The crash between a crash and a tractor on the Tauranga Eastern Link is now fully cleared.
The crash happened around 7am and emergency services arrived 30 minutes later.
The crash happened between the Kaituna River Bridge and the Parton Rd overpass on the sweeping bend.
A St John spokeswoman said one person was treated at the scene in a moderate condition.
A police spokeswoman said there was some diesel was on the road and a heavy haulage vehicle had been called to move the tractor which was partially blocking one of the lanes.
Fire and Emergency New Zealand responded with two trucks and one has since left.
Power pole arcing after large truck reverses into it
Detours are in place due to a large truck crash into a power pole on State Highway 2.
The northbound lanes between Barrett Rd and Youngson Rd in the Whakamarama area are closed. Southbound lanes remain open.
A truck driver was concerned about an arcing power pole on the highway after he reversed into it this morning.
Police were called around 8.22am after a large truck and trailer reversed into a power pole on State Highway 2 opposite Gill Lane in Whakamārama.
A police spokeswoman said there had been damage to the power pole which was arcing, but it was still upright.
She said the driver was not injured but was not moving the vehicle until police arrived as he had concerns about it falling onto the highway.
Waka Kotahi said Northbound traffic will detour left to Barrett Rd, right to Old Highway, then right to Youngson Rd to return to State Highway 2.
This detour is not suitable for heavy vehicles which should use State Highway 29/27 or delay travel.
Southbound traffic remains on State Highway 2.
More to come.