Live road closures & traffic incidents
Stuck in traffic? Check whether the road you are on is closed right now. Live accident and emergency closures from National Highways and Traffic Wales are listed first, followed by roadworks in force and closures starting in the next 48 hours.
Live incidents
0
Accidents and emergency closures right now
Active roadworks
76
Works and lane closures currently in force
Starting soon
215
Closures planned in the next 48 hours
Cleared today
371
Closures resolved in the past 24 hours
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7 live and upcoming closures
Filters applied: Region: cardiff
Roadworks in force now
M4 : Eastbound : J33 Capel Llanilltern : Onslip closed : 03/09/26-06/09/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Eastbound : J33 Capel Llanilltern : Onslip closed : 03/09/26-06/09/26 2000-0600 : Diversions in place :, Start time: 03/09/2026 20:00 , End Date: 06/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 28/08/2026 17:25
M4 : Westbound : J32 Coryton : Onslip closed : Offslip closed : 01/09/26-03/09/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Westbound : J32 Coryton : Onslip closed : Offslip closed : 01/09/26-03/09/26 2000-0600 : Diversions in place :, Start time: 01/09/2026 20:00 , End Date: 03/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 01/09/2026 20:00
M4 : Eastbound : J32 Coryton : Offslip closed : Onslip closed : 03/09/26-06/09/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Eastbound : J32 Coryton : Offslip closed : Onslip closed : 03/09/26-06/09/26 2000-0600 : Diversions in place :, Start time: 03/09/2026 20:00 , End Date: 06/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 28/08/2026 17:23
M4 : Westbound : J30 Cardiff Gate : Onslip closed : 01/09/26-03/09/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Westbound : J30 Cardiff Gate : Onslip closed : 01/09/26-03/09/26 2000-0600 : Diversions in place :, Start time: 01/09/2026 20:00 , End Date: 03/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 01/09/2026 20:00
A470 : Northbound : Taff's Well : 17/08/26-07/09/26 2000-0600 : Improvement work : Entry slip road closed : Diversions in place :
Active Roadworks Traffic WalesDescription: A470 : Northbound : Taff's Well : 17/08/26-07/09/26 2000-0600 : Improvement work : Entry slip road closed : Diversions in place :, Start time: 17/08/2026 20:00 , End Date: 07/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 17/08/2026 20:00
A470 : Northbound : Taff's Well : Carriageway maintenance : Exit slip road closed : Diversions in place : 17/08/26-07/09/26 2000-0600 :
Active Roadworks Traffic WalesDescription: A470 : Northbound : Taff's Well : Carriageway maintenance : Exit slip road closed : Diversions in place : 17/08/26-07/09/26 2000-0600 :, Start time: 17/08/2026 20:00 , End Date: 07/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 17/08/2026 20:00
A470 : Both directions : Taff's Well : Carriageway maintenance : Entry slip road closed : Diversions in place : 17/08/26-07/09/26 2000-0600 :
Active Roadworks Traffic WalesDescription: A470 : Both directions : Taff's Well : Carriageway maintenance : Entry slip road closed : Diversions in place : 17/08/26-07/09/26 2000-0600 :, Start time: 17/08/2026 20:00 , End Date: 07/09/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 17/08/2026 20:00
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