All lanes of eastbound State Route 52 where it connects with State Route 125 reopened after a big rig trailer caught fire.
The truck driver, John Luis Rodriguez, was headed to Yuma, AZ with a load of flowers from a nursery in Fallbrook.
A tire on the trailer caught fire about 3 a.m.
Rodriguez told NBC 7 he tried to put the fire out himself.
"For a second, the fire is out, then it started again. But my extinguisher is empty," he said.
Rodriguez then called 911 for help.
No other information was available.
Check back for updates on this breaking news.