Motorists were earlier advised to expect significant delays in the Crankill Road area of Ballymena - after it was closed in both directions following a two-vehicle road traffic collision.
At the time a PSNI spokesman said diversions were in place.
Pictures taken at the scene appear to show a number of vehicles sitting stationary. The Air Ambulance attended the scene along with the PSNI, Fire Service and Ambulance.
A Tweet on PSNI Roads Policing said: "Motorists advised to expect significant delays in Crankill Road area of Ballymena, which has been closed in both directions following two-vehicle road traffic collision. Diversions in place. Heading north this is via the Fenagh Road and southbound via the Loughnagarry Road."
The route has since been reopened.
A statement from the Department of Infrastructure said: "Co Antrim: A26 Crankhill Road Dual Carriageway (north of Ballymena) has