State Highway 35 between Ōpōtiki and Gisborne is now officially closed after crumbling into a river due to the extreme weather.
SH35 at Motu River collapsed along the centre line this evening with the eastbound lane falling into the river.
Traffic had been reduced to a single lane due to the large crack in the road since Monday.
At a press conference today, Minister for Emergency Management Kieran McAnulty said there was a "high likelihood" that the highway would have to be closed.