The crash is ontinuing to cause ongoing issues, with the contents of the truck, believed to be peas, have spilled onto the road.
The truck is being recovered but it's understood there's a significant clean-up job.
This is causing blockages and delays stretching from Omahu to Links roads, both northbound and southbound.
Motorists are advised use a detour via Omahu Rd onto SH50 then onto SH2.
The incident was the second involving a truck on SH2 this morning.
Traffic was backed up on the highway south of Pakipaki, near Pekapeka wetlands, after large pipes fell from a truck.
An NZTA spokesperson said stop/go management had been in place since 6am following a losing its load on a corner.
At 12.50pm it was fully clear and traffic management had been lifted.
A crane has been onsite since 7am and the obstruction was still being cleared at 11.26am
A police spokesperson, who described the fallen items as "scaffolding and planks" said police were notified at 7.48am.
More to come.