M4 : Westbound : J37 Pyle to J39 Groes :

M4 : Westbound : J37 Pyle to J39 Groes : Road closed : 16/03/26-21/03/26 2000-0600 : Diversions in place : Maintenance work :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 16/03/2026

End Date: 21/03/2026

First Published

14/03/2026 08:31

Reference Number

RNMDA_2026128027

Last Updated

14/03/2026 08:31

Source Agency

Welsh Government

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