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An 18-wheeler caught fire on westbound Interstate Highway 580 on Friday, July 18, 2025, igniting a vegetation fire and forcing a full closure of the freeway near Livermore, Calif., fire officials said. The blaze broke out around 6:30 a.m. east of Flynn and Grant Line roads, according to the Alameda County Fire Department. (Alameda County Fire Department via Bay City News)

Westbound lanes on Interstate Highway 580 reopened Friday afternoon after an 18-wheeler caught fire that morning, igniting a vegetation fire and forcing a full closure of the freeway’s westbound lanes in Alameda County, fire officials said.

The blaze broke out around 6:30 a.m. east of Flynn and Grant Line roads, near Livermore, according to the Alameda County Fire Department, which responded along with Cal Fire.

California Highway Patrol officers shut down westbound lanes of I-580 at Grant Line Road as crews worked to contain both the vehicle and vegetation fires. No estimate was immediately given on when the affected lanes will reopen.

No injuries were immediately reported, and the cause of the fire remains under further investigation. Firefighters continued mop-up operations along the hillside as of 6:40 a.m. Friday.

Later Friday Morning, ACFD shared on social media that forward progress had been stopped but the amount of acres burned is unknown. However, all westbound lanes remained closed for several more hours due to heavy smoke and cleanup of almonds on the road.

Just before 9 a.m., CHP posted an updated photo of the scene with both blazes extinguished on the X platform along with a notice that they were “working to open up a lane soon.”

As of 1:18 p.m., CHP reported all lanes were open.

The aftermath of an early morning big-rig fire that spread to the hillside on I-580 east of Flynn and Grant Line roads near Livermore. (Courtesy CHP Dublin)

Editor’s Note: EMF East Bay editor Cierra Bailey contributed to this report.

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