Police were called today (August 17) at 11.48am following a one-vehicle collision on the southbound carriageway.
The collision involved a motorhome.
Three fire engines attended the scene.
A Cumbria Fire and Rescue Service spokesman said: “Crews assisted police and ambulance service and were in attendance for around 40 minutes.”
The M6 was closed southbound between junctions 40 and 41 and drivers are asked to avoid the area.
All lanes have now reopened.