At least three cars were involved in an accident on the M1 near Lurgan, county Armagh.
The accident involving several cars happened between junction 9 at Moira and junction 10 at Lurgan before 9am.
One lane was closed southbound with emergency services on the scene.
There were no reports of injuries with the vehicles now removed from the carriageway.
Conditions are bad with roads slippery following heavy downpours.