Looking at the alignment that gateway is taking, with three curves.
Why isn't it next to the current tunnels?
Why isn't it next to the current tunnels?
The Draft Environmental Impact Study (DEIS) for Gateway tunnels was issued in June 2017. Four alternatives for alignments under the Hudson River and the Palisades. Option 1 would have the new tunnels run close to the existing tunnels with a ventilation site near the Lincoln Tunnel Helix. This option would have required a construction staging site within the Lincoln Tunnel Helix, thus displacing New Jersey Transit's Weehawken bus storage site, which would have a negative impact on the operation of buses to the Port Authority Bus Terminal. Option 2 would have the new tunnels run further south than the first option, with a shaft site north of 19th Street near JFK Boulevard East. This option would require the acquisition and demolition of an existing multi-story office building to build the shaft site. The third option would be further south with a shaft site south of 19th Street. This option would preclude the development of a portion of a planned residential development under construction at 800 Harbor Boulevard. The fourth option would be further south with a shaft site south of 18th Street–following the same horizontal alignment identified in the ARC FEIS. Alignment Option 4 was chosen for the build alternative even though it would have a slightly longer tunnel than in the other alternatives. Because of the additional length, there would be additional tunneling costs for this option. However, the first three options have greater pre-construction risks, meaning that if construction was delayed the cost difference would be minimized. In addition, Option 4 does not have the issues that the first three options have.