Two trucks collided on the Kilmog Hill. Photo: Gregor Richardson
The northbound lane on the Dunedin side of the Kilmog was blocked after a minor collision between a truck and a fertiliser truck just before 4pm.
A police spokeswoman said the southbound lane remains open but motorists are asked to please drive with care.
A St John spokesman said an ambulance and rescue helicopter were deployed.
A man sustained minor injuries and was taken by ambulance to Dunedin Hospital's emergency department.
