Police are investigating a single-vehicle collision on Sunday (18th July) in Cromwell Road, Eynesbury.
The crash involved a black Range Rover Sport and happened at just before noon.
The vehicle had just turned right into Cromwell Road, from Potton Road, before crashing into metal railings.
The driver, a 33-year-old woman, was not seriously injured but her condition deteriorated and she was taken to Addenbrooke’s Hospital. A child passenger was unhurt.
Officers would like to thank a local resident who provided refreshments at the scene.
Anyone who saw the collision, or vehicle in the lead up to it, is asked to call 101 quoting incident 209 of 18 July.