M4 westbound within J20 | Westbound | Road Works

Location : The M4 westbound at junction J20 .
Lane Closures : Lane one will be closed.
Reason : Roadworks are planned.
Status : Pending.
Schedule : Expect disruption everyday between 21:00 and 06:00 from 3 June 2026 to 6 June 2026.
Lanes Closed : There will be one of two lanes closed.