M4 : Westbound : J39 Groes to J40 Taibach :

M4 : Westbound : J39 Groes to J40 Taibach : 22/04/26 1900-2300 : Closed : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 22/04/2026

End Date: 22/04/2026

First Published

19/04/2026 15:13

Reference Number

RNMDA_2026128826

Last Updated

19/04/2026 15:13

Source Agency

Welsh Government

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