Q: Answer the question from the given passage. Your answer should be directly extracted from the passage, and it should be a single entity, name, or number, not a sentence.
Passage: Fresno is served by State Route 99, the main north/south freeway that connects the major population centers of the California Central Valley. State Route 168, the Sierra Freeway, heads east to the city of Clovis and Huntington Lake. State Route 41 (Yosemite Freeway/Eisenhower Freeway) comes into Fresno from Atascadero in the south, and then heads north to Yosemite. State Route 180 (Kings Canyon Freeway) comes from the west via Mendota, and from the east in Kings Canyon National Park going towards the city of Reedley. Question: What is another name for State Route 168?
A:
Sierra Freeway