NZ Transport Agency Waka Kotahi said on Monday the crash was beside the lake west of Tamateatutahi St, between Tikitere (SH33) and Kawerau Rd West (SH34).
Motorists were warned at the time to allow time for a “long detour”.
A Hato Hone St John spokesperson said one ambulance and one primary response in medical emergencies responder went to the scene.
The spokesperson said one patient in a moderate condition was being transported to Rotorua Hospital but referred any other information requests to police.