A 25-year-old man was killed when he jumped off of a Queens overpass onto a busy highway where he was struck by a vehicle, authorities said.

The man was seen climbing a fence on Jamaica Avenue before throwing himself onto the Van Wyck Expressway around 10:20 p.m. Saturday.

The man was then hit by a 33-year-old man driving a Ford Taurus and was later pronounced dead.

The driver remained at the scene.