Question: What roads is the dividing line for most of Kansas City metro area  south of the confluence of the river nicknamed the Kanza and the Missouri river?
Context: The Port of Kansas City is an inland port on the Missouri River in Kansas City, Missouri at river mile 367.1, near the confluence with the Kansas River.  Kansas City, the second-largest rail hub and third-largest trucking hub in the country, is on marine highway M-70, which extends as far as Pittsburgh and intersects M-55 at St. Louis, allowing shipping to New Orleans, Chicago, Minneapolis and connections to major cities all over the eastern United States.  The Missouri inland waterway allows for barge traffic as far upriver as Sioux City, Iowa; however, most of the commercial traffic on the Missouri is concentrated between Kansas City and St. Louis. The historic town of Rocky Point was on the south side of the Missouri River in Fergus County, Montana, in the Missouri Breaks.  Rocky Point was located at a natural ford on the Missouri River.  In prehistoric times, American bisons trailed down through the breaks to Rocky Point to cross the river.  During the Missouri River steamboat era (1860s to 1880s), the buffalo trail system leading to and from the ford caused Rocky Point to become a steamboat landing, which received freight for mining camps in the Judith Mountains (to the south) and in the Little Rocky Mountains (to the north) and also for Fort Maginnis built in 1880.  In the 1870s and 1880s, Rocky Point had a store, hotel, two saloons, a feed stable, a blacksmith shop and a ferry.  Due to its remote location in the Missouri Breaks, in the 1870s and 1880s Rocky Point became a refuge for outlaws who turned to rustling cattle and horses until rancher-vigilantes took punitive action in 1884.  From 1886 to 1936 it had a post office near by which was known as Wilder and so the community of Rocky Point was sometimes also called Wilder.  The community at the Rocky Point ford continued through the homesteading years from 1900 to 1918, but faded away when the ferry ceased to function in the 1920s, and it finally disappeared in 1936 when the Army Corps of Engineers condemned and bought up land adjacent to the Missouri River that might possibly be affected by Ft Peck Dam, then being built.  Today some historic but deteriorating structures still remain on the site, which is now on the Charles M. Russell National Wildlife Refuge operated by the U.S. Fish and Wildlife Service.  Being on public lands the Rocky Point ford area may be approached by "dirt" roads and visited, but the roads become impassable when wet. Kansas City Scout is one of the United States' largest electronic traffic management systems.  It was created in 2000 as part of a bi-state initiative between the Missouri Department of Transportation and the Kansas Department of Transportation to provide this system for the Kansas City Metropolitan Area, which is in both Missouri and Kansas (the anchor city of Kansas City is in Missouri).  The project's cost was $43 million.  Of that amount, the Federal Highway Administration (FHWA) contributed 80-90 percent of the project cost.  KDOT and MoDOT shared the remaining cost.  The system employs a system of electronic boards placed on major highways throughout the metropolitan area that display traffic information whenever information needs to be displayed (due to an accident, lane closure, highway closure etc.), and the system also has cameras on those billboards to automatically detect traffic problems.  While the system has extensive coverage of highways in the Kansas City Metropolitan Area it still has much more to cover.  Since it would be too expensive to cover all the major highways in the Kansas City metro (which has more miles of highway per person than any other metropolitan area in the United States), studies were conducted to determine which highways or segments of highways have priority due to higher accident rates.  Since the project's beginning, it has expanded greatly, and will continue to expand.  Future plans are to extend coverage to I-635 and cover I-435 even more (especially in the northern areas of the metro) as well as other major city highways.  It was named after the iconic Kansas City Scout Statue that exists in Penn Valley Park, overlooking Downtown Kansas City. Downtown Kansas City is the central business district (CBD) of Kansas City, Missouri and the Kansas City metropolitan area.  It is between the Missouri River in the north, to 31st Street in the south; and from the Kansas–Missouri state line east to Bruce R. Watkins Drive as defined by the Downtown Council of Kansas City; the 2010 Greater Downtown Area Plan formulated by the City of Kansas City defines the Greater Downtown Area to be the city limits of North Kansas City and Missouri to the north, the Kansas–Missouri state line to the west, 31st Street to the south and Woodland Avenue to the east.  However, the definition used by the Downtown Council is the most commonly accepted. The history of the Kansas City metropolitan area begins in the 19th century as Frenchmen from St. Louis, Missouri moved up the Missouri River to trap for furs and trade with the Native Americans.  The Kansas City metropolitan area, straddling the border between Missouri and Kansas at the confluence of the Kansas and Missouri Rivers, was a strategic point for commerce and security.  Kansas City, Missouri was founded in 1838 and defeated its rival Westport to become the predominant city west of St. Louis.  The area played a major role in the westward expansion of the United States.  The Santa Fe, and Oregon trails ran through the area.  In 1854, when Kansas was opened to Euro-American settlement, the Missouri-Kansas border became the first battlefield in the conflict in the American Civil War. Kansas City is the largest city in Missouri, United States, and the sixth largest city in the Midwest.  According to the U.S. Census Bureau, the city had an estimated population of 481,420 in 2016, making it the 37th largest city by population in the United States.  It is the anchor city of the Kansas City metropolitan area, which straddles the Kansas–Missouri border.  Kansas City was founded in the 1830s as a Missouri River port at its confluence with the Kansas River coming in from the west.  On June 1, 1850 the town of Kansas was incorporated; shortly after came the establishment of the Kansas Territory.  Confusion between the two ensued and the name Kansas City was assigned to distinguish them soon thereafter. The 2011 Missouri River floods was a flooding event on the Missouri River in the United States.  The flooding was triggered by record snowfall in the Rocky Mountains of Montana and Wyoming along with near-record spring rainfall in central and eastern Montana.  All six major dams along the Missouri River released record amounts of water to prevent overflow which led to flooding threatening several towns and cities along the river from Montana to Missouri; in particular Bismarck, North Dakota; Pierre, South Dakota; Dakota Dunes, South Dakota; South Sioux City, Nebraska, Sioux City, Iowa; Omaha, Nebraska; Council Bluffs, Iowa; Kansas City, Missouri; Jefferson City, Missouri, as well as putting many smaller towns at risk.  According to the National Weather Service, in the second half of the month of May 2011, almost a year's worth of rain fell over the upper Missouri River basin.  Extremely heavy rainfall in conjunction with an estimated 212 percent of normal snowpack in the Rocky Mountains contributed to this flooding event. The Kansas River (also known as the Kaw; via French "Cansez" from "kką:ze", the name of the Kaw (or Kansas) tribe) is a river in northeastern Kansas in the United States.  It is the southwestern-most part of the Missouri River drainage, which is in turn the northwestern-most portion of the extensive Mississippi River drainage.  Its name (and nickname) come from the Kanza (Kaw) people who once inhabited the area.  The state of Kansas was named for the river. State Line Road is a major north–south street in the Kansas City Metropolitan Area that runs along the Kansas–Missouri state line.  It runs 12.5 miles (20 km) from Chester Avenue in the north, crossing U.S. Highway 56 a couple of miles from the northern end and continuing south to the intersection of 135th St. in Kansas, Missouri Route 150 in the South.  It continues north as Eaton St. and continues south as Kenneth Rd., both in Kansas.  Its northernmost point is roughly 3/4 mile (1.25 km) south of Interstate 35.  It is the dividing line between Kansas and Missouri for most of the Kansas City metro area south of the confluence of the Kansas and Missouri rivers. Cities along the road include Kansas City, Missouri, Kansas City, Kansas, and several smaller communities in Kansas such as Leawood, Mission Hills, Prairie Village, and Westwood Hills. Neighborhoods in the City of Baltimore are officially divided into nine geographical regions: North, Northeast, East, Southeast, South, Southwest, West, Northwest, and Central, with each district patrolled by a respective Baltimore Police Department.  Interstate 83 and Charles Street down to Hanover Street and Ritchie Highway serve as the east-west dividing line and Eastern Avenue to Route 40 as the north-south dividing line.  However, Baltimore Street is north-south dividing line for the U.S. Postal Service.  It is not uncommon for locals to divide the city simply by East or West Baltimore, using Charles Street or I-83 as a dividing line, or into North and South using Baltimore Street as a dividing line.
Answer: State Line Road