The person, believed to be Craig Clapperton, was reputed to be in a stable condition in Dunedin hospital last night.
Police said they were alerted to the two-vehicle crash on SH1 near the intersection with Mile Flat Rd about 7.30am.
The crash involved two trucks, police later confirmed.
A Hato Hone St John spokesperson said one ambulance, one prime responder, one helicopter and one operations manager attended the scene.
A witness at the scene said traffic was lined up for 5km either side of the closure.
He said the crash occurred between a bulk carrier truck and a logging truck and trailer.
A power pole was also damaged in the crash.
Emergency services had to free the driver of the bulk carrier from the cab before they were airlifted to Dunedin Hospital, the witness said.
The road was closed all morning, although partially reopened with one lane operating and traffic management allowing cars through in both directions, police said in an update about 12.10pm.
NZ Transport Agency Waka Kotahi said the road had been closed between SH1’s intersections with Mile Flat Rd and Findlays Rd.
It fully reopened about 3.35pm.
The Serious Crash Unit was reportedly on site.
— Allied Media
