Start date : 29/09/25 | End date : 19/01/26
Essential carriageway surfacing repairs and structural maintenance work.
The scope of works includes :
- Replacement of the bridge deck waterproofing.
- Resurfacing of the bridge deck.
- Replacement of the existing expansion joints.
- Replacement of the Densotape to the parapets.
- Replacement of the sealant to the edge beams at the joint locations.
- Cleaning of all structural elements.
- Concrete testing.
To facilitate these activities there will be :
- Closure on M4 J32 WB On-Slip ‘night time only’.
- Various Lane Closures on Coryton Gyratory ‘Night Time Only’.
- Footway Closure 24 Hours
Coryton Northwest & Southwest Footbridges
30/09/2025 (20:00) - 17/12/2025 (08:00) (Full Closure 24 hours)
Coryton North Footbridge – Lane closure A470
Lane 1 closure on A470 Southbound between Coryton roundabout (CF14 7EW) and Taffs well Interchange.
Various Lane Closures on Coryton Gyratory Night Time Only.
13/10/2025 (20:00) - 20/12/2025 (06:00)
05/01/2026 (20:00) - 16/01/2026 (06:00)
The M4 J32 Westbound On-Slip night-time closures
15/10/2025 (20:00) - 18/10/2025 (06:00)
31/10/2025 (20:00) - 01/11/2025 (06:00)
03/11/2025 (20:00) - 05/11/2025 (06:00)
26/11/2025 (20:00) - 27/11/2025 (06:00)
05/12/2025 (20:00) - 06/12/2025 (06:00)
08/12/2025 (20:00) - 12/12/2025 (06:00)
Coryton Northwest & Southwest Footbridges
Please follow the diversion route from Longwood Dr, Cardiff CF14 7HY to A4054, Cardiff CF15 and vice versa.
The M4 J32 Westbound On-Slip night-time closures
Footpath diversion route: