PHILADELPHIA (WPVI) -- Philadelphia police say members of a family were trying to fix a broken-down car on a highway overpass when one of them fell 30 feet.
It happened at 12 a.m. Monday on the off-ramp from I-95 to the Vine Street Expressway in the city's Chinatown section.
Officers say the 18-year-old victim lost his balance and fell onto 8th and Vine streets.
He suffered a serious head injury and was undergoing surgery at an area hospital.
Police were working to determine what caused the man to fall.
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Man falls 30 feet from I-95 ramp in Chinatown section of Philadelphia