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M4 : Westbound : J25A Grove Park to J28 Tredegar Park

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M4 : Westbound : J25A Grove Park to J28 Tredegar Park : 17/06/26-19/06/26 2000-0600 : Maintenance work : Entry slip road closed : Closed : Diversions in place :
Type of event: Roadworks
Severity of disruption: Road closure
Start Date: 17/06/2026
End Date: 19/06/2026

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First Published
15/06/2026 08:46
Reference Number
RNMDA_2026130038
Last Updated
15/06/2026 08:46
Source Agency
Welsh Government
Connect with Traffic Wales