On Wed, 4 Jul 2007 18:38:11 +0100, Tom Anderson
wrote:

On Wed, 4 Jul 2007, Graeme Wall wrote:

In message
"Peter Masson" wrote:

"sweek" wrote in message
oups.com...

Wouldn't it be relatively cheap to lengthen the platforms even
further? With the high level of overcrowding now and even more
passengers using the route in the future, it seems like it will be
needed. 8 coaches seems like a good number indeed.

Getting a 4-coach platform length at Willesden High level will be
expensive, but do-able. To get 8 coaches here, because of the junction
with the City Goods Line, the only place is on a bridge over the WCML.

Not sure i buy that. How far is the junction from the present platforms?

The junctions should be far enough away but expansion in either
direction from Willesden Junction High Level involves intruding into
space occupied by bridges. I would have thought that the easier option
would be expansion northwards (possibly with some realignment) over
the DC line involving two new (or one wide) short bridges rather than
messing about with the relatively recently-installed bridge over the
WCML.
snip