TRACY, Calif. — Emergency response teams faced significant challenges Tuesday afternoon after a fuel trailer overturned on Interstate 205, leading to a full closure of the highway and extensive traffic delays. The incident occurred just west of the Alameda County line and involved a tractor-trailer carrying a hazardous mixture of gasoline and ethanol.
The California Highway Patrol (CHP) reported that the accident happened around 1:05 p.m. when the left front tandem wheel of the second trailer malfunctioned, causing it to tip over. As the situation unfolded, authorities closed not only the westbound lanes of I-205 but also the westbound onramp to Interstate 580, creating severe backups that affected the evening commute. Commuters reported delays of five hours or more, stretching along alternate routes such as Patterson Pass Road.
Upon arrival, firefighters from the South San Joaquin County Fire Authority discovered the overturned trailer precariously positioned beneath the Interstate 580 overpass. The sole occupant of the truck was unharmed but was able to confirm the presence of ethanol fuel in the trailer. Fire crews quickly assessed the hazards, noting a small leak of the flammable substance that they were able to mitigate.
Battalion Chief Nathan Howell, who served as the incident commander, emphasized the importance of safety during such emergencies, stating that a risk radius of 150 feet was established for precautionary measures. Crews had to remain vigilant for potential fire hazards while preparing to transfer the fuel safely. In coordination with the trucking company, a safety supervisor was dispatched to assist with the containment efforts.
With the leak managed within the first half-hour, teams shifted focus to transferring the ethanol from the damaged trailer to another tank. Deputy Chief Mike Frederick outlined their methodical approach to the operation, highlighting the trained hazmat personnel who monitored air quality and grounded the truck to prevent any static electrical sparks.
The transfer operation commenced shortly before 6 p.m., with firefighters cutting through multiple compartments in the trailer to access the fuel. The process involved careful coordination to ensure safety, as each of the two larger compartments contained 1,700 gallons and another held about 800 gallons.
Frederick remarked on the specialized training that responders undergo for incidents involving hazardous materials. “These situations are complex and carry unique risks,” he said. “While we prepare for them, they are rarely encountered in a career, underscoring the expertise of our personnel in managing such emergencies.”
By approximately 9:30 p.m., the roadway had been cleared after successfully transferring the ethanol and securing the damaged trailer for transportation. The operation showcased the effective collaboration between fire crews and CHP, ensuring the safety of the public while minimizing disruption during a busy travel period.