Emergency services are on the scene after a multi-vehicle crash on the M1 near Sheffield.
National Highways say three of the four M1 southbound lanes are currently closed as a result of the crash. One lane is closed northbound.
National Highways said in a statement: "Three, of four, lanes are closed on the M1 southbound within junction 31 near Sheffield due to a collision involving at least four vehicles.
"All emergency services are on scene."
It is not known if anyone has been injured in the collision. South Yorkshire Police have been approached for information.
National Highways said there were currently just under two miles of traffic jams on the approach the location of the crash.
They described the incident as 'severe'
They said delays were expected until nearly 6pm
1. Emergency services
Emergency services at the scene of an incident at on the M1 near J31 this afternoon, involving several vehicles Photo: National Highways
2. Traffic jams
Traffic jams as a result of the collision on the M1 near J31 near Sheffield earlier today Photo: National Highways