Emergency services were called to Meadow Lane in North Hykeham after a double decker bus crashed into a ditch.
The bus veered onto the opposite side of the road before crashing into a tree in a ditch at around 7.20am on Saturday June 13.
The road was closed to motorists in both directions.
Lincolnshire Police, Lincolnshire Fire and Rescue and ambulances have attended the scene.
Police have confirmed the bus was the only vehicle involved in the crash.
Officers say it is not clear how many people where on the bus but three persons were injured.
Two suffered minor injuries and one man sustained a laceration to his leg which required hospital treatment.
The road is still closed whilst the bus is being recovered but should be open by around 1:00pm today.