M4 westbound between J20 and J21 | Westbound | Road Works

Location : The M4 westbound between junctions J20 and J21 .
Lane Closures : Lane two will be closed.
Reason : Roadworks are planned.
Status : Pending.
Schedule : From 20:00 on 9 December 2025 to 06:00 on 10 December 2025.
Lanes Closed : There will be one of two lanes closed.