Special routes of U.S. Route 71
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A total of ten special routes of U.S. Route 71 exist, and another ten previously existed.
US 71B in Waldron
US 71B joins US 412 northbound at Robinson Avenue in Springdale.
Former Alternate US 71 near Carthage, Missouri. This section is now a frontage road ("outer road" in Missouri) of US 71.
Interstate 49
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Interstate 49 (I-49) is a north–south Interstate Highway that exists in multiple segments: the original portion entirely within the state of Louisiana with an additional signed portion extending from I-220 in Shreveport to the Arkansas state line, three newer sections in Arkansas, and a new section that opened in Missouri. Its southern terminus is in Lafayette, Louisiana, at I-10 while its northern terminus is in Kansas City, Missouri, at I-435 and I-470. Portions of the remaining roadway in Louisiana, Arkansas, and Texas, which will link Kansas City with New Orleans, are in various stages of planning or construction.
I-49 near Chopin, Louisiana (2009)
I-49 rises into the Ozark Mountains south of Fayetteville.
Ghost ramp at the northern end of the Bella Vista Bypass in 2011; the bypass was built and opened on October 1, 2021.
I-49 milepost marker south of Carthage, Missouri, temporarily turned so as not to be visible to traffic in April 2012.