: Highway 90 in Slidell, Louisiana, approximately 30 miles from New Orleans.
An "avulsion" of the brain means that a significant portion of the skull was torn away, exposing or separating the brain tissue. While this injury was catastrophic, horrific, and immediately fatal, Mansfield's head remained attached to her body. The autopsy report formally categorized the death as an accident, noting that the massive cranial trauma caused instantaneous death, meaning she did not suffer. The Legacy of the Accident: The "Mansfield Bar"
Jayne Mansfield
: At the time of the crash, the adults in the front seat were not wearing seatbelts.
The Tragic Truth: Examining the Jayne Mansfield Autopsy Report jayne mansfield autopsy report
Finally, in an effort to put the rumor to rest, Jim Roberts, the undertaker who handled her remains, famously told The New York Times : . This statement, combined with the clinical data, confirms that while her injuries were catastrophic, the body was not entirely decapitated in the way the myth suggests.
The vehicle, a 1966 Buick Electra, struck the rear of a tractor-trailer that had slowed down due to a mosquito fogging truck. The Buick slid under the trailer, shearing off the top of the car and instantly killing the three adults in the front seat. The Autopsy Findings
Furthermore, Mansfield’s death directly led to a federal safety regulation: the After her crash, the federal government mandated that all tractor-trailers be equipped with a strong, low-hanging underride guard (a metal bar) to prevent cars from sliding underneath. While the myth of the decapitation lives on, the reality of the autopsy inspired a safety feature that saves hundreds of lives annually.
The roof of the Buick was completely peeled back by the underside of the semi-truck, suggesting to the public that anyone inside would have suffered a similar fate. : Highway 90 in Slidell, Louisiana, approximately 30
: Despite official records stating her body was "in one piece," the graphic nature of the accident—where the car's top was virtually sheared off by the truck's rear—fueled the legend for decades. Accident Context
The impact was devastating. The Buick slid directly underneath the rear of the trailer, shearing off the top of the car. The three adults in the front seat died instantly. Miraculously, the three children in the backseat survived with only minor injuries. The Birth of the Decapitation Myth
The Buick slammed into the rear of the tractor-trailer at high speed. The force of the impact caused the front of the car to slide completely underneath the trailer, shearing off the vehicle's roof and instantly killing all three adults in the front seat. Miraculously, the three children sleeping in the back survived with minor injuries. The Autopsy Report: Myth vs. Reality
While the autopsy report closed the book on the medical reality of Mansfield's death, the crash itself sparked a massive shift in transportation safety. The autopsy report formally categorized the death as
The autopsy revealed that Mansfield suffered a severe skull fracture, which caused significant damage to her brain. The report notes that the skull fracture was a result of the car's windshield shattering upon impact, which led to a massive head injury. Additionally, Mansfield sustained multiple lacerations and bruises on her face, neck, and body.
The rumor that Mansfield was decapitated began after police photographs of the scene circulated. These photos showed what appeared to be her blonde hair in the smashed windshield of the 1966 Buick Electra.
The rumor of decapitation likely originated from police photographs showing Mansfield’s blonde wig lying on the road or in the wreckage. In reality, the impact had caused a severe "scalping" injury rather than a full separation of the head from the body.
: This accident directly led to the National Highway Traffic Safety Administration (NHTSA) recommending underride guards on tractor-trailers. These bars are still commonly referred to as "Mansfield Bars" . Official Document Access