The on-ramp would remain closed “for some time” while the truck was removed, he said.
Police have asked motorists to avoid the area or expect delays.
A witness told the Herald the tanker truck was carrying chicken offal, and reported seeing animal remains on the road.
Raphael Franks is an Auckland-based reporter who covers business, breaking news and local stories from Tāmaki Makaurau. He joined the Herald as a Te Rito cadet in 2022.
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