ANTIOCH -- Authorities have determined that a man who suffered major injuries Friday night after a fall onto the Antioch Bridge jumped out of the car he was in before hitting the ground.
The unidentified man, believed to be in his 30s, was discovered on the side of the highway about 7:45 p.m., California Highway Patrol Officer John Fransen said Saturday.
The man and his wife had just left his sister's Antioch home and were headed north on Highway 160 toward their Sacramento home, Fransen said.
The man's wife was driving and her husband was in the passenger seat, Fransen said.
"He was distraught after argument with his sister, opened the door and jumped out onto the roadway just north of the county line," Fransen said.
The Audi was likely moving at a rate of 50-60 miles per hour when the man jumped out, Fransen said.
The man was taken by medical helicopter to a hospital to be treated for major injuries, Fransen said.
As of Saturday he remained hospitalized in critical condition, authorities confirmed.
Both directions of Highway 160 were briefly closed while officials removed the man from the roadway and investigated the scene, but were reopened around 8:30 p.m.
Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.