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| Re: The reason NYC stopped building subways (1537440) | |||
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Re: The reason NYC stopped building subways |
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Posted by JayZeeBMT on Thu Feb 6 08:58:52 2020, in response to The reason NYC stopped building subways, posted by Orange Blossom Special on Wed Feb 5 15:54:35 2020. On top of all that, look at the Second Avenue Subway. It is driven very deeply, compared to the earlier Dual Contracts lines, for example. Cut-and-cover is no longer practical for subway construction in today's Manhattan, which is fully developed.Then there's the added difficulty of tunneling through Manhattan schist, which is one reason ESA is taking forever to complete. Even in the boroughs, it's not so easy to accommoplish new tunneling. The Archer Ave. extension (both branches) adds up to a little over two miles, but that took more than a decade to build. The original IRT in Manhattan, by contrast, nine miles, was finished in just four years using 19th-century technology. |
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