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Oakton, VA (May 18, 2026) – Two adults were killed, and two children were injured in a violent single-vehicle crash over the weekend in Oakton, according to Fairfax County authorities.
The crash happened just after midnight on Sunday, May 17, when a Mercedes GLA 250 was traveling east on the Interstate 66 Express Lanes and exited onto Chain Bridge Road. Investigators said the vehicle continued through an intersection, struck a median, and then crashed “very violently” into a barrier on the opposite side of Chain Bridge Road.
Detectives stated that speed played a major role in the crash, noting the vehicle was traveling 116 mph as recently as five seconds before impact, based on data recovered from the vehicle. Officials confirmed that only one of the children inside the car was properly restrained.
The driver, identified as 30-year-old Xiomara Herrera of Falls Church, was pronounced dead at the scene. The front-seat passenger, 27-year-old Alejandro Rodriguez Castillo of Sterling, later died at a hospital. A two-year-old child suffered life-threatening injuries and remains hospitalized, while an eight-year-old child was also injured.
Authorities continue to investigate the circumstances surrounding the crash and are maintaining contact with the victims’ families.
We extend our sincere condolences to those affected by this tragic incident.
Why High-Speed Exit Ramp Crashes Are Often Severe
Crashes involving high speeds on exit ramps are especially dangerous because drivers must quickly reduce speed while navigating curves and transitions between highways and surface roads. At extreme speeds, even minor steering adjustments can lead to loss of control.
When a vehicle leaves the roadway and strikes a barrier, the sudden deceleration can cause catastrophic injuries to occupants. Investigators typically analyze vehicle speed data, roadway design, and seatbelt use to understand how the crash unfolded. Proper restraint use is especially critical in preventing fatalities and reducing injury severity in high-impact collisions.
