There will be significant delays in several areas of Wales
A Traffic Wales camera shows M4 junction 32 Coryton (westbound)
Resurfacing works will cause disruption on the M4 this week. Those worst affected will be in the Cardiff and Pyle areas while disruption will also be felt by lorry drivers travelling in the Chepstow area who use the Severn Bridge.
Aside from the motorway there are other long-term road closures, contraflow systems, and roadworks in place that you should be aware of before setting off on your journey. This includes potential delays in Carmarthen, Conwy and Denbighshire.
We’ve put together an at-a-glance guide to all the road closures and disruption you should be aware of for the coming week.
The following road closures will be in place on the M4
Resurfacing work is taking place on M4 westbound from junction 30 Cardiff Gate to junction 32 Coryton. From 8pm until 6am, the road is closed with diversions in place. The works began on Tuesday, June 24 and will continue until Tuesday, July 22.
Resurfacing work will begin on Wednesday, July 23 at M4 eastbound junction 32 Coryton to junction 30 Cardiff Gate. The road will be closed and diversions will be in place from 8pm until 6am. The works will continue until Thursday, August 21.
Elsewhere between junctions 37 and 38 near Pyle major roadworks are to be carried out to ensure the safety and long-term resilience of the motorway.
The works will take place for six months and began on Monday, June 9. The work involves refurbishment to five bridges on this stretch of the M4.
Other key disruption
There will be narrow lanes due to roadworks on M4 in both directions from junction 38 A48 (Margam) to junction 37 A4229 (Pyle / Porthcawl) until July 25.
There is a 7.5 tonne weight restriction for heavy goods vehicles in place on the M48 Severn Bridge until further notice.
Resurfacing work will take place on the A40 Carmarthen bypass in both directions until July 25 from 8pm until 6am. The road will be closed with diversions in place. The works have been taking place since June 19.
Maintenance work will take place on the A55 westbound Conwy Tunnel. A contraflow system will be in place. The works will take place from July 21 until July 24 from 7pm until 7am.
Road closures elsewhere
In Powys the B4393 is closed in both directions until April 3 next year due to long-term roadworks between Ffridd Wydd-afon (Alltforgan) and Llanwddyn (Llanwddyn).
In Denbighshire the B5429 is closed in both directions until October 23 due to roadworks from Ffynnon Y Chwarel (Bodfari) to Heol-Y-Brenin (Tremeirchion).
In Johnstown Old St Clears Road westbound is closed due to roadworks from Job’s Well Road to Millbank Road until March 4 next year.
The A534 Holt Road eastbound in Wrexham is closed due to roadworks from Rydal Court to B5100 Dean Road until May 6, 2026.
Elsewhere in Wrexham Park Road is closed due to roadworks from A5 to The Newbridge Arms until July 24.
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