A four-vehicle crash on the M6 between Wigan and Warrington is causing delays this morning (Wednesday, June 5).
All southbound traffic was stopped at around 7am, between junctions 24 (Ashton-in-Makerfield) and 21a (Croft Interchange), after a crash in the outside lane.
The vehicles have been towed to the hard shoulder to await recovery, and debris has been cleared from the carriageway.
Traffic has been released, with all lanes now open.
But severe congestion remains, with a ten-mile tailback of traffic queuing past Ashton-in-Makerfield and reaching junction 26 at Orrell.
Highways England has advised that the congestion might lead to delays of up to 60 minutes against normal traffic conditions.
According to Traffic England, congestion is expected to clear between 8.15am and 8.30am.
Matrix signs are in operation and some variable speed limits remain in place on approach to the congested stretch of motorway.