Police closed all but one lane on the A1M at Peterborough this afternoon, Monday November 6.
There were long delays between Norman Cross and Peterborough on the southbound carriageway with queues back past the Fletton Parkway junction.
Police said the crash involves a lorry and a car and took place at 1.30pm and caused long delays.
Lanes one and two, of three, were shut and there was a large oil spill. Recovery required absorbents and road sweepers to clear the carriageway.
The road was cleared at around 4pm but long residual dealys remain.