"Paul Scott" wrote in message
...
"CJB" wrote in message

....The new up
line is merged to the previous down, and the new down is on the new
formation. The slew is quite long so trains can proceed quite fast
and without stopping. The old rails of the previous up line are very
rusty even from a few days of non-use. CJB.

You need to look again I'm afraid.
From a down train you can clearly see three lines, the temporary up, and
the
two original. The remnants of the old up line are significantly longer
than
the remaining length of down line though, for obvious reasons...

Yep, that's exactly what I was about to report. The "slight detour" is
hardly noticeable. My journeys don't seem to have been affected at all.