There is severe congestion on both sides of the M1 carriageway in Northamptonshire due to broken down vehicles.
There are long delays and slow traffic on the southbound between junction 17 and 16 due to a broken down vehicle in the roadworks.
All lanes have now reopened but traffic is queueing back to junction 18.
On the northbound carriageway another broken down vehicle is also causing delays.
One lane is closed and there is queuing traffic between junction 16 and 17 because of the broken down lorry in the roadworks area.
Vehicles are queuing back to junction 15.