THIS morning at about 6.50am a blue Peugeot 207 left the A157 road at East Barkwith and collided with a tree which then fell onto the car.
The woman driver and sole occupant of the vehicle was a 45-year-old woman believed to be from the Lincoln area.
She was freed from the vehicle by the fire and rescue service and taken to Lincoln County hospital, her injuries are described as serious.
Police are trying to trace and inform her relatives.
The investigating officers would like anyone who saw the collision or who may have seen the car on the road before the collision to contact them via the collision witness hotline 01522 558855