A Reston woman is dead after she was thrown from her car in a crash on Interstate 95 in Fairfax County, Virginia State Police said.

According to authorities, Stephanie D. Garcia, 29, was driving south Saturday just before 7 a.m. when she went off the left side of I-95 and made an illegal U-turn on the shoulder, just south of the Capitol Beltway near the Franconia-Springfield Parkway.

Police said that Garcia stopped on the southbound shoulder, facing north, then pulled into the southbound Express Lanes and struck a southbound car head on.

The impact spun Garcia’s car around and it struck a Jersey wall. The other car overturned and came to a rest on the right shoulder.

According to police, Garcia was not wearing a seat belt and was thrown from the car. She was taken to Fairfax Inova Hospital, where she died the next day.

The driver of the other car was taken to a nearby hospital with serious injuries. The 72-year-old was wearing a seat belt, police said.

The crash, which closed the Express Lanes from I-395 Saturday morning, remains under investigation.