A truck driver has sustained a serious leg injury and the road remains closed following a crash at Waioeka Gorge on State Highway 2 near Opotiki last night.

Police were called to the crash, around two kilometres south of Tauranga Bridge, just before midnight on Friday, says a police media spokesperson.

"After rolling, the truck caught on fire.

"No other vehicles were involved.

"The truck driver was transported to hospital in a serious condition.

"Waioeka Gorge remains closed this morning and motorists are asked to use State Highway 35 until further notice."