Emergency services are at the A159 near Gainsborough after a serious crash between a lorry and a car.
Blyton, just north of Gainsborough, is blocked up with heavy traffic as a result of the crash which happened at 2.17pm on Tuesday.
A Lincolnshire Police spokesperson said: “A collision between a car and a lorry was reported to us at 2.17pm.
“A woman is injured and is being taken to hospital. The baby is not thought to be injured but is also being taken to hospital as a precaution.
“The injuries are not thought to be life-changing or threatening.”