Police say the M6 northbound between Junction 32 at Preston and Junction 33 at Lancaster isn’t expected to fully reopen until between 2.15pm and 2.30pm
A Lancashire traffic spokesman said: “There is one of three lanes closed.
"Normal traffic conditions are expected between 14.15 and 14.30.”
The incident involved a car catching fire late this morning, with Lancashire Fire and Rescue attending the scene.
It is understood only one car was involved.