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California State Route 47
State Route 47 (SR 47) is a state highway in the U.S. state of California, connecting Terminal Island to the mainland in the Los Angeles area. From its south end at I-110 in San Pedro, it heads east across the Vincent Thomas Bridge to the island and the end of state maintenance. The state highway begins again at the junction with I-710 on Terminal Island, crossing the Schuyler Heim Bridge north to the mainland and the second terminus, where SR 103 begins. Signage continues along a locally maintained route, mainly Alameda Street, to the Gardena Freeway (SR 91) in Compton, and an unconstructed alignment follows the same corridor to the Santa Monica Freeway (I-10) near downtown Los Angeles.
The entire route is part of the California Freeway and Expressway System, and both constructed segments are freeways, officially known as parts of the Seaside Freeway (which continues to SR 1 via I-710〔: "That the California Highway Commission is requested to declare the added portion of Route 167 which will connect the Harbor Freeway and the Long Beach Freeway to be a freeway, to be known as the Seaside Freeway..."〕) and Terminal Island Freeway (which continues to SR 1 via SR 103).〔California Department of Transportation, (Named Freeways, Highways, Structures and Other Appurtenances in California ), 2006〕 However, there are several at-grade intersections along the gap on Terminal Island, and Alameda Street is a surface roadway, albeit one with few intersections, as it runs alongside the Alameda Corridor rail line.
==Route description==
State Route 47 begins at the south end of the Harbor Freeway (I-110) in the Los Angeles neighborhood of San Pedro and heads east to the Vincent Thomas Bridge, with only one interchange - at Harbor Boulevard - before the 1963 suspension bridge over the main channel of Los Angeles Harbor. After coming back to ground level on Terminal Island, SR 47 becomes the locally-maintained Seaside Avenue at the interchange with Ferry Street, where there was a toll plaza until 2000. The freeway ends just beyond at Navy Way, after which the road enters Long Beach and becomes Ocean Boulevard, which was rebuilt as a freeway in 2007. However, SR 47 must exit the freeway onto its frontage roads, intersecting Henry Ford Avenue before turning north onto the Terminal Island Freeway. Ocean Boulevard leads east over the Gerald Desmond Bridge and becomes Interstate 710, with access to downtown Long Beach.〔Google Maps street maps and USGS topographic maps, accessed January 2008 via (ACME Mapper ) and (TopoZone )〕
State maintenance begins again on the Terminal Island Freeway, which is also signed as State Route 103.〔Photographs of SR 47 northbound, taken May 30, 2004, from (California @ AARoads - California 47 )〕 After a partial interchange with New Dock Street, only allowing access to and from the north, SR 47 crosses the Cerritos Channel on the Schuyler Heim Bridge, a lift bridge opened in 1948. Just beyond the bridge, SR 47 leaves the freeway, which continues northeast as SR 103, onto Henry Ford Avenue, and state maintenance ends. The remainder of what is signed as SR 47,〔 along Henry Ford Avenue and Alameda Street to the Redondo Beach Freeway (SR 91), is locally maintained. Henry Ford Avenue quickly crosses the Dominguez Channel and Anaheim Street, and merges with Alameda Street, which continues southwest into Wilmington as a local street.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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