In message , at 12:31:49 on
Wed, 19 Jun 2019, Recliner remarked:

Are you talking about the earlier plan where the existing M4 M25
junction was half-removed and replaced by a weird junction further west?
The picture in the BBC article seems to be describing not that, but a
different plan where the M25 keeps its present horizontal alignment.

It's being moved slightly to the west, but not enough to change the M4
junction. You can see the curve to the new diverted alignment in one
of the images in these articles:

"Images released by the airport indicate that the M25, which widens to
12 lanes past Heathrow, would be rebuilt in a tunnel west of its
present route.

Two openings in the tunnel between the taxiways and runway would
improve stability, ventilation and visibility on the road."

https://www.thetimes.co.uk/article/h...over-m25-in-30
-year-expansion-f58v9f2ts?shareToken=3416809e5a92ad594cefa79d3391e 8a7

If anything, that shows the M25 bending slightly east, straightening the
existing alignment between J14 and J15.

https://www.thesun.co.uk/news/931931...pansion-reveal
ed-third-runway-finished-2026/

The map and artists impression there aren't even consistent (at the
granularity of the width of a 6+6 lane motorway).
--
Roland Perry