A major road in south Wales is closed in both directions following a crash. The A449 from Coldra to Usk is shut, with police and the fire service in attendance. Traffic Wales confirmed at 2.07pm: "Collision: A449 Between Coldra and Usk," with Gwent Police adding: "Emergency services are dealing with a road traffic collision and there is a full road closure North and South bound from Coldra to Usk. "Diversions are in place which may cause congestion. Please avoid the area and find alternative routes for your journey." The closure appears to cover an approximately eight-mile stretch of the road. A spokesperson for South Wales Fire and Rescue Service also confirmed the service was at the scene. Follow live updates here: 15:25 Ben Summer Traffic at standstill along A449 Cars are at a standstill along huge stretches of the road, with traffic cameras (updated every five minutes) showing cars stopped, some having apparently pulled over to one side to let emergency services through, with many drivers getting out. Share 15:12 Ben Summer Road remains closed as Traffic Wales delivers update As of 15.05 the road remains closed, Traffic Wales South says. In an update on Twitter, the service posted the following: Share 15:02 Ben Summer What we know so far Police and Traffic Wales have both given statements on the road closure. South Wales Fire and Rescue service also confirmed its attendance. Gwent Police said at 1.58pm: "Emergency services are dealing with a road traffic collision and there is a full road closure North and South bound from Coldra to Usk. Diversions are in place which may cause congestion. Please avoid the area and find alternative routes for your journey." Traffic Wales said at 2.07pm: "Road closed northbound at this time. Please find an alternate route. Southbound remains open but is heavily congested. Updates to follow." Then added at 2.35pm: "Southbound traffic has now been held temporarily so that police can deal with the on going incident." Share 14:48 Ben Summer Southbound traffic being held "temporarily" Initially, both Traffic Wales and Gwent Police said the road was only closed northbound - then police added: "The south bound carriageway is now also closed." Traffic Wales has given a further update, saying this is a temporary closure: "Update 14:35 Southbound traffic has now been held temporarily so that police can deal with the on going incident. Updates to follow." Share 14:46 Ben Summer Image shows stopped cars Pictures from Traffic Wales' road cameras show stopped cars on the closed A449. The images, from the Abernant Junction North camera, show cars at a standstill with some drivers opening the doors and getting out. It is unclear whether this is the exact location of the crash. Share