Location : The M4 westbound between junctions J3 and J4 .
Lane Closures : Lanes 1 and 2 will be closed.
Reason : Emergency barrier repairs are planned.
Status : Pending.
Schedule : From 22:00 on 10 September 2025 to 05:30 on 11 September 2025.
Lanes Closed : There will be two of four lanes closed.
