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Essential work on A465 for five weeks

27 Jun 2024 2 minute read
Pant Ind Est Roundabout looking towards Dowlais. Image: Welsh Government

A section of the A465 will be fully closed for five weeks this summer to allow for important work to be completed sooner and to minimise uncertainty for motorists.

The closure between the A470 (Cefn Coed) junction and the temporary roundabout at Pant Industrial Estate will start at 06:00 on Monday 29 July and will end at 06:00 on Monday 2 September 2024, and is taking place during the school summer holidays when there is less traffic on this section.

The closure will allow several important elements of the A465 work to progress, helping save time on the construction programme and removing the uncertainty to journey times which overnight and weekend closures can cause.


Feedback from the public indicates constant change, such as overnight and weekend closures, are more disruptive than a fixed closure with a clear diversion.

The diversion in this case will be around four miles longer, but the journey time should be under five minutes longer only.

The A465 between the Dowlais Top junction and the Pant Industrial Estate temporary roundabout will still be open, but only for local traffic.

Discussions have taken place with partners including the local authority, Prince Charles Hospital and the emergency services before the decision was taken.

The closure and the work is being managed by Future Valleys Construction.

The work being carried out during the closure is as follows:

  • Removing the old bridge at Bryniau
  • Construction of a new bridge at Bryniau
  • Constructing a new highway embankment for the eastbound carriageway at Gurnos
  • Progressing work to construct the new of Prince Charles Hospital Junction
  • Integrating all sections of road and the footway over Taf Fechan viaduct
  • Completing the carriageway through Cefn Coed and over Taf Fawr viaduct.

FAQs are available here:

 Diversion maps can be viewed at:

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John. 6
John. 6
16 days ago

This is going to cost over £1.5 Billion (was £1.2 Billion originally) of that nearly £1 Billion will be interest payments, and there is zero chance it will be finished by the published date. We apparently don’t have any money for the essentials of health, education and policing but borrowing vast amounts of money to widen 11 miles of road that will never ever come anywhere close to repaying this by economic growth was nothing short of criminal negligence by the WG. I urge you to search online for the policy document drawn up to justify this massive borrowing and… Read more »

Wyn Morgan
Wyn Morgan
13 days ago
Reply to  John. 6

You might want to check who’s paying for it.

Last edited 13 days ago by Wyn Morgan
John. 6
John. 6
7 days ago
Reply to  Wyn Morgan

We are, Taxpayers will pay about £1.4bn over 30 years to the private contractor dualling the 11-mile road but the scheme’s appraisal was based on estimated construction cost, not the cost to taxpayers.

The government awarded the contract in November 2020 on the basis that forecast traffic growth would deliver economic benefits of £317m over 60 years.

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