Massive delays are expected near Waihi this morning after a truck and trailer flipped on State Highway 2 at Karangahake Gorge.
Police are attending the crash, which happened between Waihi and Paeroa and advise road closures are in place.
Heavy moving equipment will be required to clear the highway. One lane is expected to remain open most of the time until the road will be cleared.
Police Inspector Kerry Watson said considerable congestion was likely to occur and it was estimated the road would not be cleared for some time.