On Mar 8, 3:37*pm, Roland Perry wrote:

In message
, at
06:26:44 on Mon, 8 Mar 2010, Mizter T remarked:

(Which reminds us once again what a shame it is there isn't a tunnel
linking to the Thameslink platforms from the tube).

I wonder why this wasn't done - a passageway linking the 'mezzanine'
level (above the Thameslink platforms but effectively a floor below
the ground floor of the rest of St P station) to the newly opened
passageway that links the NTH to the eastern side of St P would indeed
have been a useful thing.

But that's half inside and half outside the barriers. [...]

Yes, I knew that - I was actually envisaging there being a
subterranean gateline to the Thameslink platforms somewhere in the mix
too - my thought process was actually that the space required for such
a gateline array this might have been a factor in making such a
suggestion untenable.

[...] What you could
have there is a passage *below* the Thameslink platforms to the bottom
of the NTH escalators. It would be the same length as the passage from
those escalators to the Victoria Line.

OK. Hadn't thought of that before. I wonder if anything of the sort
was seriously considered. I imagine some such idea must have at least
come up in a brainstorming session at some point!


I wonder if there's something else lurking down there that's in the
way? Though most of the 'back-stage' stuff at St P appears to happen
above ground.

A river, or sewer or something, isn't it? Although that's at the south
end (where the tips of the Thameslink and Northern platforms are quite
close).

The River Fleet (aka the Sewer Fleet) apparently - something I wasn't
aware of until just now.

Well, if that's something that stood in the way of an easy shallow
underground passageway, then it's understandable.