Authorities say a South Carolina woman fell to her death from a bridge early Saturday while attempting to help the victim of a truck crash.

The Greenville County Coroner's Office said that Jessica Nicole Smith, 29, was a passenger in a car that came across the wreck at the intersection of Interstate 385 and U.S. Highway 276. Witnesses said Smith got out of her car and went to the truck, checking the cab and bed for victims.

Coroner Parks Evans said Smith then leaned over the edge of the bridge calling out for anyone.

"It is believed she heard a voice, placed one leg over the bridge, and then another, thinking the ground was close," Evans said. However, Smith fell 23 feet to the base of the bridge and was pronounced dead shortly thereafter.

Witnesses told WYFF that Smith was responding to a man yelling for help from the road below. They said the man was somehow thrown from his truck and landed on Highway 276. The man's medical condition was not clear late Sunday, but the coroner's office said he survived his fall. 

Family members told WYFF that Smith was a certified nursing assistant who leaves behind a 9-year-old son, Isaiah. 

"If anybody ever needed help Jessica was always there. She'd go out of her way to help complete strangers, people she didn't know, and that's exactly what she was doing," her sister, Hope, told the station. 

Funeral arrangements are pending.

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