State Highway 7 has both lanes open again after a multiple vehicle crash on Wednesday reduced it to one lane.
Two trucks, a car and a van crashed 15km northwest of the Hanmer Springs turn off at about 8.30am.
A police spokesman said a truck had gone off the road in the crash but there were no serious injuries.
It’s the second crash in the area on Wednesday.
A truck rolled on State Highway 65 near Maruia at 2:30am.
The driver had moderate injuries and was been airlifted to hospital.
The road was blocked for about six hours with traffic diverted through Reefton.