M4 : Westbound : J23A Magor to J24 Coldra

M4 : Westbound : J23A Magor to J24 Coldra : 14/09/26-15/09/26 2000-0600 : J24 : Exit slip road closed : Maintenance work : Diversions in place :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 14/09/2026

End Date: 15/09/2026

First Published

12/09/2026 08:43

Reference Number

RNMDA_2026131770

Last Updated

12/09/2026 08:43

Source Agency

Welsh Government

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