A section of the M1 has been closed after an incident on the road on Tuesday.
Both the southbound carriageway between junction 16 and junction 15a and the southbound entry slip road at junction 16 are shut off.
The Highways Agency has warned of severe delays on the motorway, with the junction only expected to open again at 5:15pm.
The northbound routes is also experiencing delays because of the accident but the agency said they were only minor.