K-18 is a 206-mile (332 km), west–east state highway in the U.S. State of Kansas. K-18's western terminus is at U.S. Route 24 (US-24) near Bogue and the eastern terminus is at K-99 south of Wamego. Portions of the highway have been upgraded to a freeway beginning in 2012.

Quick Facts Route information, Length ...

K-18
K-18 highlighted in red
Route information
Maintained by KDOT and the city of Manhattan
Length	205.999 mi (331.523 km)
Existed	1926[1]–present
Major junctions
West end	US-24 near Bogue
Major intersections	US-183 in Plainville US-281 from east of Paradise to Luray US-81 west of Bennington US-77 in Junction City I-70 / US-40 from Junction City to Grandview Plaza K-177 in Manhattan
East end	K-99 south of Wamego
Location
Country	United States
State	Kansas
Counties	Graham, Rooks, Osborne, Russell, Lincoln, Ottawa, Dickinson, Geary, Riley, Wabaunsee
Highway system
Kansas State Highway System Interstate US State Spurs
← K-17 → K-19
← K-28 → K-30

Close

K-18 from US-81 to the western boundary of Lincoln County has been designated "Medal of Honor Recipient Donald K. Ross Memorial Highway".^[2]

K-18 begins near the town of Bogue in Graham County as it branches off to the south from US-24. The highway then stairsteps to the southeast through the towns of Damar, Palco, Plainville, and Codell in Rooks County; Natoma in Osborne County; Paradise, Waldo, Luray, and Lucas in Russell County (K-18 is duplexed with US-281 for 9 miles (14 km) west of Luray); and Sylvan Grove, Lincoln, and Beverly in Lincoln County. As K-18 enters Ottawa County, it takes a due east bearing, traveling through Tescott and meeting US-81 north of Salina. The road briefly jogs to the north for around 2 miles (3.2 km) before turning east again to travel through Bennington and Talmage in Dickinson County and into Junction City in Geary County. In Junction City, K-18 meets US-77 and travels south along US-77 through the city until it hits I-70. K-18 then travels to the northeast along I-70 for eight miles (13 km) before exiting and continuing to the northeast toward Manhattan as a freeway. K-18 crosses the Kansas River at the Riley County line and travels through Ogden into Manhattan. Once traveling through Manhattan, K-18 again crosses the Kansas River and parallels the river to the south into Wabaunsee County before ending at K-99 south of Wamego.

The section of K-18 from just east of the interchange with K-113 to K-177 within Manhattan is maintained by the city.^[3]

K-18 was first designated as a state highway in 1926, and ran from US-40 (now US-24) to US-81 north of Salina.^[1] In 1936, it extended to US-77 in Junction City. In 1953, it extended to K-13. In 1960, it extended east over cancelled K-29 to K-99.

• List of state highways in Kansas