A1 closed after vehicle overturns

The A1 in Lincolnshire is closed northbound between the A151 (near Colsterworth) and the B6403 due to a collision involving an overturned trailer which was transporting livestock.
Lincolnshire Police are in attendance, alongside Highways England contractors who are assisting with the clear-up and recovery operation which is expected to take some time.
Traffic is being diverted via local routes.