Officers responded Wednesday morning to Cedar and Floradora avenues for a non-injury hit-and-run crash.
Investigators say the driver of a Dodge Caliber struck a pole on the west shoulder of Cedar.
Debris and wires from the pole are the cause of the closure and crews are working to clean up the mess.
It's currently unknown how long southbound Cedar Avenue will be closed. Northbound traffic is not impacted.
According to the PG&E website, electricity services were not affected by the crash.