One person died in the crash. There were no reports of any other injuries, police said.
The road is expected to remain closed for some time.
Two dead, including 12-year-old, in Chch crash
The crash follows a deadly collision early this morning in Christchurch.
Two people - one of them a 12-year-old child - died and a further three people were seriously injured in the crash, which happened at the intersection of Russley and Yaldhurst Rds.
It is understood two of the three seriously hurt are children.
Police and St John ambulance were called to the scene shortly after 12.20am, after a truck and a car rolled at the scene.
The road has been closed overnight, but is expected to open shortly.
The serious crash unit is in attendance.
Meanwhile, two people were killed in a serious crash in Mangatainoka, in the Tararua District, on Thursday night.
Police were alerted to the two-car crash at the intersection of State Highway 2 and Mara St around 5.45pm.