A motorcyclist died Tuesday night after he drove straight into a Gibsonton intersection from a right-turn-only lane and struck a car, authorities said.

Mark Marzuco, 55, was driving a 2000 Harley Davidson east on Gibsonton Drive just after 6:30 p.m. and started to cross Mathog Road from a lane that was supposed to turn right.

The crash happened when a Honda Civic made a left turn from westbound Gibsonton Drive while eastbound traffic was backed up. The motorcycle struck the left front corner of the car, the Hillsborough County Sheriff's Office said.

Marzuco, who was not wearing a helmet, was thrown 35 feet after the impact. He was flown to Tampa General Hospital, where he later died.

Deputies did not say whether the driver of the Civic, 25-year-old Michael Moreno of Riverview, was injured.

Troopers are still investigating.