K-33 (Kansas highway)

K-33 is an approximately 10.4-mile-long (16.7 km) north–south state highway in the U.S. state of Kansas. K-33's southern terminus is at K-68 in rural Franklin County east of Ottawa and the northern terminus is at U.S. Route 56 (US-56) in Douglas County, east of Baldwin City and southwest of Kansas City. K-33 provides an important link between US-56 and K-68 to Interstate 35 (I-35) and US-50 in Wellsville. K-33 is a two-lane rural highway for most of its length, except for the section within Wellsville.

Before state highways were numbered in Kansas, there were auto trails. The majority of K-33's route closely follows the former New Santa Fe Trail, King of Trails and Ozark Trail. K-33 was first designated as a state highway in 1926. At this point the highway began near Waverly and ran northeastward to Ottawa, then east to the Missouri border. By the next year, K-33 had been realigned to turn north, just west of Ottawa, then passing through Wellsville to Edgerton. In 1934, the northern terminus of K-33 had been realigned to the west of Edgerton. Two years later, K-33's southern terminus had been truncated to Ottawa. In 1969, the overlap with K-68 had been eliminated and K-33 was truncated to its current southern terminus.