Question: What name is locally known for a state route in Kern County, California which is a  truck route, connecting the agricultural land south of the county seat and east of SR 99/I-5, and the city of Arvin?
Sentence (from "California State Route 223"): State Route 223 (SR 223) is a state route in Kern County, California, and is locally known as Bear Mountain Boulevard.
Relevant evidence: Yes