UPDATE (8:09 p.m.) One lane reopen, one lane still closed. 

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Two south bound lanes are closed on Highway 99 near Kimberlina Rd. after a semi-truck caught on fire. 

It happened just before 7:00p.m. on Highway 99 near Kimberlina Rd.

The California Highway Patrol has blocked off the two lanes closest to the shoulder and are moving traffic through the third lane and center divider.