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IRT Bronx Express

Tunneling Mining for Second Avenue Subway Continues

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2ndAve.jpg

 

After completing the excavation of the first of two tunnels earlier this year, a Tunnel Boring Machine (TBM) has begun mining the second (east) tunnel for the Second Avenue Subway. Starting again from 92nd Street, this second tunnel will be 7,800 linear feet long.

 

On its journey, the second tunnel will make a tight, westerly curve into the existing 63rd Street Station. Once completed, the tunnel will receive the concrete lining which provides the permanent tunnel structure.

 

Read more here.

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Call me when Phase II is done.

 

The first tunnel has already been dug. Be glad that something actually has been dug.

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Was the first tunnel dug right into either level of 63rd st?

 

I don't think so; I read somewhere that the turn radius was too tight in the first run (I believe the connection will be built using conventional methods); the second run (the one under way), however, will have enough clearance to mine up to Lex/63 IINM.

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Both G3 and G4 are OoS at the moment. Trains that used to be stored up there are now stored on the express tracks at 49th st. Its amazing how the IND/BMT don't have enough room in yards to store their trains while in the IRT there's room now for all their trains.

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