
Emergency services were called to the crash about 6.20am on Thursday.
Police say a vehicle has hit the barrier. The crash scene was cleared about 7.15am but Waka Kotahi NZ Transport Agency say motorists should expect delays.
A Waka Kotahi spokesperson said the crash caused considerable congestion in the southbound lanes and motorists should take extra care.
A Fire and Emergency NZ spokesman said crews attended to clear the scene and assist police.