Snow and ice has forced the Desert Rd to close this morning.
Bay of Plenty police are warning drivers who were planning to travel along State Highway 1 to expect delays.
A diversion set up will add at least 40 minutes on your journey, police said.
State Highway 47 from Turangi to National Park is also closed.
The Napier-Taupo Highway is opened but motorist are urged to drive to the winter conditions.