It happened Saturday night, just after 10:30 p.m.
The victim was taken to an area hospital but later died from his injuries. The Allegheny County Medical Examiner has identified the man as William Hopkins, 34, of Castle Shannon.
There is no word on any suspects at this time.
Allegheny County Police are investigating. Anyone with information is asked to call the County Police Tip Line at 1-833-ALL-TIPS. Callers can remain anonymous.