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|length_notes=(broken into 5 pieces by U.S. Route 101) |tourist= Route One, Big Sur Coast Highway and Route One, San Luis Obispo North Coast Byway |established=1934 |direction_a=South |terminus_a= in Dana Point |junction= |direction_b=North |terminus_b= near Leggett |previous_type=I |previous_route=980 |next_type=SR |next_route=2 }} State Route 1 (SR 1) is a major north-south state highway that runs along most of the Pacific coastline of the U.S. state of California. Highway 1 has several portions designated as either Pacific Coast Highway (PCH), Cabrillo Highway, Shoreline Highway, or Coast Highway. Its southern terminus is at Interstate 5 (I-5) near Dana Point in Orange County and its northern terminus is at U.S. Highway 101 (US 101) near Leggett in Mendocino County. Highway 1 also at times runs concurrently with US 101, most notably through a stretch in Ventura and Santa Barbara counties, and across the Golden Gate Bridge. The highway is famous for running along some of the most beautiful coastlines in the USA, leading to its designation as an All-American Road. In addition to providing a scenic route to numerous attractions along the coast, the route also serves as a major thoroughfare in the Greater Los Angeles Area, the San Francisco Bay Area, and several other coastal urban areas. SR 1 was built piecemeal in various stages, with the first section opening in the Big Sur region in the 1930s. However, portions of the route had several names and numbers over the years as more segments opened. It was not until the 1964 state highway renumbering that the entire route was officially designated as Highway 1. Although SR 1 is a popular route for its scenic beauty, frequent landslides and erosion along the coast have caused several segments to be either closed for lengthy periods for repairs, or re-routed further inland. ==Route description== Highway 1 is part of the California Freeway and Expressway System and is eligible for the State Scenic Highway System. However, only a few stretches between Los Angeles and San Francisco have officially been designated as a scenic highway. The Big Sur section from San Luis Obispo to Carmel is an official National Scenic Byway. The entire route is designated as a Blue Star Memorial Highway to recognize those in the United States armed forces. In Southern California, the California Legislature has designated the segment between Interstate 5 (I-5) in Dana Point and US 101 near Oxnard as the Pacific Coast Highway (commonly referred to as "PCH"). Between U.S. 101 at the Las Cruces junction (8 miles south of Buellton) and U.S. 101 in Pismo Beach, and between U.S. 101 in San Luis Obispo and Interstate 280 in San Francisco, the legislature has designated State Highway 1 as the Cabrillo Highway, after the Portuguese explorer Juan Rodríguez Cabrillo. The legislature has also designated the route as the Shoreline Highway between the Manzanita Junction near Marin City and Leggett. Smaller segments of the highway have been assigned several other names by the state and municipal governments. The legislature has also relinquished state control of segments within Dana Point, Newport Beach, Santa Monica, and Oxnard; those segments are now maintained by those respective municipalities. In addition to connecting the coastal cities and communities along its path, Highway 1 provides access to beaches, parks, and other attractions along the coast, making it a popular route for tourists. The route annually helps bring several billion dollars to the state's tourism industry. The route runs right besides the coastline, or close to it, for the most part, and it turns several miles inland to avoid several federally controlled or protected areas such as Vandenberg Air Force Base, Diablo Canyon Power Plant and Point Reyes National Seashore. Segments of Highway 1 range from a rural two-lane road to an urban freeway. Because of the former, long distance thru traffic traveling between the coastal metropolitan areas are instead advised to use faster routes such as US 101 or I-5. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「California State Route 1」の詳細全文を読む スポンサード リンク
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