The highway runs 5.618 miles (9.041 km)[2] from K-14 east to Barnard in northern Lincoln County.

K-284 heads east from K-14 between Lincoln and Beloit, 2 miles (3.2 km) south of the Lincoln–Mitchell county line.

[3][5] The Kansas Department of Transportation measured an annual average daily traffic of 190 vehicles on K-284 in 2021.

[6] As of 1960, the direct link between K-14 and Barnard was a gravel road maintained by Lincoln County.

[11][12] The agency issued an updated resolution to construct the Barnard spur as part of the state highway system as K-284 on January 19, 1972.