M4 : Westbound : J39 Groes to J41 Pentyla/Baglan

M4 : Westbound : J39 Groes to J41 Pentyla/Baglan : Congestion : Delays possible :

Type of event: Incidents

Severity of disruption: Moderate

Start Date: 28/10/2026

End Date: 28/10/2026

First Published

28/10/2026 16:42

Reference Number

RNMDA_2026132999

Last Updated

28/10/2026 16:42

Source Agency

Welsh Government

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