The California Highway Patrol issued a SigAlert for State Route 76 after a car ran into a power pole in the Rincon area.
The collision happened around 4 p.m. on SR 76 near Valley Center Road.
The pole and power lines fell across the road when the car crashed into it, and the energized lines created a hazard for other drivers. CHP officials closed the highway in both directions for about three hours.
No one was injured.
The driver, 21-year-old Stephen Want of Pala, was booked into the Vista Detention Facility on suspicion of DUI, according to officials.
SDG&E was called to turn off the lines so crews could clean up. The utility's outage map showed that 650 customers were without power for roughly an hour.
CHP says SDG&E and AT&T will be working on the pole into Monday morning, so drivers are asked to avoid the area.