M4 : Westbound : J41 Pentyla/Baglan to J43 Llandarcy :

M4 : Westbound : J41 Pentyla/Baglan to J43 Llandarcy : Congestion : Delays possible :

Type of event: Incidents

Severity of disruption: Moderate

Start Date: 20/03/2026

End Date: 20/03/2026

First Published

20/03/2026 15:53

Reference Number

RNMDA_2026128160

Last Updated

20/03/2026 15:53

Source Agency

Welsh Government

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