Long delays reported on M1 after crash

More than four miles of traffic is being reported after a crash on the M1
Traffic on the M1 at J39.Traffic on the M1 at J39.
Traffic on the M1 at J39.

The incident shut the northbound carriageway between J39 Durkar and J40 Ossett about an hour ago

Highways say delays are now back to J38 with a 30 minute wait.

Average speeds are down to 10mph.