Road traffic alerts | Traffic Wales

19 results

This list shows the highest priority alerts for the motorway and trunk road network in Wales. To view local authority information, please go to our Road Traffic Map or to view information for England visit Traffic England.

M48 : Both directions : Severn Bridge : 7.5t weight restriction for heavy goods vehicles from 27/05/25-until further notice

Start: 27/05/2025

End: 23/05/2026

M4 : Westbound : J23A Magor to J26 Malpas : Congestion : Delays possible :

Start: 12/07/2025

End: 12/07/2025

A40 : Both directions : Carmarthen Bypass : Resurfacing work : Closed : Diversions in place : 19/06/25-25/07/25 2000-0600 :

Start: 19/06/2025

End: 25/07/2025

M4 : Westbound : J30 Cardiff Gate to J32 Coryton : Resurfacing work : Road closed : Diversions in place : 24/06/25-15/07/25 2000-0600 :

Start: 24/06/2025

End: 15/07/2025

M4 : Eastbound : J30 Cardiff Gate to J32 Coryton : Resurfacing work : Road closed : Diversions in place : 15/07/25-12/08/25 2000-0600 :

Start: 15/07/2025

End: 12/08/2025

A40 : Both directions : Pensarn Roundabout to Abergwili Roundabout : Resurfacing work : Road closed : Diversions in place : 16/06/25-19/07/25 2000-0600 :

Start: 16/06/2025

End: 19/07/2025

A55 : Eastbound : J2 Ty Mawr to J3 Pen Caledog (Valley) : Resurfacing work : Road closed : Diversions in place : 30/06/25-19/07/25 1800-0600 :

Start: 30/06/2025

End: 19/07/2025

A483 : Both directions : Llandovery to Cynghordy : Roadworks : Closed : Diversions in place : 12/07/25 & 13/07/25 0800-1700 :

Start: 12/07/2025

End: 13/07/2025

A470 : Both directions : Commins Coch to Talerddig : Resurfacing work : Closed : Diversions in place : 15/07/25-19/07/25 1900-0700 :

Start: 15/07/2025

End: 19/07/2025

A470 : Northbound : Coryton to Taff's Well : Roadworks : Closed : Diversions in place : 13/07/25-14/07/25 2100-0600 :

Start: 13/07/2025

End: 14/07/2025