wrote in message
...

What exactly needs to be safeguarded anyway?

As to clearances for knitting. Aren't all new structures built above
railway lines supposed to allow for a hypothetical future
electrification anyway? And whether that electrification is being done
for Crossrail or as a part of a more extensive GWML electrification
shouldn't surely make any difference to the physical clearances
needing to safeguarded above the line.

From the Crossrail site, you seem to have hit the nail on the head:

"Most land needed is already within the railway estate and the proposal is
to safeguard only such additional land as is necessary (for example works
sites adjacent to bridges that need to be raised) so as to minimise the
impact on adjacent development."

http://billdocuments.crossrail.co.uk...feguarding.pdf

Nice sounding press release last week, but little real content, now if the
actual safeguarding plans issued to planning departments were available
online...

Paul S