A 32-year-old woman has been taken to hospital after a serious accident on the road between the Pwllypant and St Cenydd roundabouts, which has caused road closures and traffic jams in and around Caerphilly.
The A468 road between the two roundabouts was closed for several hours but is now reopened.
Diversions are in place and emergency services are at the scene.
The road had been partially-opened briefly to release some congestion, but it was then closed to allow recovery and clean up.
There was significant traffic congestion throughout Caerphilly town for most of the day, while bus services were also affected.
Emergency Services are dealing with a Road Traffic Collision on the A468, Caerphilly. The road is closed between Corbett’s & St Cenydd’s roundabouts & diversions are in place which may cause congestion. Please avoid the area if possible & find alternative routes for your journey pic.twitter.com/hlPARulH2J
— Gwent Police (@gwentpolice) December 7, 2018
Gwent Police said: “At approximately 10.50am on Friday, December 7, we received a report of an accident involving a silver Citroen C3, a grey Toyota Avensis and a lorry on the A468.
“A woman has been taken to University Hospital of Wales with potentially life changing injuries.”