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 "Washington State Route 509"): Various proposals since 1988 have recommended building a freeway extension of SR 509 within the city of SeaTac, connecting the Burien Freeway to I-5, that remains unbuilt.
Relevant evidence: No