All westbound lanes of the H-1 freeway were closed overnight after a single motorcycle collision killed a 20-year-old male.

According to the Honolulu Police Department, the motorcyclist was traveling west on the freeway near Kualakai Parkway a high rate of speed when he lost control and struck a metal guardrail.

The male, who police say “may have been” wearing a helmet, was ejected from his motorcycle and landed behind the freeway guardrail. He died at the scene.

Police closed the freeway at approximately 11:30 p.m. Saturday. All lanes were reopened by 2:15 a.m. today.

According to HPD, this is the 58th traffic fatality of 2018, compared to 36 in 2017.

Anyone with additional information regarding this incident is asked to contact HPD’s Traffic Division at 723-3413.