A lorry has crashed into the central reservation of the A1(M) this morning (Thursday) and overturned.
The crash closed the northbound carriageway between the York turn-off at Junction 44 and Junction 45 for Boston Spa.
First reported at 5am, by 7.15am two of the three lanes have since reopened.
The incident has caused severe delays for early morning traffic. The AA is reporting traffic is taking around 40 minutes to get through the junction.
Highways England put in place diversions while the road was closed.