Gateway Development Commission

The Hudson Tunnel Project is a massive, complex project. To get it done, GDC has split construction into 10 distinct projects. Many of these could be called megaprojects on their own! Watch this video to learn how 10 projects come together to make one new tunnel: www.youtube.com/watch?v=slP5...

We had an amazing time at the Liberty Science Center this weekend! We brought our tunnel boring machine model and lots of educational activities to teach visitors of all ages about the science behind the Hudson Tunnel Project. Thank you, LSC, for organizing such a great event!

The tunnel boring machines building the new rail tunnel between New York and New Jersey are each longer than an entire football field, including both end zones 🏈 No matter who you cheer for on Sunday, everyone can agree: a modern tunnel that will make train travel better is something to root for!

The outside of the new tunnel tubes, called the tunnel lining, is made of rings of interlocking concrete segments. It will take more than 4,100 rings – made from over 24,000 segments – to make the lining of both tubes!

There are two new ways to stay up to speed on the Hudson Tunnel Project! GDC is now on Facebook and Instagram. Follow us for photos and videos from our construction sites, updates on our progress, and more! Facebook: www.facebook.com/profile.php?... Instagram: www.instagram.com/gatewaycommi...

Can’t get enough of our tunnel boring machines? Check out our newest EarthCam to watch as the first machine begins tunneling and we finish assembling the second. Go to www.gatewayprogram.org, scroll to the Palisades TBM Launch Box camera, then click on Camera 2. New photos are posted every day!

Tunnel boring has started! After years of preparation, our first tunnel boring machine is getting to work, carving through the Palisades to build the first mile of the new rail tunnel’s northern tube. A second machine will start building the southern tunnel tube soon.

Tunnel boring machines do a lot more than just dig. They are underground factories that drill through the earth and build the tunnel tubes, positioning pre-cast concrete segments to form rings that lock together to make the tunnel lining. Who would have guessed that boring could be so interesting?

We’ve come a long way since crews dug the North River Tunnel by hand. @colleenonthescene.bsky.social dug deep into the history of the North River Tunnel for @northjerseynews.bsky.social to explain how tunneling has changed over the past 100 years. Spoiler alert: it's a lot easier with TBMs!

The tools and innovations to dig under the Hudson River dramatically improved since the Pennsylvania RR did it in 1906. But both projects share some similar challenges. Also we unearthed dozens of archival photos - check it out ⬇️

ICYMI: Yesterday we celebrated the start of tunnel boring for the Hudson Tunnel Project! This video explains the first phase of tunneling and how tunnel boring machines dig and build the tunnel at the same time.

Our first tunnel boring machine is ready to launch! Check out everything that went into bringing this massive machine to life, from manufacturing and testing it in Germany to reassembling it on site in the launch box. This moment has been years in the making. Now it’s time to start digging!

Today we made history! After years of work, we celebrated the start of tunnel boring for the Hudson Tunnel Project. Reaching this major milestone sends a clear message: we are delivering the reliable, modern rail system riders deserve. Learn more here: www.gatewayprogram.org/wp-content/u...

GDC will hold a public Board meeting on Tuesday, September 29, 2026, at 10:00 A.M. Those wishing to participate virtually may submit written or pre-recorded video statements no later than Monday, September 28, 2026, at 5:00 P.M. Thank you to those who have already done so.

The Gateway Development Commission will hold a public Board meeting on September 29, 2026, at 10:00 A.M. Registration and public comment information can be found here: www.gatewayprogram.org/board-meetin...

The Hudson River Ground Stabilization project is mixing concrete into the Hudson riverbed to make the ground firm enough for our tunnel boring machines to dig through. This takes a lot concrete mix. 208,000 cubic yards, to be exact. That’s enough concrete to build a sidewalk from NYC to Chicago!

Tunnel boring machines are heavy hitters! Each machine weighs 1,680 tons – about as much as 300 large African elephants 🐘

It was a busy summer for the Hudson Tunnel Project! Our fall newsletter covers construction progress, tunnel boring preparations, and programming at our Community Engagement Centers. Read the newsletter here: mailchi.mp/gatewayprogr...

News 12’s Tom Krosnowski stopped by our New Jersey Community Engagement Center for an inside look at the Hudson Tunnel Project. Watch the clip to take a peek at the interactive exhibits in the center and get up to speed on our progress.

Happy Labor Day! 🛠️ Today, GDC celebrates the skilled workforce that moves the Hudson Tunnel Project forward across New York and New Jersey. Hundreds of workers bring their dedication and expertise to our construction sites every day. Their commitment and hard work will keep our region moving!

Building each of the new tunnel tubes under the Hudson River requires more than 2.3 miles of tunnel boring. That’s a total of almost five miles for both tubes – longer than 90 north/south blocks in Manhattan!

GDC will hold a virtual public Board Meeting tomorrow, Monday, August 24, 2026, at 11:00 A.M. More information, including instructions on how to watch the meeting live and provide public comment, is available here: gatewayprogram.org/board-meetin...

We’re building floodwalls around the tops of the access shafts in Weehawken and Manhattan to prevent stormwater runoff from flowing into them. This is a big project – each shaft is roughly 400 feet around!

This summer, GDC’s Community Engagement Centers became hands-on classrooms during our STEM exploration days 🔍 Students learned about the work behind building a new train tunnel. With guidance from project experts, they planned and built their own model tunnels 🚆

The Gateway Development Commission will hold a virtual public Board Meeting on Monday, August 24, 2026, at 11:00 AM. Information about the meeting, including instructions on how to watch the meeting live and provide public comment, is available here: gatewayprogram.org/board-meetin...

GDC's board meeting scheduled for August 19, 2026 is canceled and will be rescheduled. Notice of a new date and time will be provided in accordance with the GDC Act and GDC Bylaws and Open Meetings Policy. Additional details will be shared on our website when they are available.

The Hudson Yards Concrete Casing - Section 3 team completed two major concrete pours in July. Over two 18-hour pours, crews placed more than 5,500 cubic yards of concrete for the roof of this section of the tunnel. Learn more about HYCC-3 at www.gatewayprogram.org/hudson-yards...

The Gateway Development Commission will hold a virtual public Board Meeting on Wednesday, August 19, 2026, at 11:30 AM. Information about the meeting, including instructions on how to watch the meeting live and provide public comment, is available here: gatewayprogram.org/board-meetin...

“I’ve always wanted to teach history, and now I get to make history.” Members of @weareliuna.bsky.social Local 472 are preparing for tunnel boring at the Palisades Portal. They shared what the opportunity to work on the Hudson Tunnel Project means to them.

Our Chief of Program Delivery and Chief Engineer took CNN’s Richard Quest on a tour of our construction site in the Hudson River to explain the ground stabilization work we’re doing to prepare the riverbed for tunnel boring. Watch the segment to learn more about this important work!

In the 1800s, dirt and rubble were used to extend Manhattan’s shoreline. To prepare for tunnel boring through this fill, we’re installing pipes in Hudson River Park that will circulate cold brine underground, freezing the loose material into a solid block that is easier to tunnel through.

GDC's board meeting on July 28, 2026 is canceled and will be rescheduled. Notice of a new date and time will be provided in accordance with the GDC Act and the Commission Bylaws and Open Meetings Policy. Additional information will be shared on our website when it is available.

The Gateway Development Commission will hold a public Board Meeting on July 28, 2026, at 10:00 A.M. Registration and public comment information can be found here: www.gatewayprogram.org/board-meetin...

While the tunnel boring machines are assembled, crews are building access shafts in NY and NJ that will enable workers on the surface to support construction deep underground. Workers are currently installing the cap beams around the top of the shaft walls. Next step: excavation.

Two years ago today, GDC signed the Full Funding Grant Agreement for the Hudson Tunnel Project. You can see the progress we've made since then on both sides of the Hudson River, and in it. We're getting the job done, and we won’t stop until we deliver the reliable infrastructure riders deserve!

GDC will hold a virtual public Board Meeting tomorrow, Wednesday, July 8, 2026, at 12:00 P.M. More information, including instructions on how to watch the meeting live and provide public comment, is available here: www.gatewayprogram.org/board-meetin...

GDC will hold a virtual public Board Meeting on Wednesday, July 8, 2026, at 12:00 P.M. More information about the meeting, including instructions on how to watch the meeting live and provide public comment, is available here: www.gatewayprogram.org/board-meetin...

The Gateway Development Commission will hold a virtual public Board Meeting on Wednesday, July 8, 2026, at 12 pm. Those who would like to provide live virtual public comment or submit a written or pre-recorded statement can find additional details here: gatewayprogram.org/board-meetin...

The Hudson Tunnel Project is more than infrastructure — it’s a real-world classroom. This year, GDC partnered with schools near construction sites to use the project to teach students about science, engineering, history, and more. We can’t wait to get back into classrooms in the fall!

We don't have to wait until the new tunnel opens to benefit from the Hudson Tunnel Project. In a new op-ed for ROI-NJ, NJ Chamber of Commerce President & CEO Tom Bracken explains how construction is already creating jobs and supporting businesses. Read the op-ed: www.roi-nj.com/2026/06/18/o...

The Hudson Tunnel Project is back on track and building momentum. From awarding new construction contracts to opening our second Community Engagement Center, the latest edition of our newsletter has all the updates. Read it here: mailchi.mp/gatewayprogr...

Curious about the Hudson Tunnel Project? Stop by one of our Community Engagement Centers in New York and New Jersey. Explore interactive exhibits, step inside a model of the new tunnel, and talk with GDC staff. Plan your visit at www.gatewayprogram.org/community-engagement.html

Our newest construction camera just went live! Now you can see our progress building the tunnel launch box and assembling the first set of tunnel boring machines for the Hudson Tunnel Project in real time. Check it out at www.gatewayprogram.org

The Hudson Tunnel Project keeps moving forward. Today we awarded the contract for the New Jersey Surface Alignment Project, which will build the infrastructure to connect the new tunnel to the existing Northeast Corridor. Learn more at www.gatewayprogram.org/nj-surface-a...

GDC will hold a public Board Meeting on Monday, June 1, 2026, at 10:00 am. Those who would like to participate virtually must submit written or pre-recorded video statements by 5:00 pm today via www.gatewayprogram.org/board-meetin...

GDC will hold a public Board Meeting on Monday, June 1, 2026, at 10 am. Members of the public who would like to participate virtually may submit written or pre-recorded video statements no later than Sunday, May 31, 2026, at 5 pm. Thank you to those who have already done so.

The walls of the new tunnel tubes will be made of thousands of interlocking concrete segments. The segments for the section of the tunnel under the Palisades in New Jersey are being manufactured now at a factory in Connecticut. Completed segments will start shipping to New Jersey soon!

The Gateway Development Commission will hold a public Board meeting on June 1, 2026, at 10:00 A.M. Registration and public comment information can be found here: www.gatewayprogram.org/board-meetin...

Assembling tunnel boring machines is no small undertaking. Before these massive machines can begin digging, they have to be transported, delivered, and assembled. STV, part of the Hudson Tunnel Project delivery team, explains what goes into getting these complex machines ready to launch.

🚧Construction Update🚧 The HYCC-3 Project has entered a new phase: adding the roof to the tunnel box. We do this by filling the tunnel with sand and pouring concrete over it, then removing the sand once the concrete hardens. The end result: a fully enclosed box trains can travel through.

Our Chief Engineer has worked on tunneling projects all over the world. Hear him explain what it takes to tunnel through the Palisades cliffs and see the progress we’re making on assembling the machines that will get the job done in this new report from @nbcnewyork.com