The main road between Lincoln and Skegness is blocked after a two car crash.
A Volkswagen Golf and a Toyota Aygo have collided in High Street, Horncastle.
Police and firefighters have been called to the scene and a woman is being cut free from the Toyota, although it is believed no one is seriously injured.
The A158 has been blocked in both directions, which is causing lengthy tailbacks. A diversion is being set up.