Start Date : 24/06/25 | End Date: 29/08/25
Work to carry out essential carriageway resurfacing to the M4 carriageway between J30 Cardiff Gate – J32 Coryton Interchange will commence on 24/06/2025 for up to 35 nights.
The work will be carried out over 35 nights 20:00 – 06:00, Monday - Friday under full carriageway closures between J30 and J32.
The work in the westbound carriageway will start on 24/06/2025 and finish by 23/07/2025.
The work in the eastbound carriageway will start on 25/07/2025 and finish by 21/08/2025. No simultaneous closures of both carriageways are planned.
The M4 will remain open until 22:00 on the following dates:
Wednesday 30 July 2025
Thursday 31 July 2025
The works are being carried out overnight in June and July 2025 when traffic flows are historically lower to minimise disruption.