Junctions that are Incomplete / that left space for a flyover

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OliverH
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Junctions that are Incomplete / that left space for a flyover

Post by OliverH » Thu Sep 23, 2021 22:29


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Re: Junctions that are Incomplete / that left space for a flyover

Post by A320Driver » Thu Sep 23, 2021 23:20

First one that springs to mind is Podimore on the A303. Also plenty of examples across ‘new towns’ e.g. Skelmersdale.
I’m sure there are dozens more
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Re: Junctions that are Incomplete / that left space for a flyover

Post by sydneynick » Fri Sep 24, 2021 02:19

One that even I know about is the northern end of the M23.
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Re: Junctions that are Incomplete / that left space for a flyover

Post by BigBazz » Fri Sep 24, 2021 06:36

Obligatory mention of what should have been M1 Junction 3, but never progressed beyond forming the access to London Gateway Services: https://www.google.co.uk/maps/@51.63496 ... a=!3m1!1e3

Staples Corner, where the M1 was supposed to continue further into London: https://www.google.co.uk/maps/@51.57314 ... a=!3m1!1e3

And the junction for Hoddesdon on the A10, which should have been an interchange with Ringway 4: https://www.google.co.uk/maps/@51.76493 ... a=!3m1!1e3

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Re: Junctions that are Incomplete / that left space for a flyover

Post by M4Simon » Fri Sep 24, 2021 07:08

Where the A627(M) crosses the M62 - https://goo.gl/maps/PVuFULL15bxK96cy6

Stansted Airport (strictly an underpass not a flyover) - https://goo.gl/maps/xyBMPvjQwHySgar98 The A120 junction immediately southwest was also originally built without a flyover, but the flyover that was built (carrying the airport exit route over the A120) is not the one originally planned, which would have carried the eastbound A120 over the airport access road, with the airport road being the main line through the junction.

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Re: Junctions that are Incomplete / that left space for a flyover

Post by Steven » Fri Sep 24, 2021 07:37

The entire A4150, with every junction along it.
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From the SABRE Wiki: A4150 :


The A4150 (also known as the Wolverhampton Inner Ring Road) forms a loop of the city centre of just over two miles, meeting the vast majority of the radial routes heading into the city centre.

It is entirely dual carriageway throughout its length, and the individual sections (except one) are named after nearby churches. The number A4150 does not appear on any signs throughout its length, and indeed is only used at the nearby roundabout junction between Waterloo Road

... Read More

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Re: Junctions that are Incomplete / that left space for a flyover

Post by KeithW » Fri Sep 24, 2021 08:48

The A174 was expected to gain a flyover over the A19 when it was extended to the east but it never happened. When an extension was finally built it was as a rather more modest access road leading to Ingleby Barwick but the remnants of the earthworks for the expected flyover are still there.

https://www.google.co.uk/maps/@54.52889 ... 6656?hl=en

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Re: Junctions that are Incomplete / that left space for a flyover

Post by ForestChav » Fri Sep 24, 2021 09:28

Another obvious one - or two depending how you look at it - is at King's Lynn, the first still doesn't have a flyover of any sort, where the A17 ends on the A47, the second does now have a S2 flyover across the main island at the Hardwick roundabout, but isn't the originally planned presumably D2 flyover into the A47, and also ends up at a smaller roundabout to take the roads from the main one.

No-one's mentioned the incomplete junction on the M53 yet either where it used to change to the M531.
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Re: Junctions that are Incomplete / that left space for a flyover

Post by WHBM » Fri Sep 24, 2021 09:37

Large number of stubs all along the M8 through Glasgow allowing for elements of the Glasgow Highway Plan that didn't come to fruition.

For me there are two definitions. "Future proofed" is where there is just space provision, commonly grassed over, between or besides the carriageway. "Stubs" are where there is actual road surfaced provision for a turnoff. Sometimes they are still there because a different alignment was done, more commonly because nothing was built at all. Future proofing/stubs have a high likelihood, it now transpires, of never being used, which makes the associated cost, even of just land purchase, wasted.

Some stubs were sufficiently substantially built that they have structures etc that are never used. The M53 at Hooton, Wirral, where it was once to turn towards Wales, has now had the bridge removed, but still slaloms under where it was. And then there's the "ski jumps" on the M8 at West Street in Glasgow, or the viaducts over nothing at the bottom of the M11 in East London.

Incomplete structures and routes always seem to have a certain fascination. The London Underground has a considerable number around the network as well.

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Re: Junctions that are Incomplete / that left space for a flyover

Post by MikeB55 » Fri Sep 24, 2021 11:21

There is one junction I know well which had provision for a flyover for many years, but the flyover wasn't added until 2015.

It is Penn Inn, just outside Newton Abbot on the A380.

Does anyone know when the Kingsteignton/Newton Abbot bypass was originally built?

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Re: Junctions that are Incomplete / that left space for a flyover

Post by kiran_mk2 » Fri Sep 24, 2021 11:35

A38 / A442 on the Droitwich ring road was the classic one for me having grown up in the area

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Re: Junctions that are Incomplete / that left space for a flyover

Post by skiddaw05 » Fri Sep 24, 2021 11:54

Pullover roundabout, King's Lynn. Built in the 70s but the had to delay the flyover to give time for the earth banks to settle. I wonder if they are ready now?

(And as an aside note the strange number-free direction sign)


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Re: Junctions that are Incomplete / that left space for a flyover

Post by WHBM » Fri Sep 24, 2021 13:26

Those residual stubs are the opposite. Those flyovers were actually built in the late 1960s, but demolished 30 years later, for a reason I can't see. I believe there was some turf war over their maintenance between different authorities.

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Re: Junctions that are Incomplete / that left space for a flyover

Post by Peter Freeman » Fri Sep 24, 2021 13:43

WHBM wrote:
Fri Sep 24, 2021 09:37

For me there are two definitions. "Future proofed" is where there is just space provision, commonly grassed over, between or besides the carriageway. "Stubs" are where there is actual road surfaced provision for a turnoff.
Sometimes referred to as 'passive' and 'active' future-proofing.

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Re: Junctions that are Incomplete / that left space for a flyover

Post by Chris5156 » Fri Sep 24, 2021 14:33

OliverH wrote:
Thu Sep 23, 2021 22:29
here is the first: https://www.google.co.uk/maps/@51.15674 ... a=!3m1!1e3
In which case the second is surely the matching one at the other end of the Alton bypass!

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Re: Junctions that are Incomplete / that left space for a flyover

Post by DB617 » Fri Sep 24, 2021 14:59

A4232 at the eastern end of the Queens Gate/Butetown tunnel actually has a flyover stub that has now been rendered probably useless by the simple at-grade roundabout interface across the other side. Clearly the decision was made that the Cardiff ring road would never be completed as a grade separated road. Rover Way/Lamby Way roundabout also has a really, really big splay on its northern side to accommodate the future hopes for a ring road - now never to be completed as it was envisioned.

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Re: Junctions that are Incomplete / that left space for a flyover

Post by KeithW » Fri Sep 24, 2021 15:06

There is an example of a stub on the A66/B6279 roundabout here. As I recall the intention was to extend the B6279 to Teesside Airport along the line of the old railway to the A67.

https://www.google.co.uk/maps/@54.53118 ... !1e3?hl=en

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Re: Junctions that are Incomplete / that left space for a flyover

Post by Bryn666 » Fri Sep 24, 2021 15:33

https://goo.gl/maps/cQ7QMxGmifpxpSBz6

A million SABRE pounds (cash value: 1 pint) to anyone who can explain why this stub was built on the M65 as part of the 1997 extension. None of us have ever found an answer in an archive and there's nowhere obvious (well, not without huge disruption to the roads involved back in 1997) for it to connect to.
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Re: Junctions that are Incomplete / that left space for a flyover

Post by Bfivethousand » Fri Sep 24, 2021 15:54

Because someone somewhere thought Junction 2 of the Coventry Ring Road could potentially be made even more complex!
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