A Sig alert has been issued for a stretch of Interstate 8 at Lake Jennings Park Road in Lakeside after a rollover crash.
The accident involving one car happened at approximately 10:55 a.m. Wednesday on the westbound road.
Firefighters on scene worked to rescue the driver. It is unclear how many people were in the car.
The car rolled over and landed on its side, San Diego Fire-Rescue officials said.
One lane was blocked as crews worked and another was open to traffic. The second lane was open to traffic.
No further information was available.