Passenger Trains > Virtual Tour - Hudson Tunnel Project

An interesting overview of Hudson Tunnel Project

Apologies for the user error here
For some reason - I cannnot get the link to post. Go to YouTube.com and search for Hudson Tunnel Project

See my reply to myself below





Edited 4 time(s). Last edit at 03/04/26 05:10 by 30in2029.

https://youtube.com/watch?v=slP5zyoLpk4&si=QzE_0hMfMh3sSmbW

Or copy and paste this link into your browser

Posted from iPhone



Edited 1 time(s). Last edit at 03/04/26 05:16 by 30in2029.

Interesting they are building a vent plant. The existing tunnels do not use any forced ventilation in favor of the piston effect of passing trains. I think there's a fire mitigation rationale for this, but I am wondering if Amtrak will use it to run diesel in the tubes.

Just go to you tube and search for hudson tunnel proect...easier
 

Various stretches of the tunnel require differing TBM's and tunneling techniques, including reinforcing part of the Hudson River bed. 
I do wonder if these tunnels will have 3rd rail for emergency rescues as the current tunnels do. 

One of the info videos mentioned that the tunnel boring machine (TBM) will have to change types of cutting face three times for the different material it will encounter digging under the Palisades, under the river, and in Manhattan.

Watched video - neat. I am happy to hear that they will at least try to keep one of the original 1910 Hudson River Tubes open (repair one at a time, not both together), so that three are operable at any given time (e.g. the two new tunnels and at least one of the 1910 tubes. I thought they may close both of the original Hudson River tubes at the same time to refurbish and we wouldn't then really gain capacity till about 5 to 10 years AFTER the Gateway project was completed. 

Lackawanna484 Wrote:
-------------------------------------------------------
> One of the info videos mentioned that the tunnel
> boring machine (TBM) will have to change types of
> cutting face three times for the different
> material it will encounter digging under the
> Palisades, under the river, and in Manhattan.

Wow, I wonder how often that's happened on other projects.  I'd be really curious to see how they switch the things up, I'm guessing there's a way to remove parts of the cutting face from inside the TBM, I've just never seen how that's done.  Thanks for the heads up about the video, this is one of those projects where it'll be easy to say "why didn't we do this sooner?"  I know, politics, but still.  :(

Nathan

Can't edit my post, but I was just watching the video and they are switching out the TBMs entirely before going under the river.