A multi-vehicle collision on the northbound 55 Freeway in Tustin flipped two vehicles over, prompting authorities to close down all lanes for more than an hour, according to Caltrans Orange County.
The crash happened at around 5 a.m. near 17th Street and involved at least three vehicles, according to the California Highway Patrol.
One vehicle was on its roof and another on top of the center divider, CHP said.
All lanes were reopened as of 8:05 a.m., according to CHP.
It is unclear whether there were any injuries in the collision.
The 17th Street off-ramp on the freeway was closed down. Southbound lanes were not affected.
No further information was immediately available.