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|direction_b=North |terminus_b= at the Arkansas state line |previous_type=LA |previous_route=48 |next_type=LA |next_route=49 }} Interstate 49 (I-49) is an Interstate Highway that spans a total of in a north–south direction in the U.S. state of Louisiana. It runs from I-10 in Lafayette to the Arkansas state line north of Shreveport, largely paralleling the older US 71 corridor, and connects the state's two east–west interstates at two of its metropolitan centers. Along the way, it serves the cities of Opelousas, Alexandria, and Natchitoches, intersecting several cross-state highways, such as US 190, US 167, US 165, US 84, and I-20. of the route is still under construction between I-220 and LA 1 on the northwest side of Shreveport,〔 necessitating a detour via I-220 and US 71/LA 1. The project is scheduled for completion in the summer or fall of 2017.〔 I-49 was an intrastate Interstate Highway until December 12, 2012, when the designation was officially approved for an upgraded portion of US 71 in Missouri running from Joplin north to Kansas City. Portions of the remaining roadway between Shreveport and Joplin are in various stages of planning or construction, as well as a southern extension of the route from Lafayette to New Orleans along the US 90 corridor. ==Route description== I-49 begins its journey in Lafayette concurrent with U.S. Route 167 from I-10 to Opelousas at Exit 23. At Lafayette, motorists continuing southbound see the interstate highway change to U.S. 90 (Evangeline Thruway), a major thoroughfare taking travelers towards the heart of Lafayette. North of Lafayette, motorists on I-49 will parallel the ancient Mississippi river bed north of Carencro, and through Grand Coteau, just south of Opelousas. After leaving Opelousas, I-49 traverses the relatively flat, fertile farmlands until reaching Alexandria. From there, the highway roughly follows the Red River and Louisiana 1, bypassing the historic city of Natchitoches to the west on its way to Shreveport. At Shreveport, the highway parallels a railroad line just to the west until its terminus at I-20 southwest of downtown. The heaviest traffic on I-49 occurs within the cities of Shreveport and Opelousas. The stretch of freeway in Shreveport sees an average of 70,000 vehicles per day, while the stretch of freeway between Lafayette and Carencro sees an average of 55,000 vehicles per day, and the stretch of freeway through Opelousas sees an average of 45,000 vehicles per day between the Judson Walsh Drive and Creswell Lane exits. 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 49 in Louisiana」の詳細全文を読む スポンサード リンク
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