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M4 westbound exit slip road closure at J41 Pentyla/Baglan, 30 Sep 2026

Cleared

This roadworks closure on the M4 has cleared. It started at 20:00 on Wed 30 Sep and cleared at 06:00 on Thu 1 Oct.

Last updated by Traffic Wales at 20:00 on Wednesday 30 September 2026.

Closure details and map

Status
Cleared
Closure type
Exit slip road closure
Category
Clearance Work
Road
M4
Direction
Westbound
Junctions
J41
Location
J41 Pentyla/Baglan
Working hours
20:00 to 06:00 overnight
Started
20:00 on Wednesday 30 September 2026
Cleared
06:00 on Thursday 1 October 2026
Details
Clearance work, exit slip road closed, diversion
Source
Traffic Wales
Last updated by the source
20:00 on Wednesday 30 September 2026

Map of the M4 westbound exit slip road closure at J41 Pentyla/Baglan

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  • Cleared

Other M4 closures and crash records

3 other closures are in force on the M4 right now, and 58 more are planned in the next 7 days.

The M4 accident statistics from 1979 to 2025 record 29,200 collisions on the road, 724 of them fatal.

All M4 closures