M4 : Westbound : J28 Tredegar Park

M4 : Westbound : J28 Tredegar Park : Maintenance work : Entry slip road closed : Diversion : 06/09/26-07/09/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 06/09/2026

End Date: 07/09/2026

First Published

04/09/2026 14:38

Reference Number

RNMDA_2026131617

Last Updated

04/09/2026 14:38

Source Agency

Welsh Government

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