|
State Route 180 is a state highway in California, United States, which runs through the heart of the San Joaquin Valley from Mendota through Fresno to Kings Canyon National Park, with an unbuilt segment defined west to Paicines. Nearly the entire stretch from the Kings River crossing to Cedar Grove is eligible for the State Scenic Highway System, and nearly the entire route from Paicines to Cedar Grove is part of the California Freeway and Expressway System. Two short segments travel through national parks, so are not state maintained and are the exceptions to the above: a segment through the General Grant Grove section of Kings Canyon National Park, and the far eastern end of the road inside of Kings Canyon National Park. The freeway through Fresno has the distinction of having the most heavily traveled section of road in the San Joaquin Valley. Major plans include an extension west to Interstate 5. ==Route description== The actual western terminus of SR 180 is at SR 33 in Mendota, with an unconstructed portion defined west across Interstate 5 to SR 25 in Paicines, currently signed as County Route J1. (See Future) In Mendota, the route is carried on Oller Street and San Benito Avenue, then travels along Whitesbridge Avenue through Kerman to Fresno. Through Fresno, from Brawley Avenue to DeWolf Avenue, it is a 4-to-10-lane freeway intersecting SR 99 in a 2-level stack, SR 41 in a 4-level stack, and the southern terminus of SR 168; officially, CalTrans considers the freeway SR 180S (supplemental) until the old highway on downtown surface streets is relinquished.〔California Department of Transportation, (All Traffic Volumes on CSHS ), 2005 and 2006〕 East of Fresno, the freeway links up with the original routing on Kings Canyon Blvd, and continues north of Sanger, through Centerville, Minkler and Fresno's Squaw Valley, before arriving at the entrance to Sierra National Forest near Dunlap. It follows the Kings River into General Grant Grove, where SR 198 splits off south toward Sequoia National Park. SR 180 turns north, passing through Wilsonia, leaving General Grant Grove, then turns east as it nears the South Fork of the Kings River near Hume, passes through Cedar Grove, and terminates in Kanawyers at the entrance of the Kings Canyon National Park. The entire portion beyond Hume Road is closed during winters, usually after the first snowfall.〔(Sequoia and Kings Canyon National Parks Travel Page )〕 The majority of SR 180, from SR 25 to the entrance of General Grant Grove, is part of the California Freeway and Expressway System,〔(CA Codes (shc:250-257) )〕 but only the piece in Fresno has actually been constructed to freeway standards. A length east of unbuilt State Route 65 near Minkler to the boundary of Kings Canyon, excepting the portion through General Grant Grove, is eligible for the State Scenic Highway System;〔(Eligible (E) And Officially Designated (OD) Routes, 161-680 ), CalTrans〕 the road inside of General Grant Grove and Kings Canyon is a Forest Service Byway. The old route east of SR 99 to the General Grant Grove is part of the National Highway System.〔(The National Highway System, Southern California, map of Fresno )〕 The old routing of SR 180 through downtown Fresno remains on the books, but is no longer signed and not considered a business route. The road no longer connects with its freeway bypass at all; the east and west ends terminate in cul-de-sacs. Local agencies are now generally forced to maintain or improve the road.〔(Fresno Redevelopment Agency 08/09 Budget )〕 SR 180 handles a wide range of traffic volumes, from a low of 5,000 per day near Kerman, to over 160,000 at the highly congested SR 168 interchange, the most-traveled highway segment in the San Joaquin Valley.〔 A study into the use of Measure C funds found that traffic volumes will likely increase between 50% and 100% across the entire road by 2020, especially in the more rural areas.〔(Fresno County General Plan, 1999 )〕 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 180」の詳細全文を読む スポンサード リンク
|