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Interstate 280 (I-280) is a 57-mile (92-km) long north–south Interstate Highway in the San Francisco Bay Area of Northern California. It connects San Jose and San Francisco, running along just to the west of the larger cities of San Francisco Peninsula for most of its route. I-280 from its southern terminus at U.S. 101 and Interstate 680 north to Interstate 880 in San Jose is part of the Sinclair Freeway. From I-880 to State Route 1 in Daly City, I-280 was built and dedicated as the ''Junipero Serra Freeway'', after the Spanish Franciscan friar who founded the first nine of 21 Spanish missions in California from San Diego to San Francisco. One of the dedication signs (in Daly City) still indicates that the Junipero Serra Freeway is known as the ''World's Most Beautiful Freeway'' due to its scenic route through the San Francisco Peninsula. From State Route 1 to the James Lick Freeway in San Francisco is officially called the John F Foran Freeway (after a former member of the California State Legislature), but is more commonly referred to by its original name, the Southern Freeway. And from the James Lick Freeway to its northern end at King Street and Fifth Street, I-280 is called the Southern-Embarcadero Freeway. This route is part of the California Freeway and Expressway System and is eligible for the State Scenic Highway System. I-280 is one of two 3-digit Interstate designations to appear on opposite coasts of the United States. I-110 in California and Florida is the only other designation. In more recent years, Interstate 280 has become well-known due to it being shown prominently on the app icon for iOS built-in Google Maps app (and later Apple Maps); I-280 runs through Cupertino, just over the fence north of Apple's headquarters. ==Route description== The southern end of Interstate 280 begins at U.S. Route 101 in San Jose, where it acts as a continuation of Interstate 680 westward. In between San Jose and San Francisco, Interstate 280 passes through Santa Clara, Cupertino, Los Altos and Los Altos Hills before it settles along its scenic route just to the west of the cities of the San Francisco Peninsula in San Mateo County and just to the east of the Santa Cruz Mountains. I-280 re-emerges in a decidedly urbanized area in the city of San Bruno, passing through South San Francisco and Daly City before it runs across a southeastern swath of the city of San Francisco on the way to its northern terminus. The segment of the Junipero Serra Freeway between Cupertino and Daly City has been called the "World's Most Beautiful Freeway" since its dedication in the 1960s. Drivers along this portion of Interstate 280 are treated to scenic views of the Santa Cruz Mountains to the west and, at a few points, San Francisco Bay to the east, and are isolated by hills from the cities to the east. Through much of this segment, the freeway is actually running just inside the eastern rim of the rift valley of the San Andreas Fault. A particularly attractive 6-mile (10 km) stretch of the freeway from Hillsborough to Belmont provides a beautiful look at Crystal Springs Reservoir, formed by water piped over 160 miles (260 km) from Hetch Hetchy Valley in Yosemite National Park, partly filling the rift valley. For nearly all of its length, Interstate 280 runs roughly parallel and several miles to the west of U.S. Route 101 (the Bayshore Freeway). Both freeways are north–south routes connecting San Jose with San Francisco; however, unlike I-280, the route that U.S. Route 101 takes between the two cities goes entirely through urbanized areas. The majority of the population of the San Francisco Peninsula lives somewhere between Interstate 280 and U.S. Route 101. I-280 never intersects with Interstate 80, its parent interstate. The northern terminus of I-280 is within about a mile of I-80's western terminus (at the approach to the San Francisco – Oakland Bay Bridge), but the two interstates do not directly connect. Although San Francisco has had several opportunities to connect I-280 to I-80, it has chosen to use the money for other purposes. Connecting the two freeways is considered to be politically and financially infeasible at this time, due to the city's strong anti-freeway stance. Instead, 280's northernmost extension primarily functions as a spur into Downtown San Francisco, as suggested by signage on northbound U.S. Route 101 at its San Francisco interchange with 280 ''(see history section below)''. Most of Interstate 280, from San Jose to Daly City, is designated as the Junipero Serra Freeway in honor of Spanish missionary Junípero Serra, who founded many of California's missions in the 18th century. A 26-foot (8 m) high ''faux''-sandstone statue of Father Serra kneeling and pointing over the freeway is located at a highway rest area just north of the Highway 92 intersection between the Bunker Hill Drive and Black Mountain Road exits on northbound I-280 in Hillsborough, and can be clearly seen by drivers in both directions. The segment of Interstate 280 north of SR 1 in San Francisco was originally named the Southern Freeway, but has since recently been officially renamed the John F. Foran Freeway after John Foran, a former California State Senator and Assembly member who served on the California Transportation Commission. The section of I-280 between the James Lick Freeway and its end at 6th St. and King Street is called the Southern-Embarcadero Freeway. Major intersections include U.S. Route 101 and SR 1 in San Francisco, Interstate 380 in San Bruno, and Interstate 880 and 680 and U.S. Route 101 in San Jose. The Junipero Serra Freeway is Route 280 from SR 1 in San Francisco to SR 17, as named by Assembly Concurrent Resolution 140, Chapter 208 in 1967. 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「Interstate 280 (California)」の詳細全文を読む スポンサード リンク
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