Diversions have been put in place due to the incident.
National Highways is urging northbound traffic to follow the route marked with a hollow circle symbol on local road signs:
Exit at J11 and at the roundabout take the first exit on to the A10
Follow the A10 through Harston, Melbourn to Royston
At the roundabout with the A505 take the third exit
Head west on to the A505 to the next roundabout with the A1198
Take the third exit on to the A1198
Follow the A1189 through Kneesworth and Whaddon Gap
At the roundabout with the A603 take the third exit
Follow the A603 eastbound through New Wimpole and Barton to J12 of the M11
At the first junction roundabout take the first exit to re-join the M11 northbound
Southbound traffic is encouraged to follow the route marked with a hollow square symbol on local road signs:
From M11, J12 exit slip road, go onto Grantchester Road.
Continue on the Grantchester Road, to the Barton Roundabout.
At the Barton Roundabout take the third exit onto A603, Barton Road.
Continue on the A603, through Barton Village and New Wimpole Village to the A603/A1198 Roundabout.
At the roundabout take the first exit onto A1198 south to Royston.
Continue on the A1198 through the village of Kneesworth to the A1198/A505 Royston Bypass Roundabout.
At the roundabout take the first exit onto the A505 east.
Continue on the A505 to the A505/A10 Royston Roundabout.
At the Royston Roundabout diverted traffic can either, take the first exit onto the A10, through Harston and rejoin the M11 at Junction 11, or take the second exit onto the A505 east and rejoin the M11 at Junction 10.
Motorists are being encouraged to allow extra journey time.
