M4 : Westbound : J30 Cardiff Gate

M4 : Westbound : J30 Cardiff Gate : Onslip closed : 01/09/26-03/09/26 2000-0600 : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 01/09/2026

End Date: 03/09/2026

First Published

28/08/2026 17:19

Reference Number

RNMDA_2026131481

Last Updated

28/08/2026 17:19

Source Agency

Welsh Government

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