Police are dealing with a serious accident on the A15 at Morton.
A section of the road near the B1177 junction has been closed while emergency services are on the scene.
Motorists have been asked to avoid the area for now.
A Lincolnshire Police spokesman said the road was expected to be closed for several hours.
“At 10.55am we received a report of a serious collision on the A15 at the junction of the B1177 in Morton.
“An Audi A3 and a Mini Cooper were involved in the collision.
“The road has been closed in both directions from Haconby cross roads to south of Morton.
“The road is expected to remain closed for some time.”
An air ambulance attended the scene and any witnesses to the collision are asked to call 101 with incident reference 145 of 17 December.
This is a developing story and more details will be published as they become available.