The study of British and Irish roads - their construction, numbering, history, mapping, past and future official roads proposals and general roads musings.
There is a separate forum for Street Furniture (traffic lights, street lights, road signs etc).
Registered users get access to other forums including discussions about other forms of transport, driving, fantasy roads and wishlists, and roads quizzes.
You'd need a new overbridge at Barnsdale Bar, the bridge piers won't allow any more than 2 lanes plus possibly a HS on the northbound and only 2 lanes, no HS on the southbound.
Darrington Golf Club wouldn't be best pleased either.
Doable, and I don't play golf so screw 'em.
The real killer is needing a new viaduct at Wentbridge on this idea!
Improving the A1 from Darrington to Redhouse should be a priority, as this is a pathetic and dated stretch of road and even if it is a D3 expressway, this is a massive step forward. I can remember using this road 30 years ago and an accident at an at grade junction causing massive tailbacks.
Yet if you move one step nearer in to the bridge there seems to be quite a lot of space on both sides of the carriageway, obtainable if the steel barriers can be replaced by concrete ones flush with the piers:
Yet if you move one step nearer in to the bridge there seems to be quite a lot of space on both sides of the carriageway, obtainable if the steel barriers can be replaced by concrete ones flush with the piers:
Those bridge piers and 44 ton trucks really dont mix that well... There would need to be some intensive approach work done to get three lanes through there and still maintain the seperation and deflection zones on the approaches. They would replace the bridge as it would be safer and much easier in the long run. and let them run D3M and given them room to expand to hard shoulder running or DEW4 standard... that new standard of Dual 4 lane expressway that is to be coined
Yet if you move one step nearer in to the bridge there seems to be quite a lot of space on both sides of the carriageway, obtainable if the steel barriers can be replaced by concrete ones flush with the piers:
Those bridge piers and 44 ton trucks really dont mix that well... There would need to be some intensive approach work done to get three lanes through there and still maintain the seperation and deflection zones on the approaches. They would replace the bridge as it would be safer and much easier in the long run. and let them run D3M and given them room to expand to hard shoulder running or DEW4 standard... that new standard of Dual 4 lane expressway that is to be coined
Wait, you mean HE have finally realised that putting all that expensive infrastructure in the verges, with no thought given to future widening would be a waste of money?
You're having a laugh.
Patience is not a virtue - it's a concept invented by the dozy beggars who are unable to think quickly enough.
Gav wrote: ↑Fri Jun 18, 2021 22:40
Those bridge piers and 44 ton trucks really dont mix that well... There would need to be some intensive approach work done to get three lanes through there and still maintain the seperation and deflection zones on the approaches. They would replace the bridge as it would be safer and much easier in the long run. and let them run D3M and given them room to expand to hard shoulder running or DEW4 standard... that new standard of Dual 4 lane expressway that is to be coined
I wouldn't bet on it myself. HE have done this on the A1 in Gateshead, and similar things elsewhere
What happened to another A1 scheme, the dualling in Northumberland, where the A1 is still largely as it was in the 1950s and accidents and slow moving vehicles are a big problem?
Glenn A wrote: ↑Sat Jun 19, 2021 14:06
What happened to another A1 scheme, the dualling in Northumberland, where the A1 is still largely as it was in the 1950s and accidents and slow moving vehicles are a big problem?
Currently undergoing examination by the Planning Inspectorate:
Glenn A wrote: ↑Sat Jun 19, 2021 14:06
What happened to another A1 scheme, the dualling in Northumberland, where the A1 is still largely as it was in the 1950s and accidents and slow moving vehicles are a big problem?
Currently undergoing examination by the Planning Inspectorate:
Bryn666 wrote: ↑Thu Jun 17, 2021 11:09
It rather hopes the design consultants actually understand what a motorway is and don't end up making an A14 fudge again using TROs to get a 'similar' outcome.
Given that it will be A1(M) does it really matter?
It is not as if they're going to number it M1 is it? (threads passim)
Glenn A wrote: ↑Sat Jun 19, 2021 14:06
What happened to another A1 scheme, the dualling in Northumberland, where the A1 is still largely as it was in the 1950s and accidents and slow moving vehicles are a big problem?
Having travelled the A1 in Northumberland extensively since the 1970's I can assure you that it is not largely as it was back then. I remember just how dangerous it was around Alnwick, head on crashes were commonplace. North of Alnwick to the border traffic levels are low at about 10-12k.
Bryn666 wrote: ↑Thu Jun 17, 2021 11:09
It rather hopes the design consultants actually understand what a motorway is and don't end up making an A14 fudge again using TROs to get a 'similar' outcome.
Given that it will be A1(M) does it really matter?
It is not as if they're going to number it M1 is it? (threads passim)
It matters if the new road isn't protected from mainline accesses to development, yes. If it's built as an A road with a TRO there is nothing to stop a developer slapping a roundabout or traffic lights on the mainline, or utilities to stick gas mains there. The A14 theoretically could have this problem! Yes, I am aware they've done this to the M181 anyway but that's not nationally significant.
They wouldn't be renumbering it to M1 anyway, it's south of Hook Moor.
Bryn Terminally cynical, unimpressed, and nearly Middle Age already. She said life was like a motorway; dull, grey, and long.
JRN wrote: ↑Wed Jun 16, 2021 22:55A2 Brenley Corner
Hopefully this is a realignment making the M2 / A2 the through traffic here, maybe a semi-directional T? Would be disappointing if it just improved the current junction at its current location, even if added freeflow.
And of course in an ideal world the M2 would be extended...
You should probably adjust your expectations to something more like signalisation and small scale widening of the roundabout and approaches.
Very disappointing. I suppose I should have known any extension of the M2, even by a few hundred metres to make it run straight though, was unlikely, but freeflow between the major movements (M2/A2) here seems necessary.
The main movements (which are between the M2 and A299) are already freeflow. Of course M2 to A2 should also be freeflow.
I think there's a reasonable chance they'll at least make the left turn freeflow. There's no real need for Brenley Lane to have direct access to the roundabout when it has access to the nearby Canterbury Road onslip.
Chris5156 wrote: ↑Wed Jun 16, 2021 23:40
You should probably adjust your expectations to something more like signalisation and small scale widening of the roundabout and approaches.
Very disappointing. I suppose I should have known any extension of the M2, even by a few hundred metres to make it run straight though, was unlikely, but freeflow between the major movements (M2/A2) here seems necessary.
The main movements (which are between the M2 and A299) are already freeflow. Of course M2 to A2 should also be freeflow.
I think there's a reasonable chance they'll at least make the left turn freeflow. There's no real need for Brenley Lane to have direct access to the roundabout when it has access to the nearby Canterbury Road onslip.
I came up with this, admittedly, overkill sketch for this a while back.
Attachments
Bryn Terminally cynical, unimpressed, and nearly Middle Age already. She said life was like a motorway; dull, grey, and long.
Gav wrote: ↑Fri Jun 18, 2021 22:40
Those bridge piers and 44 ton trucks really dont mix that well... There would need to be some intensive approach work done to get three lanes through there and still maintain the seperation and deflection zones on the approaches. They would replace the bridge as it would be safer and much easier in the long run. and let them run D3M and given them room to expand to hard shoulder running or DEW4 standard... that new standard of Dual 4 lane expressway that is to be coined
I wouldn't bet on it myself. HE have done this on the A1 in Gateshead, and similar things elsewhere
There's clearly space for three full width lanes there. They could protect and infill the supports with new concrete as on the current A19 widening scheme. It wouldn't even be a tight fit like the A1.
As for the Doncaster bypass, I just find it very hard to see that they'd undertake the demolition required for online D3M, or put a new build motorway through what is essentially an urban area, when there's the much more cost effective and less destructive alternative of A3ALR.
As mentioned many times before, southbound freeflow into the A1(M) will also be required - and in a bout of optimism, I think it actually will be provided, as it's already a dominant movement and the "M1 bypass" relies on it. It will be a bit of a similar situation to the M1/A1(M) upgrade, which included the Lofthouse freeflow.