M4 : Eastbound : J36 Sarn :

M4 : Eastbound : J36 Sarn : Cyclic maintenance : Onslip closed : Diversions in place : 02/03/26-21/03/26 2000-0600 :

Type of event: Roadworks

Severity of disruption: Road closure

Start Date: 02/03/2026

End Date: 21/03/2026

First Published

27/02/2026 16:47

Reference Number

RNMDA_2026127670

Last Updated

27/02/2026 16:47

Source Agency

Welsh Government

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