Amtrak Gateway Tunnels

Discussion related to Amtrak also known as the National Railroad Passenger Corp.

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Re: Amtrak Gateway Tunnels

Postby east point » Thu Sep 28, 2017 1:58 pm

There is another factor that we including this poster forgot about boring the tunnel. Look at the profile posted elsewhere. The tunnel bores in NJ start above sea level. That enables when boring starts from NJ no problem of sea water. If starting from NY the first item will be punching thru the Hudson river retaining wall that is below sea level. Risk management would indicate the any collapse first encountered breaching the wall might flood NYPS. Whereas coming from NJ the TBM can snug up to the wall with all tunnel rings in place mitigating the possibility of any Hudson river / brackish water intruding.
east point
 
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