M4 : Westbound : J43 Llandarcy :

M4 : Westbound : J43 Llandarcy : 22/04/26-23/04/26 1930-0100 : Closed : Diversions in place : offslip : onslip :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 22/04/2026

End Date: 23/04/2026

First Published

19/04/2026 15:17

Reference Number

RNMDA_2026128829

Last Updated

19/04/2026 15:17

Source Agency

Welsh Government

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