A lorry fire on the M1 has caused heavy traffic spanning five miles this morning, Monday, March 25.
Highways England said the lorry is between J19 and J18.
One lane is still closed.
A Highways spokesman said: "There are 45 minute delays on the approach to this M1 incident (above usual journey times) spanning 5 miles back to J20.
"Average speeds on the approach to J19 are 11 mph. Please plan ahead if travelling in the region this morning."
Update from Highways England at 8,40am: "We have reopened all lanes J19 to J18 Southbound M1. The Emergency Refuge Area remains closed whilst contractors deal with the damage to the area."