Jonn Elledge wrote:
"Chetoph" wrote...
The idea of linking stations up in London is a good idea but it's
probably best to start of with closer links rather than starting with
two substantially far away from each other. Linking Moorgate to Cannon
Street and Waterloo to Waterloo East (or destroying it) would offer
plenty of benefits. Yes they would be complicated and expensive, but
I'm sure (well guessing) that they would be under or the same price as
Crossrail.

Not sure about the Waterloo one - a line already exists, but I'm not sure
how much use it is - but from discussions I've seen here in the past, the
Moorgate to Cannon Street is a non-starter: there's too much difference in
height, and the Bank of England vaults in the way.

Would it be possible to run a line slightly further east, from Moorgate
under Throgmorton, perhaps with new Bank/Moorgate platforms somewhere around
Birchin Lane, to a new underground station at the eastern end of London
Bridge station,

The main obstacle in that area is not vaults nor gradients - it's
foundations! Many City buildings (especially the taller ones) have
foundations that go down a very long way, preventing any tube line from
getting through.

A new underground station at the eastern end of London Bridge station
could also be a problem for the same reason. All those new
groundscrapers around Tooley Street may prevent the construction of any
new tunnels.

The only possible route I can see (apart from beneath the existing
lines) is under Gracechurch Street and Bishopsgate, giving interchange
with Liverpool Street station instead of Moorgate. I don't know how
easily it could be linked to Old Street, though.

with a portal somewhere in the vicinity of Southwark Park
Road. The line could take over services on the East Dulwich line. There may
even be room for a new stop somewhere around the bottom of Bermondsey
Street, as that area's not brilliantly served by the tube. (Yes, I'm biased
because I live in it, so sue me.)

If you're going to link it to the East Dulwich line, it would be better
to make it more direct. Instead of detouring through South Bermondsey
and Peckham, it could go south through Walworth, Camberwell and
Denmark Hill.