US 71 enters Missouri in Jane coming from Arkansas. Currently, a new bypass is being built known as the Bella Vista Bypass, to go around Jane and Bella Vista, Arkansas to connect with the freeway section of US 71 near Pineville. At this point, Interstate 49 begins its concurrency with US 71. I-49 and US 71 pass through many smaller communities before reaching Joplin. In Joplin, I-49 and US 71 interchanges with Interstate 44 and begin a short concurrency from I-44 exits 11 through 18. A few miles east of Joplin, I-49 and US 71 leave I-44 and heads north and enters Carthage. Due to the freeway being built, old sections of the highway have been bypassed and become county roads. I-49 and US 71 pass through Nevada and other communities before reaching the Kansas City area. In south Kansas City, at Bannister Road just north of the Grandview Triangle, US 71 ends its concurrency with I-49, and continues into downtown Kansas City as Bruce R. Watkins Memorial Drive. US 71 loses its freeway status for 3 blocks in Kansas City before becoming a freeway again and entering Downtown Kansas City. It is very unlikely that the freeway will continue all the way through, as a court order prevents the stoplights to be bypassed, even though MoDot has the necessary right of way to do so. In northern Kansas City, US 71 shares many overlaps with interstates, including I-70, I-35, and I-29. US 71 runs with I-29 through Kansas City north of Downtown until St. Joseph. Once in St. Joseph, US 71 leaves I-29. US 71 runs north to Maryville. US 71 serves the small community of Clearmont before running through countryside into Iowa.
History
The future of part of the Bella Vista Bypass is on hold. On August 5, 2014, voters in Missouri defeated Amendment 7 at the polls, which would have provided funding various road construction projects in the state. After the measure's defeat, the funding for the connection from the existing southern end of I-49 in Missouri along the Bella Vista Bypass to the state line is in doubt, but Arkansas is moving ahead to construct all but the last connection to the state line.
Future
In March 2019, the Missouri Highways and Transportation Commission approved the remaining funding needed to complete the Bella Vista Bypass. Contracts will be let in 2020 and Missouri's portion of I-49 should be completed in the summer of 2022.
