It is the second big crash to impact the Northwestern Motorway today.
Earlier, around 6.30am, two southbound lanes before the Royal Rd on-ramp were blocked after a car smashed into the barrier.
Auckland Transport said the “huge crash” disrupted bus routes between Pavolich depot and Westgate.
NZTA Waka Kotahi said the crash has been cleared, however, traffic maps show that the congestion in the area is still heavy.
Another crash on the Southwestern Motorway was blocking the right southbound lane just before Hillsborough Rd on-ramp around 7.20am.
The crash was cleared quickly but Waka Kotahi is advising motorists to continue to expect delays.