M4 : Westbound : J25A Grove Park to J28 Tredegar Park :

M4 : Westbound : J25A Grove Park to J28 Tredegar Park : Closed : Diversions in place : 01/02/26-06/02/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 01/02/2026

End Date: 06/02/2026

First Published

31/01/2026 18:12

Reference Number

RNMDA_2026126997

Last Updated

01/02/2026 20:00

Source Agency

Welsh Government

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