M4 : Westbound : J38 Margam to J41 Pentyla/Baglan

M4 : Westbound : J38 Margam to J41 Pentyla/Baglan : Congestion : Delays possible :

Type of event: Incidents

Severity of disruption: Moderate

Start Date: 18/09/2026

End Date: 18/09/2026

First Published

18/09/2026 15:45

Reference Number

RNMDA_2026131912

Last Updated

18/09/2026 15:45

Source Agency

Welsh Government

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