The Palisades Tunnel Project will construct the first mile of twin-tunnels on the New Jersey side of the Hudson River.
The Palisades Tunnel Project is the first tunnel boring project of the Hudson Tunnel Project (HTP).
The project includes boring two parallel tunnels approximately 5,100 feet long with an inside diameter of 25 feet 2 inches and six cross passages, as well as furnishing and installing a concrete tunnel lining with waterproofing membrane.
It also involves building the new Hudson County Shaft, which will be used to remove the tunnel boring machines (TBMs) when digging is complete.
Tunnel Boring Machines
Tunnel boring machines will excavate the tunnels through the rock formations of the Palisades. Each TBM measures nearly 30 feet tall and 350 feet long. They will use rotating cutterheads to dig through approximately 1,230 cubic yards of rock.
Quick Facts
Project Purpose
- Construct the first mile of tunnels on NJ side of Hudson River
- Build shaft to remove the tunnel boring machines after completion
Notable Elements
- First tunnel boring project of the HTP
Contact Information
- Email: PalisadesTunnel@gatewayprogram.org