A man has been taken to hospital after a crash on the A467 between Abertillery and Aberbeeg.
Officers from Gwent Police have closed the A467 in both directions after the incident, which happened just after 5.30pm on Wednesday.
The Wales Ambulance Service said a crew attended the scene at 5.44pm and took a man to the Royal Gwent Hospital in Newport for treatment. The extent of his injuries are not yet known.
Police have closed the stretch of the A467 between the A4046 at Aberbeeg and Castle Street at Abertillery to carry out investigation work.
Traffic travelling between Crumlin and Brynmawr is also affected and the police have advised drivers to find alternative routes.
