M4 Junction 33 East Overbridge Expansion Joint Replacement

10/11/2025 - 22/11/2025 (20:00 - 06:00)

Full closure of East Overbridge of the A4232 roundabout at J33 of the M4 (13 nights).

Full closure of A4232 northbound from Culverhouse Cross roundabout northbound on slip to the M4 J33 roundabout (13 nights).

No night time closure on following dates due to events in Cardiff City Centre:

-11/11/25
-12/11/25 
-18/11/25

Full closure of East Overbridge of the A4232 roundabout at J33 of the M4

Diversion:

From M4 J33 follow the M4 eastbound to J32 then follow the M4 westbound back to J33.

Full closure of A4232 northbound from Culverhouse Cross roundabout northbound onslip to the M4 J33 roundabout

Diversion: 

From Culverhouse Cross roundabout follow A48 eastbound to Gabalfa roundabout. Follow the A470 northbound to M4 J32 then follow the M4 westbound to M4 J33. 

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