M4 : Eastbound : J46 Llangyfelach :

M4 : Eastbound : J46 Llangyfelach : Carriageway maintenance : Road closed : Diversions in place : 21/05/26-22/05/26 1930-0100 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 21/05/2026

End Date: 22/05/2026

First Published

16/05/2026 08:28

Reference Number

RNMDA_2026129442

Last Updated

16/05/2026 08:28

Source Agency

Welsh Government

Connect with Traffic Wales