IRT Bronx Express Posted March 28, 2011 Share #1 Posted March 28, 2011 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. Link to comment Share on other sites More sharing options...
3rd Avenue El Posted March 28, 2011 Share #2 Posted March 28, 2011 have they reached any milestones lately excavating like the downtown line extension or do they not achieve any milestones yet? Link to comment Share on other sites More sharing options...
Art Vandelay Posted March 29, 2011 Share #3 Posted March 29, 2011 Completion doesn't count as an important milestone? Link to comment Share on other sites More sharing options...
Nova RTS 9147 Posted March 29, 2011 Share #4 Posted March 29, 2011 Completion doesn't count as an important milestone? Call me when Phase II is done. Link to comment Share on other sites More sharing options...
Vistausss Posted March 29, 2011 Share #5 Posted March 29, 2011 Call me when Phase II is done. The first tunnel has already been dug. Be glad that something actually has been dug. Link to comment Share on other sites More sharing options...
TwoTimer Posted March 29, 2011 Share #6 Posted March 29, 2011 Was the first tunnel dug right into either level of 63rd st? Link to comment Share on other sites More sharing options...
Bonanza123d Posted March 29, 2011 Share #7 Posted March 29, 2011 Dont know. Expect the return of the shortly after Phase I. Link to comment Share on other sites More sharing options...
Concourse Express Posted March 29, 2011 Share #8 Posted March 29, 2011 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. Link to comment Share on other sites More sharing options...
TwoTimer Posted March 30, 2011 Share #9 Posted March 30, 2011 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. Link to comment Share on other sites More sharing options...
Bonanza123d Posted March 30, 2011 Share #10 Posted March 30, 2011 Agreed. I am hoping they would get another TBM to go south while the other went north. I did not get that. Link to comment Share on other sites More sharing options...
Roadcruiser1 Posted March 30, 2011 Share #11 Posted March 30, 2011 Link to comment Share on other sites More sharing options...
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