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?

Context paragraphs:
Bayshore Freeway: The Bayshore Freeway is a part of U.S. Route 101 (US 101) in the San Francisco Bay Area of the U.S. state of California.  It runs along the west shore of the San Francisco Bay, connecting San Jose with San Francisco.  Within the city of San Francisco, the freeway is also known as James Lick Freeway, named after the California philanthropist.  The road was originally built as a surface road, the Bayshore Highway, and later upgraded to freeway standards.  Before 1964, it was mostly marked as U.S. Route 101 Bypass, with US 101 using the present State Route 82 (El Camino Real).

Maysilo Circle: The Maysilo Circle, is a roundabout in Mandaluyong City in the Philippines.  It is located a few kilometers from Mandaluyong City's border with Makati, just across the Pasig River through San Francisco Street.  The Circle serves as a junction point between the Northern and Southern Portions of Boni Avenue, F. Martinez Avenue, San Francisco Street, and Sgt. Bumatay Street.

U.S. Route 101 in California: U.S. Route 101 (US 101) in the state of California is one of the last remaining and longest U.S. Routes still active in the state, and the longest highway of any kind in California.  US 101 was also one of the original national routes established in 1926.  Significant portions of US 101 between the Los Angeles area and the San Francisco Bay Area follow El Camino Real, the historic road connecting the former Alta California's 21 missions.

Octavia Boulevard: Octavia Boulevard (designated as Octavia Street north of Hayes Street) is a major street in San Francisco, California that replaced the Hayes Valley portion of the damaged two-level Central Freeway.  Once a portion of Octavia Street alongside shadowy, fenced-off land beneath the elevated U.S. Route 101 roadway, Octavia Boulevard was redeveloped and redesigned upon the suggestion of Mark Jolles of San Francisco.

U.S. Route 26: U.S. Route 26 is an east–west United States highway.  It started in Ogallala, Nebraska, and gradually grew to reach the West Coast in Oregon.  When the U.S. highway system was first defined, it was limited to Nebraska and Wyoming; by the 1950s, it continued into Idaho and Oregon.  The highway's eastern terminus is in Ogallala, Nebraska at an intersection with Interstate 80.  Its western terminus is south of Seaside, Oregon at an intersection with U.S. Route 101.  Prior to 2004, the route's last 20 miles (32 km) were co-signed with U.S. Route 101 from the highways' junction south of Seaside north to Astoria where its intersection with U.S. Route 30 was also U.S. 30's western terminus.

Connecticut Route 101: Route 101 is a state highway in northeastern Connecticut running from Pomfret to the Rhode Island state line in Killingly.  The road originated as a 19th-century toll road known as the Connecticut and Rhode Island Turnpike.  Route 101 was designated along the modern alignment in 1935 when an earlier Route 101 was renumbered to U.S. Route 44.

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.  The famous one-block section, claimed as "the crookedest street in the world", is located along the eastern segment in the Russian Hill neighborhood.  The street was named after Lombard Street in Philadelphia by San Francisco surveyor Jasper O'Farrell.

Interstate 380 (California): Interstate 380 (I-380) is a short 1.7-mile (2.7 km) east–west spur Interstate Highway in the San Francisco Bay Area of Northern California, connecting Interstate 280 in San Bruno to U.S. Route 101 near the San Francisco International Airport (SFO).  The highway primarily consists of only three intersections: I-280, El Camino Real (State Route 82), and U.S. 101.  Like nearby I-280, I-380 never connects to Interstate 80, its parent Interstate Highway.  However, there is no rule that says that spur routes need to.  (Similarly, the spur route Interstate 795 branches off from Interstate 695, a beltway around Baltimore, and is only indirectly linked to Interstate 95.)

Golden Gate Bridge: The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the 1 mi strait connecting San Francisco Bay and the Pacific Ocean.  The structure links the American city of San Francisco, California – the northern tip of the San Francisco Peninsula – to Marin County, carrying both U.S. Route 101 and California State Route 1 across the strait.  The bridge is one of the most internationally recognized symbols of San Francisco, California, and the United States.  It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers.

California State Route 283: State Route 283 (SR 283) is a state highway in the U.S. state of California.  Unsigned along its entire length, SR 283 runs from U.S. Route 101 south of Rio Dell to the center of the city and back to U.S. Route 101.  The route was defined in 1970 as a transfer from a realigned Route 101.

Supporting paragraphs: Lombard Street (San Francisco) U.S. Route 101 in California
Answer: Lombard Street