The following traffic incidents and congestion for Williamstown have been reported by Highways England, Traffic Scotland, Traffic Wales or Transport for London (TfL) in the last two hours:
SOUTHBOUNDDescription: A470Now clearSouthboundNantgarw to Coryton, Start time: 12/06/2025 9:10 , Expected end time: 12/06/2025 9:15, Severity: Moderate, Source: Welsh Government, Last updated: 12/06/2025 9:10
Nearest town: 8.79 miles from Williamstown.
CLEARED @ 10:31 EASTBOUNDDescription: M4Now clearEastboundJ33 (Cardiff) Capel Llanilltern, Start time: 12/06/2025 9:10 , Expected end time: 12/06/2025 9:15, Severity: Moderate, Source: Welsh Government, Last updated: 12/06/2025 9:10
Nearest town: 8.71 miles from Williamstown.
CLEARED @ 10:31 NORTHBOUNDDescription: A4232Now clearNorthboundSt Fagans to M4 J33 Capel Llanilltern, Start time: 12/06/2025 9:10 , Expected end time: 12/06/2025 9:15, Severity: Moderate, Source: Welsh Government, Last updated: 12/06/2025 9:10
Nearest town: 9.7 miles from Williamstown.
CLEARED @ 10:31 ST FAGANS TO M4 J33 CAPEL LLANILLTERNDescription: A4232NorthboundSt Fagans to M4 J33 Capel LlanillternCongestion
Delay: s possible :, Start time: 12/06/2025 7:42 , Expected end time: 12/06/2025 10:42, Severity: Moderate, Source: Welsh Government, Last updated: 12/06/2025 7:42
Nearest town: 9.7 miles from Williamstown.
CLEARED @ 07:55 J33 CAPEL LLANILLTERNDescription: M4EastboundJ33 (Cardiff) Capel LlanillternCongestionoffslip
Delay: s possible :, Start time: 12/06/2025 7:39 , Expected end time: 12/06/2025 9:39, Severity: Moderate, Source: Welsh Government, Last updated: 12/06/2025 7:39
Nearest town: 8.71 miles from Williamstown.
CLEARED @ 07:43 NANTGARW TO CORYTONDescription: A470SouthboundNantgarw to CorytonCongestion
Delay: s possible :, Start time: 12/06/2025 6:47 , Expected end time: 12/06/2025 9:47, Severity: Moderate, Source: Welsh Government, Last updated: 12/06/2025 6:47
Nearest town: 8.79 miles from Williamstown.
CLEARED @ 06:55 TAFF'S WELLDescription: A470NorthboundTaffs WellCarriageway maintenanceRoad closedDiversions in place12/06/25-14/06/25 2000-0600 :, Start time: 12/06/2025 20:00 , End Date: 14/06/2025 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 07/06/2025 7:19
Nearest town: 9.08 miles from Williamstown.
CLEARED @ 07:55 J30 CARDIFF GATE TO J49 PONT ABRAHAMDescription: M4Both directionsJ30 (Cardiff) Cardiff Gate to J49 Pont AbrahamPoor driving conditionsSpeed restrictions, Start time: 12/06/2025 10:29 , Expected end time: 12/06/2025 16:29, Severity: Slight, Source: Welsh Government, Last updated: 12/06/2025 10:29
Nearest town: 11.94 miles from Williamstown.
CLEARED @ 10:31