M4 : Westbound : J38 Margam to J40 Taibach :

M4 : Westbound : J38 Margam to J40 Taibach : Carriageway maintenance : Road closed : Diversions in place : 15/01/26-16/01/26 1900-0100 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 15/01/2026

End Date: 16/01/2026

First Published

09/01/2026 16:05

Reference Number

RNMDA_2026126470

Last Updated

09/01/2026 16:05

Source Agency

Welsh Government

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