WFAA-TV

The 18-wheeler toppled from an overpass to a street below.

DALLAS - A deadly and bizarre multiple-vehicle accident Wednesday in downtown Dallas has two families grieving.

Twenty-year-old Ashley Parra was driving on Continental Avenue when she was killed after an 18-wheeler fell onto her car as it dove off the Woodall Rogers Freeway ramp that leads to Interstate 35. The driver of the truck, 38-year-old David Simonellis of Bedford, was thrown from the vehicle and also died.

Authorities said it appeared the truck's load, a large amount of metal pipe stems, may have shifted and led to the deadly accident.

A waitress at Hooters, Parra was only a half mile from her work when the truck drove off the ramp.

"She was a just a good kid," said Susan Castro, Ashley's grandmother who raised the University of North Texas student since she was 9-years-old. "If she said she was going to be somewhere, that's where she was going to be."

Castro said Parra's reliable nature was the reason she began to grow concerned when she heard Parra had not shown up to work.

"I can't believe it," she said. "It's so hard to believe. I just saw her yesterday."

Castro said Parra drove the same route to work everyday.

Parra was in her first semester at UNT and was studying to become a teacher. Before that, her grandmother said she spent two years studying law at Southern Methodist University.

Castro said Parra loved horses, was on the school's equestrian team and had a passion for traveling.

She had also promised to take her grandmother exploring across the country.

"She had good grades," Castro said. "[She] had a lot of potential, and she was going to grow up and be somebody someday and now she's gone."

A scholarship fund honoring Parra has been established by Townview Magnet Center, which is where Parra graduated from in 2005. The school is accepting donations for the scholarship through an on-campus foundation that raises money for school activities.

Donations should be made to the Friends of the Dallas Law Magnet High School and sent to 1201 E. 8th St., Dallas, Texas, 75203. The foundation asks that those donating indicate somewhere that they wish that money to be directed to the scholarship fund in honor of Parra.