There are long queues on the A1 at Wittering following a collision.
The northbound carriageway of the road is completely blocked by the debris from the incident.
A spokesperson for Cambridgeshire police said; “We were called at 11am with reports of a collision on the A1 northbound at Wittering involving five vehicles."
It is not thought anyone suffered serious injuries in the incident.
Drivers are advised to avoid the area if possible while emergency services work at the scene.