A truck has rolled on the Desert Rd partially blocking State Highway 1.
A police media spokesperson said there were no injuries but the road was down to one lane and there would be delays for the next three to four hours.
The call came through to police at 9.16am.
A message on the Bay of Plenty/Taupo police Facebook page said the incident was near the Three Sisters.
A statement from the Police Media Centre said traffic is being diverted via the National Park (SH47) after a truck rolled on the Desert Road just after 9am.