A person was injured in a two-vehicle crash on the A1M between Peterborough and Norman Cross.
The collision was reported at around 3.45pm yesterday (July 10) on the south carriageway at between junction 16 and junction 17.
A spokesperson for Cambridgeshire Constabulary said: "It caused disruption because the road was partly blocked and then had to be closed for recovery.
"The road fully reopened at 5.45pm."
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