M4 : Westbound : J34 Miskin to J38 Margam

M4 : Westbound : J34 Miskin to J38 Margam : 14/09/26-19/09/26 2000-0600 : Surveys : Entry slip road closed : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 14/09/2026

End Date: 19/09/2026

First Published

12/09/2026 08:53

Reference Number

RNMDA_2026131772

Last Updated

12/09/2026 08:53

Source Agency

Welsh Government

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