Route 9 is a highway in the Kansas City, Missouri area. Its northern terminus is at Interstate 29/U.S. Route 71 in Kansas City North; its southern terminus is at Interstate 35/Interstate 70/U.S. Route 24/U.S. Route 40 in downtown Kansas City. Even though both termini are in Kansas City, it passes through other towns and cities. It is carried across the Missouri River by the Heart of America Bridge between downtown Kansas City, Missouri and North Kansas City, MO.