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Important-Ad1871 t1_j9uquw4 wrote

Dig a deep tunnel in stable ground. That’s what they’re doing on 2nd Ave. I don’t know if they can do it without enormous cost, though.

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akmalhot t1_j9wmljz wrote

You mean what they've been trying to do for a century ?

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Serious_Historian578 t1_ja57bhq wrote

Deep tunnels work for trains that people take stairs/elevators down into. It's not realistic for a road that people need to get on and off of

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Edwunclerthe3rd t1_j9x3pz1 wrote

I'm curious as to if this is easier or harder for queens, due to the geology. Manhattan is very close to bedrock while parts of BK Queens is up to 250 feet to bedrock

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