M4 : Westbound : J38 Margam to J41 Pentyla/Baglan

M4 : Westbound : J38 Margam to J41 Pentyla/Baglan : 16/11/26-17/11/26 2000-0600 : Surveys : Closed : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 16/11/2026

End Date: 17/11/2026

First Published

13/11/2026 17:30

Reference Number

RNMDA_2026133430

Last Updated

13/11/2026 17:30

Source Agency

Welsh Government

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