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|terminus_b= in Anthony |previous_type=NM |previous_route=79 |next_type=NM |next_route=80 |counties=Hidalgo, Grant, Luna, Doña Ana〔 }} U.S. Route 80 (US 80) was a major transcontinental highway which existed in the U.S. state of New Mexico from November 11, 1926 to October 12, 1991. Nationally, US 80 stretched from San Diego, California to Tybee Island, Georgia, going through southern New Mexico from El Paso, Texas, through the towns of Las Cruces, Deming and Lordsburg before entering Arizona. US 80 was a modest long (compared to US 80 in Arizona which was almost long) and was eventually replaced by Interstate 10, US 70 and child route US 180, leading to the complete removal of US 80 in New Mexico.〔〔 State Road 80 is a remnant of this route. ==History== Beginning in 1909, New Mexico started using a numbering system for its highways. The first of these was Route 1. Known as the El Camino Real, Route 1 ran from the Texas state line in Anthony north to the Colorado state line near Raton. Further to the west, Route 4 ran from the Arizona state line near Rodeo to a junction with Route 1 in Las Cruces. In 1920, the western end of Route 4 was truncated to Lordsburg. The route between Lordsburg and Rodeo was taken over by Route 42. In 1917, the Dixie Overland Highway was established from San Diego, California to Savannah, Georgia, extending through New Mexico. This auto trail entered New Mexico from the east through Texas, going through Roswell back into Texas to El Paso, before heading back into New Mexico through Las Cruces, Deming and Lordsburg before aiming southwest into Arizona towards Douglas. Between 1920 and 1923, the Dixie Overland was joined by the Bankhead and Old Spanish Trail highways west of El Paso. By 1925, the Joint Board on Interstate Highways under the Secretary of Agriculture and American Association of State Highway Officials (AASHO), proposed a numbered transcontinental highway system across the country.〔 This was approved by Congress on November 11, 1926.〔 All of Route 4, part of Route 42, the southernmost section of Route 1, most of the Dixie Overland Highway, Old Spanish Trail and Bankhead Highway within New Mexico became U.S. Route 80. Child route US 180 was established between US 80 in Arizona and US 85 in Caballo. US 80 and US 85 ran concurrent together south of Las Cruces into Texas.〔〔 The state highway system within New Mexico was renumbered and reworked extensively to accommodate the new U.S. Highway System by 1927 into well marked State Roads.〔 Changes to the routing of US 80 began in 1926. An older routing to Cambray via Aden from Mesilla Park was abandoned in favor of a route through Las Cruces. From 1934 to 1935, the route was slightly altered between Arizona and Road Forks, eliminating an exceptionally long curve over the railroad tracks in Rodeo for a more modest curve into town. The route between Cambray and Deming was also straightened out. US 80 was moved onto a newer road further south from the railroad tracks and straightened out between Road Forks and Deming. Later changes included the bypassing of the route through Cambray between Deming and Las Cruces and the older alignment from Gage to Deming. In the 1950s, a new section of US 80 was constructed around the older route between Anthony and Las Cruces, bypassing many of the towns along the Rio Grande. This older route was for a while marked as Alternate US 80.〔〔 Changes to the U.S. Highway system after 1926 somewhat affected US 80. Between 1932 and 1935, US 70 was realigned heavily due to the extension of US 60 into New Mexico. The re-routing made US 70 concurrent with US 80 between Lordsburg and Las Cruces and eliminated the original US 180. US 260 was established along part the earlier route of US 70 and NM 11 to US 80 in Deming.〔(【引用サイトリンク】 title=End of US highway 260 )〕〔 In 1944, US 180 was re-established heading west through part of New Mexico along US 62 to US 80 in El Paso. In 1961, US 180 was extended over US 80 from El Paso to Deming and replaced US 260. The establishment of the Interstate Highway system marked the beginning of the end of US 80.〔 By 1965, Interstate 10 had replaced large section sections of US 80.〔 Between 1964 and 1969, US 80 was removed entirely from California. Arizona followed by retiring most of its portion of US 80 on October 28, 1977. On October 6, 1989, the AASHTO approved Arizona and New Mexico's request to remove US 80 from Arizona and most of New Mexico. US 80 had its western terminus truncated to Anthony near the Texas border. In 1991, both New Mexico and Texas requested the removal of US 80 between Anthony and Dallas, citing US 80 as being un-needed, due to being consistently multiplexed with I-10, I-20 and I-30. On October 12, 1991, the AASHTO agreed to this proposal and truncated US 80 to its current western terminus at I-30 in Dallas, Texas.〔 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「U.S. Route 80 in New Mexico」の詳細全文を読む スポンサード リンク
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