M4 : Westbound : J27 High Cross WB Onslip to J29 Castleton

M4 : Westbound : J27 High Cross WB Onslip to J29 Castleton : Congestion : Delays possible :

Type of event: Incidents

Severity of disruption: Moderate

Start Date: 13/11/2026

End Date: 13/11/2026

First Published

13/11/2026 16:41

Reference Number

RNMDA_2026133422

Last Updated

13/11/2026 16:41

Source Agency

Welsh Government

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