M4 : Westbound : J38 Margam

M4 : Westbound : J38 Margam : Roadworks : Exit slip road closed : Diversions in place : 12/10/26-17/10/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 12/10/2026

End Date: 17/10/2026

First Published

09/10/2026 13:10

Reference Number

RNMDA_2026132481

Last Updated

09/10/2026 13:10

Source Agency

Welsh Government

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