Start: Autumn 2026 | End: Spring 2027
Essential works to address hazardous trees at various locations along the M4 between J23 Rogiet and J48 Pont Abraham.
The work will be undertaken during the night between 20:00 and 06:00 utilising mostly hard shoulder and lane closures; however, some total slip road closures will be required to provide the necessary safety zones in the below locations.
Junction Closures
J23a EB On-Slip (Dates TBC)
J23a EB Off-Slip (Dates TBC)
J23a WB On-Slip (Dates TBC)
J24 WB Off-Slip (Dates TBC)
J28 EB Off-Slip (Dates TBC)
J28 WB On-Slip (Dates TBC)
J32 EB On-Slip (Dates TBC)
J32 EB Off-Slip (Dates TBC)
J33 WB On-Slip (Dates TBC)
Junction closures
Phase 1 07/09/26 – 08/09/26
J42 eastbound exit slip road
J43 eastbound entry slip road
Phase 3 08/09/26 – 09/09/26
J41 westbound exit slip road
Phase 5 10/09/26 – 18/09/26
J38 eastbound entry slip road
Phase 6a 20/09/26 – 23/09/26
J38 eastbound entry slip road
Phase 6b 23/09/26 – 28/09/26
J38 westbound exit slip road
Junction Closures
Phase 1 07/09/26 – 14/09/26
J36 eastbound entry slip road
Phase 2 15/09/26 – 08/10/26
J35 eastbound exit slip road
Signed diversions will be established on all slip road closures.