M4 : Both directions : J38 Margam to J42 Earlswood

M4 : Both directions : J38 Margam to J42 Earlswood : Resurfacing work : Road closed : Diversions in place : 20/09/26-25/09/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 20/09/2026

End Date: 25/09/2026

First Published

15/09/2026 18:14

Reference Number

RNMDA_2026131860

Last Updated

15/09/2026 18:14

Source Agency

Welsh Government

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