The following traffic incidents and congestion for St Athan have been reported by Highways England, Traffic Scotland, Traffic Wales or Transport for London (TfL) in the last two hours:
ST FAGANS TO M4 J33 CAPEL LLANILLTERNDescription: A4232NorthboundSt Fagans to M4 J33 Capel LlanillternCongestion
Delay: s possible :, Start time: 25/04/2026 14:21 , Expected end time: 25/04/2026 16:21, Severity: Moderate, Source: Welsh Government, Last updated: 25/04/2026 14:21
Nearest town: 8.97 miles from St Athan.
CLEARED @ 14:30 J38 MARGAM TO J41 PENTYLA/BAGLANDescription: M4WestboundJ38 (Port Talbot) Margam to J41 (Port Talbot) Pentyla/BaglanRoadworksRoad closedDiversions in place27/04/26-29/04/26 2000-0600 :, Start time: 27/04/2026 20:00 , End Date: 29/04/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/04/2026 11:40
Nearest town: 19.71 miles from St Athan.
CLEARED @ 12:06 J39 GROESDescription: M4WestboundJ39 GroesEntry slip road closedDiversions in place27/04/26-29/04/26 2000-0600 :, Start time: 27/04/2026 20:00 , End Date: 29/04/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/04/2026 11:41
Nearest town: 18.51 miles from St Athan.
CLEARED @ 12:06 J32 CORYTONDescription: M4EastboundJ32 (Cardiff) CorytonExit slip road closedDiversions in place27/04/26-01/05/26 2000-0600 :, Start time: 27/04/2026 20:00 , End Date: 01/05/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/04/2026 11:35
Nearest town: 11.97 miles from St Athan.
CLEARED @ 11:54 J33 CAPEL LLANILLTERN TO J32 CORYTONDescription: M4EastboundJ33 (Cardiff) Capel Llanilltern to J32 (Cardiff) CorytonResurfacing workRoad closedDiversions in place27/04/26-29/04/26 2000-0600 :, Start time: 27/04/2026 20:00 , End Date: 29/04/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/04/2026 11:38
Nearest town: 10.66 miles from St Athan.
CLEARED @ 11:54 J35 PENCOEDDescription: M4WestboundJ35 (Pen-coed) PencoedExit slip road closedDiversions in place27/04/26-01/05/26 2000-0600 :, Start time: 27/04/2026 20:00 , End Date: 01/05/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 24/04/2026 11:38
Nearest town: 9.06 miles from St Athan.
CLEARED @ 11:54