M4 : Westbound : J37 Pyle to J38 Margam :

M4 : Westbound : J37 Pyle to J38 Margam : Resurfacing work : Road closed : Diversions in place : 08/03/26-14/03/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 08/03/2026

End Date: 14/03/2026

First Published

06/03/2026 12:12

Reference Number

RNMDA_2026127672

Last Updated

08/03/2026 20:00

Source Agency

Welsh Government

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