A witness said the road was closed for about two hours and it was several hours after that before the spilled logs were cleared.
Traffic built up for a couple of kilometres in both directions on the highway until the road reopened.
Meanwhile a crop harvester struck 11Kv powerlines in a farm paddock on Whakarau Road at around 9.30am on Saturday and it cut power to more than 60 customers.
“We had power back on to about 40 of them within an hour-and-a-half,” the network spokesman said.
The rest of the customers were reconnected later in the day Saturday.
“The driver of the harvester was lucky not to have been injured.”
Network staff were called to a vehicle crash on the East Coast Road at Mahia at 11am on Saturday after a car left the road and struck a concrete power pole.
“There was no power disruption in that case and the pole will be replaced today.”