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Re: 2nd Ave Subway Setback

Posted by LA Scott on Thu Jul 23 14:18:50 2009, in response to Re: 2nd Ave Subway Setback, posted by Grand Concourse on Thu Jul 23 14:08:10 2009.

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You cannot easily do this with a TBM.
Using one tube per track, you need a much larger space than with cut-and-cover.

It would probably be just as cheap (or cheaper) to build a 3rd avenue subway if the capacity is needed in the future.

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