K-9 is a 317.937-mile-long (511.670 km) state highway in the U.S. state of Kansas. The highway goes east–west through Kansas. It has its western terminus south of Dresden at an intersection with K-123 and an eastern terminus at its junction with U.S. Route 73 near Lancaster. K-9 is the second longest state highway after K-4.
K-9 as it passes through Waterville with U.S. 77
K-9 and US 77 south of Marysville
U.S. Route 73 is a north–south United States highway that runs for 113 miles (182 km) from northeast Kansas to southeast Nebraska. The highway's southern terminus is Bonner Springs, Kansas at I-70. Its northern terminus is near Dawson, Nebraska at US 75.
US-73's former southern terminus at I-435 in Kansas City in 2007.