State troopers responded to the scene, the ramp from Highway 18 to northbound Interstate 5, after receiving a report of an SUV upside-down in the ditch.
A preliminary investigation found that the SUV hit the meter lamp on the on-ramp then rolled over onto its roof into the ditch alongside the freeway.
When troopers arrived, the driver tried to run away but he did not get very far. He was taken into custody then transported to St. Francis Hospital for treatment.
He is now in jail for investigation of DUI.
The crash partially blocked the ramp from Highway 18 to northbound Interstate 5 for a few hours, but the scene has now been cleared.