A 38-year-old woman suffered a suspected broken leg after her lorry upturned on the A1028 near Skendleby on Monday, trapping her inside.
The Normanby-le-Wold woman was freed by firefighters and taken to Boston Pilgrim Hospital after the accident between Stone Pit Lane and Dawby lane on Monday afternoon.
Police said the articulated lorry spilled 42 tonnes of grain, closing the road until 8.30pm while a farmer removed it.
There were no other vehicles or people involved.
4.40pm Monday - A woman has been trapped inside an articulated lorry after it overturned on the A1028 near Skendleby, spilling 42 tonnes of grain.
Lincolnshire Fire and Rescue are attempting to rescue the woman, who is reported to be conscious and without obvious injuries.
The 44 tonne vehicle overturned between Stone Pit Lane and Dawber Lane shortly after 3.30pm.
Lincolnshire Police has closed the road between the crossroads and ‘just past the S bends’ and advised motorists to seek alternative routes.