M4 westbound between J3 and J4 | Westbound | Congestion

Location : The M4 westbound between junctions J3 and J4 .
Reason : Congestion.
Status : Currently Active.
Return To Normal : Normal traffic conditions are expected between 13:15 and 13:30 on 5 March 2026.
Delay : There are currently delays of 10 minutes against expected traffic.