Emergency services were called to the eastbound carriageway a quarter of a mile from Fenstanton after the incident at 3.15pm. A police spokesman said the central reservation had been damaged in the crash. A woman, in her 60s, was extricated from the car but refused treatment from paramedics. He added: The outside lane has been closed. Queues were building as far back as Godmanchester and are expected to get worse during rush hour.