M4 : Westbound : J39 Groes

M4 : Westbound : J39 Groes : 18/06/26-19/06/26 2000-0600 : Maintenance work : Entry slip road closed : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 18/06/2026

End Date: 19/06/2026

First Published

13/06/2026 08:10

Reference Number

RNMDA_2026130013

Last Updated

13/06/2026 08:10

Source Agency

Welsh Government

Connect with Traffic Wales