machines that will be used for the Palisades Tunnel Project is complete.
December 2025: Each tunnel boring machine’s cutterhead is nearly 29 feet in diameter.
December 2025: The tunnel boring machines weigh more than 1,680 tons and are more than 500 feet long.
December 2025: TBM S-1432 assembled at the factory for testing.
December 2025: TBM S-1432’s erector arm and segment feeder. The erector arm will be used to install segments of the tunnel liner as the machine builds the new tunnel tube.
December 2025: Ground stabilization work continues in the Hudson River. Approximately 60,000 square feet of the riverbed has now been stabilized.
December 2025: Installing rebar in the HYCC-3 trench in preparation for upcoming concrete pours.
December 2025: Excavation and construction of the portal launch box at the base of the Palisades where the first two tunnel boring machines will be assembled.
December 2025: We completed the Tonnelle Ave bridge structure, opening the passage beneath the highway that will be used to bring the TBM components in for assembly.
December 2025: Construction of a slurry wall panel for the 12th Avenue Access Shaft. Seven slurry wall panels have been completed so far.
December 2025: Snow on the ground highlights the outline of the Hudson County Access Shaft in Weehawken. The circumference of this shaft is more than 400 feet.
November 2025: The view from the eastern end of the HYCC-3 trench. Sections of the concrete floor and walls of the tunnel box are visible below the yellow struts that support the sides of the trench.
November 2025: Marine temporary structures in the water just off Manhattan enable ground stabilization beneath the bulkhead.
November 2025: Installation of a slurry wall panel for the Hudson County Access Shaft.
November 2025: Excavation in preparation for the arrival of the first set of tunnel boring machines is visible under the new Tonnelle Avenue bridge.
November 2025: A king pile is pulled from the western side of the cofferdam. It will be reinstalled on the eastern side to shift the enclosed area toward Manhattan.
October 2025: The Tonnelle Avenue bridge is almost finished. The team is building the eastern bridge deck and there is clearance below the highway for the tunnel boring machines.
October 2025: The Hudson River Ground Stabilization team has finished mixing 378 primary columns and 309 secondary columns of reinforced earth in the riverbed.
October 2025: The HYCC-3 team completed the first major concrete pour of the project, pouring 4,500 cubic yards of concrete to form the tunnel box.
October 2025: Ten of the 42 panels that will make up the slurry wall of the Hudson County Access Shaft have been completed.
October 2025: Work to get ready for underground construction is ongoing on both sides of 12th Avenue – and in the river.
September 2025: The Tonnelle Avenue Project will be finished soon, clearing the way for the first set of tunnel boring machines to be brought to the launch point in New Jersey.
September 2025: The cofferdam containing the Hudson River Ground Stabilization Project work area is moving closer to Manhattan as the team makes progress on stabilizing the riverbed.
September 2025: The HYCC-3 team installed liner wall inside the trench and prepared to pour concrete to form the floor of the tunnel box.
September 2025: The noise barrier around the Hudson County Access Shaft construction site is now in place.
September 2025: The 12th Avenue Access Shaft is taking shape in Manhattan. This 130-foot-wide, 80-foot-deep shaft will enable underground construction beneath 12th Avenue and W. 30th Street.
August 2025: For the first time ever, you can see daylight under Tonnelle Avenue. The first construction package of the Hudson Tunnel Project is almost done!
August 2025: The HRGS team started work removing the submerged remains of Pier 68 to clear the path for the tunnel boring machines.
August 2025: The HYCC-3 team installs struts, tiebacks, and walers to hold up the walls of the trench during excavation and tunnel box construction.
August 2025: We installed a barrier along the edge of the Hudson County Shaft construction site to reduce noise from the work site.
August 2025: Guide walls for the 12th Avenue Shaft are being installed, showing the scale of this massive access shaft.
August 2025: CEO Tom Prendergast shows FTA Administrator Marc Molinaro and FRA Senior Advisor David Fink the progress we have made across five active construction sites in the year since securing full funding for the project.
July 2025: Traffic on Tonnelle Avenue was shifted onto the newly-built middle section of the bridge. This marked the transition into the final phase of this project.
July 2025: The team started shifting the cofferdam east so stabilization can proceed on a new section of the riverbed. Deep Soil Mixing continues inside the cofferdam.
July 2025: CEO Tom Prendergast speaks to reporters during a media tour of the five active HTP construction projects.
July 2025: A worker on the HYCC-3 Project installs support of excavation infrastructure to hold up the walls of the trench while excavation progresses.
June 2025: The Hudson County Shaft has started to take shape. This shaft that will be used to replace the tunnel boring machines that dig the New Jersey section of the tunnel with the machines that will dig under the Hudson River.
June 2025: Construction of the Manhattan Tunnel Project kicked off with the demolition of existing structures and removal of underground obstructions at the work site.
June 2025: The team working on the Palisades Tunnel Project built a massive access ramp to enable support of excavation work around the tunnel boring machine launch point.
May 2025: Crews relocated the gas main that runs beside Tonnelle Avenue, enabling the final stage of bridge construction to begin.
May 2025: The team reached the halfway point of the HYCC-3 project on schedule. More than 400,000 tons of soil and 1 million gallons of water have been removed.
May 2025: Work on the Manhattan Tunnel Project has started. Investigatory geotechnical boring is in progress to collect data on soil and rock conditions before construction of the 12th Avenue shaft begins.
May 2025: GDC CEO Tom Prendergast speaks to members of Congress during a tour of the active construction sites in Manhattan.
April 2025: Construction of the center portion of the bridge continues at Tonnelle Avenue.
March 2025: Excavation and dewatering of the trench that will hold the HYCC-3 tunnel box continues. Struts are installed to support the sides of the trench during excavation.
March 2025: Our partners at the Federal Transit Administration joined GDC staff for a tour of active construction sites, including an on-water look at the Hudson River Ground Stabilization work site in the Hudson River.
February 2025: The team drives the last of 337 secant piles to hold up the sides of the trench where the HYCC-3 tunnel box will be built.
January 2025: Stage 2 of the Tonnelle Ave. Project begins. This stage involves building the middle portion of the bridge and relocating utility lines.
January 2025: GDC hosted an open house in North Bergen, NJ to share information about the project with the communities where construction is happening.
December 2025: The team reached the halfway point of the Tonnelle Avenue Project on schedule and on budget.
December 2025: The Hudson River Ground Stabilization team started deep soil mixing. This will stabilize the riverbed in preparation for tunnel boring through the soft ground beneath the Hudson River.
July 2024: Signing ceremony at Block 675 for a Full Funding Grant Agreement (FFGA) with the Federal Transit Administration (FTA), locking in $6.88 billion in Capital Investment Grant (CIG) funding and the full $16 billion needed to complete the HTP.
July 2024: Signing ceremony at Block 675 for an FFGA with FTA.
May 2024: FTA Region 2 visiting the Hudson Yards Concrete Casing – Section 3 (HYCC-3) construction site.
January 2024: GDC staff delivering a Hudson Tunnel Project presentation to representatives from DBE firms at our 9th industry outreach event.
November 2023: Breaking ground on the Tonnelle Avenue Bridge and Utility Relocation Project. This is the Hudson Tunnel Project’s first construction site in New Jersey.
November 2023: Tonnelle Avenue groundbreaking
November 2023: Launching work on the Hudson Yards Concrete Casing – Section 3 (HYCC-3), the Hudson Tunnel Project’s first construction site in New York.
November 2023: Launching work on HYCC-3.
January 2023: The $292 million Mega grant for work on the Hudson Yards Concrete Casing – Section 3 (HYCC-3) was announced in New York City.
October 2023: Artist Marisa Morán Jahn’s Re/Connections, a large-scale public art installation from Art at Amtrak, wrapping the fence that borders a future construction site of the new tunnel along the West Side Highway in Manhattan.
October 2023: Our fence wrap installation with Art at Amtrak in Manhattan.
The first two sections of the Hudson Yards Concrete Casing, which will connect the new tunnel into New York Penn Station, were completed in 2018. Here you can see the interior of the box tunnel that runs from underground in the block bordered by 10th and 11th Avenues and 30th and 33rd Streets. Construction of the Hudson Yards Concrete Casing – Section 3, the third and final section, started in November 2023 and will be complete in 2026.
Inside the completed sections of the Hudson Yards Concrete Casing.
Inside the completed sections of the Hudson Yards Concrete Casing.
Early construction on the first two sections of the Hudson Yards Concrete Casing, which will connect the new tunnel into New York Penn Station, was completed in 2018.
Early construction on the first two sections of the Hudson Yards Concrete Casing.
Early construction on the first two sections of the Hudson Yards Concrete Casing.
Early construction on the first two sections of the Hudson Yards Concrete Casing.
Portal to the North River Tunnel.
Exposed rebar in the North River Tunnel built in 1910.
Corrosion in the North River Tunnel accelerated by Superstorm Sandy in 2012.
Deterioration in the North River Tunnel built in 1910.
Deterioration in the North River Tunnel built in 1910.
Deterioration in the North River Tunnel built in 1910.
Deterioration in the North River Tunnel built in 1910.
October 2018: Saltwater from Superstorm Sandy corroding the walls that house copper cables and electrical wires in the North River Tunnel.
October 2018: Electrical cables in the North River Tunnel damaged by Superstorm Sandy in 2012.
The Portal North Bridge is a swing-span bridge that causes major bottlenecks and delays when it malfunctions during opening and closing for maritime traffic. Here you can see the open bridge. By 2027, it will be replaced with a high-level fixed span bridge.
October 2018: Early construction work on the Portal North Bridge. Workers are constructing the initial sections of a 222-foot utility “monopole” that will carry high-voltage transmission lines supplying power to Northeast Corridor trains in and out of New York.
September 2018: Early work on the Portal North Bridge involving the construction of a steel bridge to protect water utilities and move fiber optic cables that supply data to Wall Street.
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