Three people were taken to hospital after a crash between a car and van blocked the A1 southbound.
The crash happened at 12.12pm on Sunday, July 2 at Marston, to the north of Grantham.
The driver of the van, and the driver and passenger of the car were taken to hospital.
Police have said that their injuries were not serious or life-threatening.
The road was blocked but reopened at around 1.30pm.