The road remains closed, and motorists are advised to delay travel through the area.
“Police do not recommend a detour through Hawksburn Road from Clyde to Bannockburn as it is narrow and unsuitable for 2wd vehicles,” the spokesperson said.
A Hato Hone St John spokesperson earlier said they responded with two ambulances and one manager to the crash on Cromwell-Clyde Road at 6.34am.
The spokesperson said one patient was assessed and treated at the scene, but referred any further inquires to Police.