A48M : Westbound : M4 J29 Castleton to M4 J29A St Mellons

A48M : Westbound : M4 J29 Castleton to M4 J29A St Mellons : Congestion : Delays possible :

Type of event: Incidents

Severity of disruption: Moderate

Start Date: 19/10/2026

End Date: 19/10/2026

First Published

19/10/2026 07:12

Reference Number

RNMDA_2026132704

Last Updated

19/10/2026 07:12

Source Agency

Welsh Government

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