Oceanside police said the woman was asleep when the tractor operated by a construction worker finishing part of a dredging project ran her over.
A man saw the woman before the incident.
“I was going surfing around 8:30 this morning. There was a woman who was leaning against a wall, she looked like she was going to pass out,” Jay Burneo said. “I went surfing and then I walked out and saw her laying on the beach passed out.”
The tractor was operated by Manson Dredging, a heavy equipment company contracted by the United States Army Corps of Engineers.
The woman’s body was taken to the San Diego County Medical Examiner’s Office for an autopsy.