NYC's brand new subway is the most expensive in the world

Re:NYC's brand new subway is the most expensive in the world by ng12 on Sunday January 01, 2017 @08:05PM (#13298396)

> Berlin’s U55 line cost $250 million per kilometer, Paris’ Metro Line 14 cost $230 million per kilometer, and Copenhagen’s Circle Line cost $260 million per kilometer.

Are these useful comparisons? How can you possibly compare a train running the length of Manhattan to anything in Copenhagen? I want to know how much a new train line costs in Tokyo.

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Re:NYC's brand new subway is the most expensive in the world by lobster_johnson on Sunday January 01, 2017 @09:48PM (#13298736)

I wonder what those other cities are built on. The Second Ave subway's bedrock is schist [1] -- which is an extremely strong, durable type of rock.

A quick glance at this [2] engineering book indicates Copenhagen is limestone. Apparently the same is true for Paris. Any engineers here who want to chime in about how that affects cost?

[1] http://mobile.nytimes.com/2012/08/05/magazine/tunneling-belo...

[2] https://books.google.com/books?id=6UAqS62NJDMC&pg=PA2616&lpg...

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Re:NYC's brand new subway is the most expensive in the world by jessriedel on Sunday January 01, 2017 @08:42PM (#13298527)

> Tokyo Metro Fukutoshin Line: ¥250 billion for 8.9 km of new track. This is $280 million per km. Tokyo Metro has claimed future lines will be $500 million per km as a reason to not build future extensions.

https://pedestrianobservations.wordpress.com/2011/05/16/us-r...

Also note that Tokyo is much less dense than Manhattan. A better comparison would be Hong Kong, except that labor and other costs there will be dramatically less.

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Re:NYC's brand new subway is the most expensive in the world by jpatokal on Monday January 02, 2017 @01:21AM (#13299430)

Incorrect: Central Tokyo is denser (15,146/km² in the 23 wards) than Manhattan (10,194/km²).

https://en.wikipedia.org/wiki/Special_wards_of_Tokyo

Note that the entirety of the Fukutoshin Line was within the 23 wards.

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Re:NYC's brand new subway is the most expensive in the world by jessriedel on Monday January 02, 2017 @09:51AM (#13301392)

Thank you for providing Central Tokyo's density; it is certainly the best comparison to Manhattan in Japan. However, you are incorrect about Manhattan's density, which is 27,812.2/km²

https://en.wikipedia.org/wiki/Manhattan

and therefore still significantly larger than Central Tokyo's 15,146/km². The 10,194/km² figure you quote is for all of New York City (all 5 boroughs)

https://en.wikipedia.org/wiki/New_York_City

which is to be compared with 6,225/km² for Tokyo Metropolis (i.e., the city proper, not the greater metro area, which is 2,662/km²).

https://en.wikipedia.org/wiki/Tokyo

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Re:NYC's brand new subway is the most expensive in the world by jbm on Monday January 02, 2017 @06:19AM (#13300514)

Wakoshi is in Saitama.

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Re:NYC's brand new subway is the most expensive in the world by jessriedel on Monday January 02, 2017 @10:00AM (#13301450)

Just to clarify for folks who don't know Tokyo: Wakoshi is the first stop on the new Fukutoshin line, and it is located in Saitama, which is not in the 23 wards composing Central Tokyo.

https://en.wikipedia.org/wiki/Tokyo_Metro_Fukutoshin_Line

However, it's only a single stop on the line; the other 15 stops are in Central Tokyo.

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Re:NYC's brand new subway is the most expensive in the world by pbz on Sunday January 01, 2017 @08:47PM (#13298540)

https://pedestrianobservations.wordpress.com/2013/06/03/comp...

Not exactly Tokyo, but in Seoul between $43m/km and $87m/km, Hong Kong $586m/km, Singapore $600m/km.

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Re:NYC's brand new subway is the most expensive in the world by herval on Sunday January 01, 2017 @08:09PM (#13298419)

The answer to your Tokyo question is in the "compendium of international subway projects", linked in the article (which also contains those numbers you quoted)

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Re:NYC's brand new subway is the most expensive in the world by jessriedel on Sunday January 01, 2017 @08:42PM (#13298523)

Why not just answer his question and link to it?

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