A crash involving a car and a lorry closed parts of the M1 near Northampton earlier today (Tuesday).
Emergency services closed the motorway southbound between junction 17 for Dunchurch and junction 16 for Daventry and Northampton west.
Diversions were put in place as a result of the crash involving a car and a lorry.
The northbound carriageway was also affected.
There were long delays in the area with miles of tailbacks.
All lanes were reopened this afternoon and traffic has returned to normal.