The accident, which only involved the truck, closed Titirangi Rd between Great North Rd and Margan Ave in New Lynn.
Emergency services doused a leaking fuel tank with absorbent.
Police say the truck driver managed to escape without injury.
Fire and Emergency northern shift manager said the crashed truck was left on its side blocking the road underneath the bridge.
While the 10-wheeler truck was not carrying dangerous goods firefighters were protecting the scene, applying absorbent to a fuel leak coming from the smashed vehicle.
Meanwhile a driver is being flown to hospital after two trucks crashed south of Thames this morning.
Police are warning motorists the Kopu-Hikuai Rd will be closed for 30 minutes while the rescue helicopter lands and takes the injured person to hospital.