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Rydym yn croesawu galwadau’n Gymraeg. We welcome calls in Welsh.
Rydym yn croesawu galwadau’n Gymraeg. We welcome calls in Welsh.

M4 Coryton North and Coryton South Footbridges - Bridge Deck Refurbishment Schemes

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:

 

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