K-55 (Kansas highway)

K-55 is a 12.049-mile-long (19.391 km) west–east state highway in the U.S. state of Kansas. The highway's western terminus is at U.S. Route 81 (US-81) roughly 11 miles (18 km) north of Wellington and the eastern terminus is at K-15 in Udall. It passes through the city of Belle Plaine.

The road's westbound terminus is a triangle-type intersection. Just before the western terminus, the road passes under the Kansas Turnpike, although there is no intersection. Turnpike access is available at K-53 to the north and US-160 to the south near Wellington.

Before state highways were numbered in Kansas there were auto trails. K-55's western terminus closely follows the Meridian Highway and the South West Trail. It was first designated a state highway by 1927, and at that time ran from US-81 in Belle Plaine southeast to K-12 in Oxford. A year later, it had been realigned to travel east from US-81 to K-15 west of Udall. By 1945, a new alignment of K-15 had been completed, at which time K-55 was extended east to the new alignment. The entire length of K-55 was paved by 1948.