K-232 is a 17.263-mile-long (27.782 km) north–south state highway in central Kansas connecting the towns of Wilson and Lucas. The highway was first established in 1962 and expanded over the following two years. K-232 is designated by the Kansas Department of Transportation as the Post Rock Scenic Byway. The scenic byway derives its name from the abundant limestone in the area which early settlers used as fence posts and in other construction in place of wood. The route was designated as a scenic byway both for the natural beauty of the area and unique towns located each end of the highway. Annual average daily traffic on the highway ranges from 238 to 340, and the entire route is paved with partial design bituminous pavement.