The A359 is closed in both directions at Sparkford in Somerset.
There is very slow traffic due to a serious accident - four vehicles involved between the A303 (Sparkford Roundabout) and the A371.
Police estimate the road will be closed for a significant amount of time whilst they deal with the vehicles involved in the collision.
Diversion - eastbound traffic to head towards Wincanton along the A303 and then head towards Castle Cary on the A371. Westbound traffic to follow vice versa.