Police said the tragic accident happened a little before 2 a.m. after the woman, who was driving a white Lincoln MKZ southbound on the freeway, crashed off the roadway, hitting two road signs and was thrown out of the car, along with her 2-year-old daughter.
The car unfortunately ended rolling over the mother over as she was unconscious.
Police said the mother was not wearing a seat belt.
Police also said her 6-month-old infant, the 2-year-old toddler, and a 12-year-old girl who were inside the car at the time were also not wearing seat belts. All three children suffered minor injuries and were taken to a local hospital.
Police said the investigation is continuing.