Thames Valley Police is appealing for witnesses following a road traffic collision on the A422 near Little Crawley, north of Milton Keynes.
The collision occurred at around 5.30pm on Saturday 29th June when a blue Toyota Yaris that was travelling on the A422 from Bedford towards Newport Pagnell, left the road and collided with a bridge.
The driver of the vehicle, a 68-year-old woman, sustained serious injuries was taken to the John Radcliffe Hospital in Oxford, where she remains in a serious, but stable condition.
Investigating officer PC Daniel Smith of the Joint Operations Unit for Roads Policing based at Milton Keynes, said: “I am appealing to anybody that witnessed this collision, or may have dash-cam footage of the incident, to contact the 24-hour non-emergency number 101, quoting reference number 43190197189.
“Alternatively, you can make a report online.”