A Katikati man, who allegedly hit a motorcyclist on State Highway 2 before fleeing the crash scene yesterday, is facing a raft of charges including driving over the alcohol limit.

Police say the 25-year-old handed himself into the Katikati Police Station on Thursday after the crash near Loop Road that left a 48-year-old motorcyclist with leg injuries.

The 48-year-old motorbike rider remains in Tauranga Hospital.

He is charged with dangerous driving causing injury, driving with excess breath alcohol, failing to stop to ascertain injury, failing to render assistance and driving while forbidden.

Western Bay of Plenty road policing manager, Senior Sergeant Ian Campion, says when breathtested by police, the man blew over 900 micrograms of alcohol per litre of breath. The adult limit is 400 micrograms of alcohol per litre of breath.

The Katikati man is accused of being the driver of a car that crashed into a motorcyclist on State Highway 2, near Quarry Road, at about 5.40am yesterday.

Ian says the 48-year-old Tauranga motorcyclist was heading south towards Tauranga as a heavy truck was travelling north towards Katikati when another vehicle tried to overtake it and crashed into the motorbike.

'The motorcyclist managed to stay upright until he crashed into a culvert some distance down the road.”

The rider was taken to Tauranga Hospital with serious leg injuries. He remains in a ward in stable condition and is expected to have surgery tomorrow.

The 25-year-old is due to appear in Tauranga District Court on Monday.