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M4 J33 Capel Llanilltern - J34 Miskin Improvements

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Resurfacing works
South Wales

Start Date - 18/03/2026  End Date - 25/03/2026

Essential carriageway surfacing repairs and structural maintenance works 18/03/2026 - 25/03/2026 on the M4 J33 Capel Llanilltern - Miskin Improvements.

What's happening?

Essential carriageway surfacing repairs and structural maintenance works will be conducted overnight between (20:00) 18/03/2026 and  (06:00) 25/03/2026 

Full closure of M4 westbound carriageway between J33 Capel Llanilltern and J34 Miskin

Full closure of J33 Capel Llanilltern on slip westbound

Full closure of J34 Miskin off slip westbound. 

 

 

 

Diversions

Traffic will be diverted off the M4 carriageway via the M4 J33 onslip eastbound , A470, A473, A4119

Get in touch

For further information, please contact Traffic Wales on 0300 123 1213 or via X and Facebook.

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