The carriageway was closed for several hours overnight but was reopened at about 08:30 on Wednesday.
A woman has died in a crash between a lorry and a car on the M20 in Kent.
The driver of the Mini was uninjured, Kent Police said.
The woman, who was a passenger in the lorry which overturned, died at the scene. The driver of the HGV suffered minor injuries.
A Scania HGV and Mini Cooper crashed on the coast-bound carriageway between junction 10 near Ashford and junction 11 at Stanford at about 17:10 GMT on Tuesday.