All lanes reopend around 9:15 a.m. Tuesday. Traffic had been diverted onto northbound Highway 99 and westbound Highway 46, then back onto I-5.
All three truck drivers died in the crash. The Kern County coroner's office identified two of the drivers Wednesday as 45-year-old Robert Puga, of Lancaster, Calif., and 55-year-old Johnny Hannah from Oregon.
The third driver's name was withheld.
The California Highway Patrol said one of the drivers allowed his southbound truck to drift across the dirt center divider and into the northbound lanes - into the path of the two northbound semitrucks.
The CHP said it was investigating what prompted the driver's rig to veer into oncoming traffic.