A lorry has overturned and is blocking the A505 Chrishall Road at Fowlmere near Duxford.
“Due to a collision A505 the road is currently closed in both directions,” said a spokesperson for Cambridgeshire fire and rescue.
Releasing an image of the crash a few moments ago a spokesperson said: “The A505 is likely to remain closed for a few hours while the road is cleared.
“Please check your route before you travel.”