A 27-year-old bicyclist died after he plunged from the upper level of the Manhattan Bridge to the lower roadway, police said Saturday.

Sam Hindy and a friend were riding their bikes in traffic to Brooklyn on Friday night but apparently stopped about halfway over the span to turn around, police said.

Hindy then hit a barrier, causing him to plummet through a gap between the lanes to the lower level.

After plunging 30 feet, he was struck by a Toyota heading east on the lower level, and was pronounced dead at New York Downtown Hospital.

A witness on the bridge said the victim may have been drunk. His friend on the other bike was not hurt and refused to talk to a reporter at the accident site.