List of Kentucky supplemental roads and rural secondary highways (500–599)
Kentucky supplemental roads and rural secondary highways are the lesser two of the four functional classes of highways constructed and maintained by the Kentucky Transportation Cabinet, the state-level agency that constructs and maintains highways in Kentucky. The agency splits its inventory of state highway mileage into four categories:
- The State Primary System includes Interstate Highways, Parkways, and other long-distance highways of statewide importance that connect the state's major cities, including much of the courses of Kentucky's U.S. Highways.
- The State Secondary System includes highways of regional importance that connect the state's smaller urban centers, including those county seats not served by the state primary system.
- The Rural Secondary System includes highways of local importance, such as farm-to-market roads and urban collectors.
- Supplemental Roads are the set of highways not in the first three systems, including frontage roads, bypassed portions of other state highways, and rural roads that only serve their immediate area.
Kentucky Route 500
Kentucky Route 500 is a rural secondary highway in western Daviess County. The highway begins at KY 56 at St. Joseph. KY 500 heads north toward Curdsville, meeting the west end of KY 456 south of the village. The highway enters the village along Main Street then passes through three right-angle turns before reaching a dead end at the confluence of Panther Creek with the Green River.Kentucky Route 501
Kentucky Route 501 is a state highway that runs from Kentucky Route 910 at Phil to U.S. Route 27 northeast of Kings Mountain via Kings Mountain.Major intersections
Kentucky Route 502
Kentucky Route 502 is a state highway in Hopkins County that runs from Kentucky Route 109 and Bone Road at Rabbit Ridge to Old Morganfield Road and Balls Hill Road north of Nebo via Nebo.Major intersections
Kentucky Route 503
Kentucky Route 503 is a state highway that runs from Kentucky Route 5 north of Princess to Kentucky Route 3105 and Industrial Road in Wurtland via Naples and Danleyton.Major intersections
Kentucky Route 504
Kentucky Route 504 is a state highway that runs from Kentucky Route 32 just east of Elliottville to Kentucky Route 7 at Green via Ault and Gimlet.Major intersections
Kentucky Route 505
Kentucky Route 505 is a rural secondary highway in eastern Ohio County. The highway extends from US 231 southeast of Cromwell north to KY 878 at Olaton via Oak Grove, Select, Baizetown, and Windy Hill. KY 505 begins at US 231 southeast of Cromwell. The highway heads northeast, bridges the West Prong of Indian Camp Creek, and crosses over the William H. Natcher Parkway. The highway gradually curves east as it crosses three branches of Indian Camp Creek and passes through Oak Grove and Select. At Baizetown, KY 505 meets the northern end of KY 1118 and turns north. The highway crosses the Western Kentucky Parkway on its way to Windy Hill, where the route meets the western end of KY 2713. KY 505 crosses over the Paducah and Louisville Railway shortly before its junction with US 62 east of Rosine. The two highway run concurrently east until KY 505 splits north near Horse Branch. KY 505 continues along Dan Road, which crosses Muddy Creek and a branch of Caney Creek before reaching its northern terminus at KY 878 at Olaton.Major intersections
Kentucky Route 506
Kentucky Route 506 is a state highway that runs from Kentucky Route 902 northeast of Enon to U.S. Route 60, Kentucky Route 91, and West Depot Street in downtown Marion via Piney Fork.Major intersections
Kentucky Route 507
Kentucky Route 507 is a rural secondary highway in eastern Christian County and northern Todd County. The highway extends from KY 107 in Hopkinsville east to KY 106 and KY 178 at Claymour via Allegre. KY 507 begins at a three-way intersection with KY 107 in the city of Hopkinsville. KY 107 heads west along East Seventh Street and northeast along Greenville Road, and KY 507 heads east along East Seventh Street. Further east, KY 507 splits northeast along Butler Road while KY 1979 continues along East Seventh Street to US 68 and KY 80. KY 507 heads northeast and meets the western end of KY 508, which continues on Butler Road while KY 507 continues on Pilot Rock Road. The route twice crosses Lower Branch of the North Fork of the Little River on its way to Pleasant Hill.KY 507 crosses the South Fork of the Little River before crossing the Christian–Todd county line. The highway continues east and meets the eastern end of KY 189 just west of the route's bridge across Buck Fork Creek. KY 507 crosses the Shelton Branch of the Pond River just west of Allegre, where the route intersects KY 171. The highway continues along Highland Lick Road, which crosses the Pond River and intersects KY 181 south of Cedar Grove. KY 507 continues southeast to Claymour, the site of the route's terminus at a four-way intersection with KY 106 and KY 178, which takes over the course of Highland Lick Road.