M4 : Westbound : J38 Margam to J41 Pentyla/Baglan :

M4 : Westbound : J38 Margam to J41 Pentyla/Baglan : Roadworks : Road closed : Diversions in place : 27/04/26-29/04/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 27/04/2026

End Date: 29/04/2026

First Published

24/04/2026 11:40

Reference Number

RNMDA_2026128985

Last Updated

24/04/2026 11:40

Source Agency

Welsh Government

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