M4 : Westbound : J39 Groes

M4 : Westbound : J39 Groes : 15/09/26-19/09/26 2000-0600 : Entry slip road closed : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 15/09/2026

End Date: 19/09/2026

First Published

12/09/2026 09:41

Reference Number

RNMDA_2026131781

Last Updated

12/09/2026 09:41

Source Agency

Welsh Government

Connect with Traffic Wales