Question: What San Francisco street that is famous for a section known as "the crookedest street in the world" is partially designated as part of U.S. Route 101?
Sentence (from "Lombard Street (San Francisco)"): Lombard Street is an east–west street in San Francisco, California that is famous for a steep, one-block section with eight hairpin turns. Stretching from The Presidio east to The Embarcadero (with a gap on Telegraph Hill), most of the street's western segment is a major thoroughfare designated as part of U.S. Route 101.
Relevant evidence: Yes