M4 : Eastbound : J45 Ynysforgan to J44 Lon Las :

M4 : Eastbound : J45 Ynysforgan to J44 Lon Las : Carriageway maintenance : Road closed : Diversions in place : 18/05/26-20/05/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 18/05/2026

End Date: 20/05/2026

First Published

16/05/2026 08:27

Reference Number

RNMDA_2026129440

Last Updated

16/05/2026 08:27

Source Agency

Welsh Government

Connect with Traffic Wales