An 18-wheeler hauling boxes of flowers overturned Wednesday morning in Terrell, closing westbound lanes of State Highway 80.
It happened before 4 a.m. near Highway 80 and Spur 557.
A hazardous materials crew was sent to the scene to clean up fuel that had spilled.
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Authorities have not yet said when they expect the highway to reopen.
Use Interstate 20 to avoid the backup around the crash scene
No other information was available.