Black Dam Roundabout project moves a step closer

Black Dam Roundabout

Black Dam Roundabout

First published in News

A MULTI-MILLION pound scheme to transform a busy Basingstoke roundabout has moved a step closer after the borough council agreed to release £500,000 towards the project.

Construction work on the Government-backed £10million estimated project to improve the Black Dam Roundabout, connecting the M3 junction 6 slip road to the A339 is expected to start in July.

The project will see four lanes of northbound traffic routed into the centre of the roundabout as well as an additional two-lane arm added to the roundabout to allow motorists travelling on the A30 to join the centre of the new roundabout, easing congestion for people going into the town centre and on the A339.

The redevelopment scheme, which is part of the Government’s Pinch Point Programme, is also set to see the realignments and widening of all approaches, the installation of safety barriers, new traffic sign, signals and street lights.

Councillors on Basingstoke and Deane Borough Council’s Cabinet approved the release of £500,000 in support of the project and agreed to transfer council-owned land to Hampshire County Council to enable the work to begin. The land which will be transferred includes grassed areas near the Black Dam pond, London Road and an area of land off the A339.

As previously reported in The Gazette, the Highways Agency amended the original plans after staff carried out investigations into the scheme, and decided the new layout will offer more benefits for motorists.

The scheme is seen as a key part of plans by the borough council for the town to be seen as a leading business centre in the South East, and would complement its regeneration project at Basing View, which includes a new John Lewis at home and Waitrose store.

Comments (9)

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5:14pm Tue 10 Jun 14

jonone says...

Hmmm. I believe any improvements if we see them, but I doubt we will.

Capacity may be being improved on the roundabout itself, but not in any direction around it - for example, the M3 spur southbound leaves the roundabout with 3 lanes, only for them to close back to the original 2 a short distance later. Why could they not have three lanes all the way rather than create a new pinch point.

The vast majority of northbound traffic continues up the A339 and currently uses two lanes to do so. The new scheme will have - er - two lanes to do so, but now two lanes into the town centre, which has much lower traffic flow.

The huge delays southbound in the peak hour rushes north of the roundabout are caused by the traffic being stopped by lights. There will still be lights and four lanes at the roundabout will reduce the queues by very little.

And I pity any cyclist who tries to negotiate the roundabout whilst using the A30!

The whole scheme will benefit only the undertakers and too important to queue brigade, who have no qualms about queue jumping or throwing abuse and rule-abiding drivers.

Only a grade separated (two level) flyover or underpass for the north-south would really ease congestion. But we are too gutless for schemes like that.
Hmmm. I believe any improvements if we see them, but I doubt we will. Capacity may be being improved on the roundabout itself, but not in any direction around it - for example, the M3 spur southbound leaves the roundabout with 3 lanes, only for them to close back to the original 2 a short distance later. Why could they not have three lanes all the way rather than create a new pinch point. The vast majority of northbound traffic continues up the A339 and currently uses two lanes to do so. The new scheme will have - er - two lanes to do so, but now two lanes into the town centre, which has much lower traffic flow. The huge delays southbound in the peak hour rushes north of the roundabout are caused by the traffic being stopped by lights. There will still be lights and four lanes at the roundabout will reduce the queues by very little. And I pity any cyclist who tries to negotiate the roundabout whilst using the A30! The whole scheme will benefit only the undertakers and too important to queue brigade, who have no qualms about queue jumping or throwing abuse and rule-abiding drivers. Only a grade separated (two level) flyover or underpass for the north-south would really ease congestion. But we are too gutless for schemes like that. jonone
  • Score: 8

9:13am Wed 11 Jun 14

lloydjs says...

Can there not be an 'artist impression' of this uploaded to see what it may look like. I find it difficult to visualize.
Can there not be an 'artist impression' of this uploaded to see what it may look like. I find it difficult to visualize. lloydjs
  • Score: 1

9:58am Wed 11 Jun 14

cybersheeep says...

lloydjs wrote:
Can there not be an 'artist impression' of this uploaded to see what it may look like. I find it difficult to visualize.
I'm surprised the Gazette didn't link to it already, but there's a basic picture of the proposal in the previous article, from April, here:

http://www.basingsto
kegazette.co.uk/news
/11123565.Multi_mill
ion_pound_scheme_to_
transform_roundabout
_has_been_altered/

I agree with Jonone, that I doubt this "upgrade" will offer much improvement to overall traffic flow. Every morning I go southbound to the M3 and there's a lot of congestion coming up to the roundabout. Every evening I go in the opposite direction and see just as much congestion going southbound. I don't see how these plans address that at all. But I'll be very happy if I'm proven wrong.
[quote][p][bold]lloydjs[/bold] wrote: Can there not be an 'artist impression' of this uploaded to see what it may look like. I find it difficult to visualize.[/p][/quote]I'm surprised the Gazette didn't link to it already, but there's a basic picture of the proposal in the previous article, from April, here: http://www.basingsto kegazette.co.uk/news /11123565.Multi_mill ion_pound_scheme_to_ transform_roundabout _has_been_altered/ I agree with Jonone, that I doubt this "upgrade" will offer much improvement to overall traffic flow. Every morning I go southbound to the M3 and there's a lot of congestion coming up to the roundabout. Every evening I go in the opposite direction and see just as much congestion going southbound. I don't see how these plans address that at all. But I'll be very happy if I'm proven wrong. cybersheeep
  • Score: 5

10:20am Wed 11 Jun 14

bobstert says...

the highways agency version of the "upgrade" is here http://assets.highwa
ys.gov.uk.s3.amazona
ws.com/roads/road-pr
ojects/m3-junction-6
-black-dam-roundabou
t-improvements/PP_pr
oposed%20layout.pdf

it looks like the same pic but better resolution and you can zoom in easier
the highways agency version of the "upgrade" is here http://assets.highwa ys.gov.uk.s3.amazona ws.com/roads/road-pr ojects/m3-junction-6 -black-dam-roundabou t-improvements/PP_pr oposed%20layout.pdf it looks like the same pic but better resolution and you can zoom in easier bobstert
  • Score: 4

2:15pm Wed 11 Jun 14

basingstoke26 says...

our wonderful council obviosly had money to spend one year, when they filled in all the bus stops and narrowed 3 appraoches to roundabouts to 2 and 2 to 1, Like the redevolpment of the old town centre, rather than spend the cash on making it better, we went for a second class town centre, the roundabout rejig smacks of money saving while not actually doing much, the exit from the M3 should go straight through the roundabout non stop, and the A30 junction should go over the top, that way we don't have any congestion, All they have done is park the cars in the middle of the roundabout while they wait for the lights, come on council, grow some and make it work efficently..
our wonderful council obviosly had money to spend one year, when they filled in all the bus stops and narrowed 3 appraoches to roundabouts to 2 and 2 to 1, Like the redevolpment of the old town centre, rather than spend the cash on making it better, we went for a second class town centre, the roundabout rejig smacks of money saving while not actually doing much, the exit from the M3 should go straight through the roundabout non stop, and the A30 junction should go over the top, that way we don't have any congestion, All they have done is park the cars in the middle of the roundabout while they wait for the lights, come on council, grow some and make it work efficently.. basingstoke26
  • Score: 1

4:45pm Wed 11 Jun 14

jonone says...

basingstoke26 wrote:
our wonderful council obviosly had money to spend one year, when they filled in all the bus stops and narrowed 3 appraoches to roundabouts to 2 and 2 to 1, Like the redevolpment of the old town centre, rather than spend the cash on making it better, we went for a second class town centre, the roundabout rejig smacks of money saving while not actually doing much, the exit from the M3 should go straight through the roundabout non stop, and the A30 junction should go over the top, that way we don't have any congestion, All they have done is park the cars in the middle of the roundabout while they wait for the lights, come on council, grow some and make it work efficently..
Maybe a double grade separation might have worked! The A30 runs non-stop across the bottom, the middle level has the interchange, and the M3/A339 runs over the top.

People balk at the expense and also try and use the excuse "but it is only at peak times!" But if peak times are now at full capacity, that still causes delays and if more houses are being built, businesses are being put off investment in Basingstoke. I know any road system will always have finite capacity, but we shouldn't be scared of investment or of the car. Moving cars pollute a **** sight less than stationary ones!
[quote][p][bold]basingstoke26[/bold] wrote: our wonderful council obviosly had money to spend one year, when they filled in all the bus stops and narrowed 3 appraoches to roundabouts to 2 and 2 to 1, Like the redevolpment of the old town centre, rather than spend the cash on making it better, we went for a second class town centre, the roundabout rejig smacks of money saving while not actually doing much, the exit from the M3 should go straight through the roundabout non stop, and the A30 junction should go over the top, that way we don't have any congestion, All they have done is park the cars in the middle of the roundabout while they wait for the lights, come on council, grow some and make it work efficently..[/p][/quote]Maybe a double grade separation might have worked! The A30 runs non-stop across the bottom, the middle level has the interchange, and the M3/A339 runs over the top. People balk at the expense and also try and use the excuse "but it is only at peak times!" But if peak times are now at full capacity, that still causes delays and if more houses are being built, businesses are being put off investment in Basingstoke. I know any road system will always have finite capacity, but we shouldn't be scared of investment or of the car. Moving cars pollute a **** sight less than stationary ones! jonone
  • Score: 4

8:18am Thu 12 Jun 14

JJ38JJ says...

jonone wrote:
basingstoke26 wrote:
our wonderful council obviosly had money to spend one year, when they filled in all the bus stops and narrowed 3 appraoches to roundabouts to 2 and 2 to 1, Like the redevolpment of the old town centre, rather than spend the cash on making it better, we went for a second class town centre, the roundabout rejig smacks of money saving while not actually doing much, the exit from the M3 should go straight through the roundabout non stop, and the A30 junction should go over the top, that way we don't have any congestion, All they have done is park the cars in the middle of the roundabout while they wait for the lights, come on council, grow some and make it work efficently..
Maybe a double grade separation might have worked! The A30 runs non-stop across the bottom, the middle level has the interchange, and the M3/A339 runs over the top.

People balk at the expense and also try and use the excuse "but it is only at peak times!" But if peak times are now at full capacity, that still causes delays and if more houses are being built, businesses are being put off investment in Basingstoke. I know any road system will always have finite capacity, but we shouldn't be scared of investment or of the car. Moving cars pollute a **** sight less than stationary ones!
You are really saying that a three-layer junction is the answer? Most motorway junctions are not three layer. In fact the only three layer junctions I can think of are where two motorways intersect.
Apart from the height that would be required the embankments and cuttings needed on the approach would use up a lot of land. Probably more than what is available. As for the cost - prohibitive by anyone's standards.
One thing that has always struck me as strange about that motorway junction is the fact that there is only one approach road. So even traffic going south towards Alton have to go north and on to the ring road adding to the Basingstoke traffic. Why not connect that junction to the A339 south?
[quote][p][bold]jonone[/bold] wrote: [quote][p][bold]basingstoke26[/bold] wrote: our wonderful council obviosly had money to spend one year, when they filled in all the bus stops and narrowed 3 appraoches to roundabouts to 2 and 2 to 1, Like the redevolpment of the old town centre, rather than spend the cash on making it better, we went for a second class town centre, the roundabout rejig smacks of money saving while not actually doing much, the exit from the M3 should go straight through the roundabout non stop, and the A30 junction should go over the top, that way we don't have any congestion, All they have done is park the cars in the middle of the roundabout while they wait for the lights, come on council, grow some and make it work efficently..[/p][/quote]Maybe a double grade separation might have worked! The A30 runs non-stop across the bottom, the middle level has the interchange, and the M3/A339 runs over the top. People balk at the expense and also try and use the excuse "but it is only at peak times!" But if peak times are now at full capacity, that still causes delays and if more houses are being built, businesses are being put off investment in Basingstoke. I know any road system will always have finite capacity, but we shouldn't be scared of investment or of the car. Moving cars pollute a **** sight less than stationary ones![/p][/quote]You are really saying that a three-layer junction is the answer? Most motorway junctions are not three layer. In fact the only three layer junctions I can think of are where two motorways intersect. Apart from the height that would be required the embankments and cuttings needed on the approach would use up a lot of land. Probably more than what is available. As for the cost - prohibitive by anyone's standards. One thing that has always struck me as strange about that motorway junction is the fact that there is only one approach road. So even traffic going south towards Alton have to go north and on to the ring road adding to the Basingstoke traffic. Why not connect that junction to the A339 south? JJ38JJ
  • Score: 2

3:13pm Mon 16 Jun 14

CrossofLorraine says...

Major building/development south of the M3, not going to happen far too many vested interests preventing B'stoke expanding south. Trouble is the A30 traffic is mostly local and being used to the join M3, so the access roads either side of the 'straight over' A30 would be clogged trying to get off for the M3. In addition where would the traffic from Old Basing on the A30 go straight over to; Town/Reading or West/Alton? Either one is the wrong direction for the other. Does half a mile of flyover with dual carriage way taking thru traffic over the roundabout north cost prohibitive, I am so the drivers stuck there twice a day every day wouldn't think so...
Major building/development south of the M3, not going to happen far too many vested interests preventing B'stoke expanding south. Trouble is the A30 traffic is mostly local and being used to the join M3, so the access roads either side of the 'straight over' A30 would be clogged trying to get off for the M3. In addition where would the traffic from Old Basing on the A30 go straight over to; Town/Reading or West/Alton? Either one is the wrong direction for the other. Does half a mile of flyover with dual carriage way taking thru traffic over the roundabout north cost prohibitive, I am so the drivers stuck there twice a day every day wouldn't think so... CrossofLorraine
  • Score: 0

8:31am Tue 17 Jun 14

jonone says...

CrossofLorraine wrote:
Major building/development south of the M3, not going to happen far too many vested interests preventing B'stoke expanding south. Trouble is the A30 traffic is mostly local and being used to the join M3, so the access roads either side of the 'straight over' A30 would be clogged trying to get off for the M3. In addition where would the traffic from Old Basing on the A30 go straight over to; Town/Reading or West/Alton? Either one is the wrong direction for the other. Does half a mile of flyover with dual carriage way taking thru traffic over the roundabout north cost prohibitive, I am so the drivers stuck there twice a day every day wouldn't think so...
It was just a thought and suggestion - more than what some are making.
[quote][p][bold]CrossofLorraine[/bold] wrote: Major building/development south of the M3, not going to happen far too many vested interests preventing B'stoke expanding south. Trouble is the A30 traffic is mostly local and being used to the join M3, so the access roads either side of the 'straight over' A30 would be clogged trying to get off for the M3. In addition where would the traffic from Old Basing on the A30 go straight over to; Town/Reading or West/Alton? Either one is the wrong direction for the other. Does half a mile of flyover with dual carriage way taking thru traffic over the roundabout north cost prohibitive, I am so the drivers stuck there twice a day every day wouldn't think so...[/p][/quote]It was just a thought and suggestion - more than what some are making. jonone
  • Score: 0

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