Houston TranStar reported the incident just after 11 a.m. on I-10 Katy eastbound at the I-610 West Loop connector ramp.
At one point, TranStar cameras showed heavy smoke coming out of the truck.
According to TranStar, the truck was cleared, and the lanes were reopened at about 5 p.m.
It's unclear what led to the fire, or if any injuries were reported.
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