D A Stocks wrote:
"Basil Jet" wrote in message
...

Apparently a new avoiding slip from M25 E/B to A10 N/B is being
constructed.

https://highwaysengland.co.uk/our-wo...-improvements/

But my question is about what is (or was) there before the work. For years
there has been a weird lay-by on the northbound A10 just north of the M25,
weird because you can only get into it by stopping on the dual carriageway
at the end and reversing in.

Looking at some old maps online it's not completely out of order for it to
be a remnant of the A10 from before the M25 was built. Also, J24-25 opened
over two years before J25-27 so it could be the remains of a temporary
junction.

This kind of thing is quite common; here is a slip road on the A23 that was
built but never opened to traffic:



--
DAS



Although not the case in the OP’s example on the M27 there are some similar
features which is where
Meon services were going to be built. They never were but the slips were
and it is also the reason for the very long slips to and from junction 9 as
the service area entrances were going to be off those rather than the
Motorway direct .
Though it now hard to see the actual entrances due to vegetation they can
be made out.

https://goo.gl/maps/HZPw6ViY7U9e5u6B8

The idea of a service area or even just one for lorries en route to the
nearby Ports of Southampton and Portsmouth was still on the back burner to
the extent the never used East bound exit was resurfaced and tidied up
early 2018 which is why on this aerial view you have a nice road with lane
markings leading to some bushes.

Dropped pin
https://goo.gl/maps/syaFu1Fsf75bqzix7

Of course Department of Transport like most government bodies loves to
waste taxpayers money
and within a month or two started work on turning that section of the M27
into a Smart Motorway and installed foundations for the overhead gantries
through the newly relaid tarmac thereby making its refurbishment just in
case it is needed in future a waste of Money.


GH