On Oct 8, 10:25 pm, "Paul Scott"
wrote:
"Abigail Brady" wrote in message

ups.com...

I was pondering a map the other day, and I noted quite how close
Moorgate and Cannon Street are. I guess the city widened lines to
Moorgate are a lost cause due to the planned work at Farringdon, but I
wondered whether it has ever been suggested to extend the Northern
City Line south of Moorgate and link up with the line at Cannon
Street, making Cannon Street into a through station. This would
allow, say, the extension of Northern City Line services to London
Bridge and points onward (possibly as part of the Thameslink network?)

Has this ever been suggested? Are they any especial difficulties
apart from the sheer cost of tunnelling in EC2. (Bank of England
vaults?, I can also imagine the gradient being a problem)?

Gradient would definitely be an issue, but isn't the Bank/Monument station
complex in the way of the direct route as well? Multilevel tracks and
station/escalator tunnels for Central/Northern/DLR and Drain, and
connections between the two stations. When DLR extensions have been
suggested in the past it is usually mentioned that the Bank of England
vaults are in the way too!

I trust you are looking at a geographical map rather than the 'tube map'
btw...


I think that the demolition of the Mansion House and the Bank of
England might be problematic. Probably not as problematic as diving
sharply enough from the viaduct that Cannon Street is on to get under
the whole Bank station complex. That could be a new record gradient.

Funnily enough, the buildings between Cannon Street and the Mansion
House have recently been demolished and something else is presumably
about to be built there, so I think that the chance has been missed.

The only remaining possibility would be to start tunnelling south of
the Thames and replace London Bridge and Cannon Street with new
underground stations. It could be called Crosslink or Thamesrail or
something.