M4 : Westbound : J40 Taibach to J46 Llangyfelach : Congestion : Delays possible :
ActiveDescription: M4 : Westbound : J40 Taibach to J46 Llangyfelach : Congestion : Delays possible :, Start time: 16/10/2026 16:29 , Expected end time: 16/10/2026 20:29, Severity: Moderate, Source: Welsh Government, Last updated: 16/10/2026 16:29
- Start time
- To be confirmed
- Expected end
- Awaiting update
- Duration
- Live incident
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- First published
- Fri, Oct 16, 2026 4:29 PM
- Coordinates
- 51.650120, -3.850467
- Feed provider
- Traffic Wales
- Coordinate source
- Georss Point
Source: Traffic Wales data feed
Related incidents
A465 : Both directions : Glynneath : Roadworks : Entry slip road closed : and Exit slip road closed : Diversions in place : 15/10/26-22/10/26 2000-0600 :
Active Roadworks Traffic WalesDescription: A465 : Both directions : Glynneath : Roadworks : Entry slip road closed : and Exit slip road closed : Diversions in place : 15/10/26-22/10/26 2000-0600 :, Start time: 15/10/2026 20:00 , End Date: 22/10/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 15/10/2026 20:00
M4 : Westbound : J39 Groes : Onslip closed : 19/10/26-24/10/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Westbound : J39 Groes : Onslip closed : 19/10/26-24/10/26 2000-0600 : Diversions in place :, Start time: 19/10/2026 20:00 , End Date: 24/10/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 16/10/2026 10:58
M4 : Westbound : J38 Margam : Offslip closed : 19/10/26-24/10/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Westbound : J38 Margam : Offslip closed : 19/10/26-24/10/26 2000-0600 : Diversions in place :, Start time: 19/10/2026 20:00 , End Date: 24/10/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 16/10/2026 10:56
M4 : Eastbound : J41 Pentyla/Baglan : Offslip closed : 19/10/26-24/10/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Eastbound : J41 Pentyla/Baglan : Offslip closed : 19/10/26-24/10/26 2000-0600 : Diversions in place :, Start time: 19/10/2026 20:00 , End Date: 24/10/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 16/10/2026 11:04
M4 : Eastbound : J43 Llandarcy : Onslip closed : 18/10/26-20/10/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Eastbound : J43 Llandarcy : Onslip closed : 18/10/26-20/10/26 2000-0600 : Diversions in place :, Start time: 18/10/2026 20:00 , End Date: 20/10/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 16/10/2026 11:28
M4 : Eastbound : J42 Earlswood : Offslip closed : 18/10/26-20/10/26 2000-0600 : Diversions in place :
Active Roadworks Traffic WalesDescription: M4 : Eastbound : J42 Earlswood : Offslip closed : 18/10/26-20/10/26 2000-0600 : Diversions in place :, Start time: 18/10/2026 20:00 , End Date: 20/10/2026 6:00, Severity: Road closure, Source: Welsh Government, Last updated: 16/10/2026 11:27