M4 : Westbound : J46 Llangyfelach :

M4 : Westbound : J46 Llangyfelach : Carriageway maintenance : Road closed : Diversions in place : 20/05/26-21/05/26 1930-0100 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 20/05/2026

End Date: 21/05/2026

First Published

16/05/2026 08:28

Reference Number

RNMDA_2026129441

Last Updated

16/05/2026 08:28

Source Agency

Welsh Government

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