Two lanes were blocked on the M1 northbound between J15A and J16 due to a collision earlier on this afternoon (1/12).
Following a collision on the M1 between J15A and J16 this afternoon, two lanes were blocked to oncoming traffic.
There were delays of up to 45 minutes.
Northamptonshire Police were on the scene.
The road is now cleared and traffic is beginning to clear.
14:31- AA Traffic reports average speeds of 15mph.