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

M4 : Westbound : J38 Margam to J41 Pentyla/Baglan : 13/04/26-15/04/26 2000-0600 : Improvement work : Closed : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 13/04/2026

End Date: 15/04/2026

First Published

11/04/2026 08:57

Reference Number

RNMDA_2026128631

Last Updated

11/04/2026 08:57

Source Agency

Welsh Government

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