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M4 : Westbound : J38 Margam to J39 Groes

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M4 : Westbound : J38 Margam to J39 Groes : 05/10/26-10/10/26 2000-0600 : Exit slip road closed : Entry slip road closed : Clearance work : Diversions in place :
Type of event: Roadworks
Severity of disruption: Road closure
Start Date: 05/10/2026
End Date: 10/10/2026

Go to our Contact page to contact us about this traffic alert. Please quote the reference number below.

First Published
03/10/2026 16:34
Reference Number
RNMDA_2026132292
Last Updated
03/10/2026 16:34
Source Agency
Welsh Government
Connect with Traffic Wales