Motorists heading northbound on the A1 are advised to drive carefully as they approach Colsterworth, south of Grantham.
A police operation to clear a site used as a location for an illegal rave is casuing heavy traffic congestion.
An estimated 200 people attacked police as they tried to deal with the illegal rave at Twyfood Woods, near Bourne, last night (Saturday), resulting in three officers and a police dog being injured.
A statement released by Lincolnshire Police has revealed about 1,000 people were at the ‘large’ rave, which the force were called to at about 11pm, following reports of ‘loud noise and anti-social behaviour’.
The statement said: “Police attended and found a large and illegal rave and the officers came under attack from an estimated 200 or so of the estimated 1000 or so who were at the site.
“As a result, three officers and a police dog were injured. One officer has a serious but not life threatening injury the other two officers have minor injuries. All the injuries were a result of missiles thrown from the crowd.”
Four people have been arrested, including three women aged 18, 20 and 21, from the Norfolk area and a man whose details are not available at the moment.
Police have urged people who were thinking of attending not to, adding: “They will be stopped from getting to the site by police.”
A number of sound amplification systems and generators were also seized and police remain at the site today.
A full investigation will now be carried out.