M4 : Westbound : J46 Llangyfelach to J47 Penllergaer :

M4 : Westbound : J46 Llangyfelach to J47 Penllergaer : Road closed : Maintenance work : 18/03/26-19/03/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 18/03/2026

End Date: 19/03/2026

First Published

14/03/2026 08:45

Reference Number

RNMDA_2026128032

Last Updated

14/03/2026 08:45

Source Agency

Welsh Government

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