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U.S. Route 101 (California)

U.S. Route 101 marker

U.S. Route 101
Map of California with US 101 highlighted in red
Route information
Defined by
Maintained by Caltrans
Length: 808.111 mi (1,300.529 km)
Portions of US 101 have been relinquished to or are otherwise maintained by local or other governments, and are not included in the length.
Existed: November 11, 1926 (1926-11-11) – present
Major junctions
South end: I-5 / I-10 / SR 60 in Los Angeles
 
North end: US 101 at Oregon state line
Highway system
SR 99 SR 103
Redwood Highway
Nearest city Klamath, California
Built 1900–1949
NRHP Reference # 79000253
Added to NRHP December 17, 1979

U.S. Route 101 marker

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.

Although the highway has been superseded in overall importance for transport through the state by Interstate 5 (I-5), US 101 continues to be the major coastal north–south route that links the Greater Los Angeles Area, the Central Coast, the San Francisco Bay Area, and the North Coast (Redwood Empire). 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. US 101 also has portions designated as the Santa Ana Freeway, Hollywood Freeway, Ventura Freeway, South Valley Freeway, and the Bayshore Freeway. The Redwood Highway, the 350-mile-long (560 km) northernmost segment of the highway, begins at the Golden Gate and passes through the world's tallest and only extensive preserves of virgin, old-growth coast redwood trees.


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