Route 171
Maintained by MoDOT
Length:	26 mi (42 km)
North end:	Kansas state line
South end:	Carthage
Major cities:	Asbury Carl Junction Airport Drive Webb City Carterville Carthage
Missouri Highways Supplemental - Decommissioned

Route 171 is a short highway in western Missouri. Its norther terminus is at the Kansas state line where it continues as K-171 near Opolis, Kansas. Its southern terminus is at the junction of U.S. Highway 71 and Route 571 in Carthage. The last ten southbound miles are multiplexed with Business US 71. Image File history File links No higher resolution available. ... Missouri Department of Transportation (also refered to as MoDot) is in charge of maintaining public roadways of Missouri. ... A mile is a unit of length, usually used to measure distance, in a number of different systems, including Imperial units, United States customary units and Norwegian/Swedish mil. ... km redirects here. ... Official language(s) none Capital Topeka Largest city Wichita Area  Ranked 15th  - Total 82,277 sq mi (213,096 km²)  - Width 211 miles (340 km)  - Length 417 miles (645 km)  - % water 0. ... Carthage is a city located in Jasper County, Missouri. ... Asbury is a city located in Jasper County, Missouri. ... Carl Junction is a city in Jasper County, Missouri, United States. ... Airport Drive is a village located in Jasper County, Missouri. ... Webb City is a city located in Jasper County, Missouri. ... Carterville is a city located in Jasper County, Missouri. ... Carthage is a city located in Jasper County, Missouri. ... State highways in Missouri were first designated in 1922 and Missouris system was used (along with Wisconsins) as a plan for the entire U.S. Highway System which was created in 1926. ... Missouri Supplental Routes are officially designated as State Secondary Roads. They are roads within the state of Missouri designated with letters. ... Official language(s) English Capital Jefferson City Largest city Kansas City Area  Ranked 21st  - Total 69,709 sq mi (180,693 km²)  - Width 240 miles (385 km)  - Length 300 miles (480 km)  - % water 1. ... Official language(s) none Capital Topeka Largest city Wichita Area  Ranked 15th  - Total 82,277 sq mi (213,096 km²)  - Width 211 miles (340 km)  - Length 417 miles (645 km)  - % water 0. ... United States Highway 71 is a north-south United States highway. ... Carthage is a city located in Jasper County, Missouri. ... A multiplex or concurrency on a road network occurs where a single physical road carries two or more different highway, motorway or other road numbers. ... Business US Highway 71 is an alternate alignment of U.S. Highway 71 which begins at a juntion of U.S. Highway 71, Missouri State Highway 96, Missouri State Highway 171, and Missouri State Highway 571 in Carthage, Missouri. ...

Some (about half) of those last 10 miles to Carthage, from its junction with 71 Business at Madison Ave. in Webb City, are routed in a northeasterly direction. This results in going northeast on "South" 171 and vice-versa along this stretch. However, 71 Business is going more or less in its designated direction, north, in a "wrong-way multiplex" at the same time. Webb City is a city located in Jasper County, Missouri. ... A wrong-way concurrency between Interstates 77 and 81, and U.S. Route 52 in southwestern Virginia A wrong-way concurrency or wrong-way multiplex is a road concurrency in which at least two numbered highway routes are signed in opposite, conflicting directions on the same stretch of physical roadway. ...

Also, because of this curve back to the northeast, Route 171 and Route 96 intersect each other on opposite sides of the Joplin/Webb City area. Going "southbound," 96 and 171 meet each other about two miles north of Carl Junction and then again about two miles west of Carthage. Route 96 maintains a straight east-west routing between these two points except at the very east end before the intersection with 171 and 71 Business. Route 96 is a state highway running between Interstate 44 at Halltown and Route 171 near Carl Junction. ...

At Carthage, 171 meets its "parent" route, U.S. 71. 171's "southern" terminus and 71 Business' northern terminus are here while the northern terminus of Route 571 approaches from the east. Route 96 continues though this interchange. This results in four x71's meeting in the same location.

Missouri 171 was once Route 57. That was changed when I-57 was established on the eastern side of the state. Kansas did not change K-57's number to match until 2004, when it became K-171 after it was decided to shorten K-57 because it had numerous multiplexes along its routing.