M4 : Westbound : J28 Tredegar Park to J29 Castleton

M4 : Westbound : J28 Tredegar Park to J29 Castleton : Congestion

Type of event: Incidents

Severity of disruption: Moderate

Start Date: 16/08/2026

End Date: 16/08/2026

First Published

16/08/2026 12:17

Reference Number

RNMDA_2026131228

Last Updated

16/08/2026 12:17

Source Agency

Welsh Government

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