A serious collision closed the A605 at Haddon today.
The single vehicle crash took place on the westbound carriageway between Elton and Haddon.
The Magpas air ambulance landed at the scene and police, fire and ambulance crews are attended.
The crash took place at around 11.10am when one car left the road and rolled over.
A male casualty was cut free from the vehicle and treated at the scene by paramedics who issued pain relief.
He was taken to Peterborough City Hospital by land ambulance with serious head and neck injuries.