List of Kentucky supplemental roads and rural secondary highways (500–599)

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 (KY 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 (KY 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 (KY 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 (KY 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 (KY 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 (KY 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 (KY 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 (Moss Road) 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 (Allegre Road). The highway continues along Highland Lick Road, which crosses the Pond River and intersects KY 181 (Greenville Road) 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 (Sharon Grove Road) and KY 178, which takes over the course of Highland Lick Road. Major intersections ==Kentucky Route 508==

Kentucky Route 508 (KY 508) is a rural secondary highway in eastern Christian County and western Todd County. The highway begins at KY 507 east of Hopkinsville. KY 507 heads west along Butler Road and northeast along Pilot Rock Road; KY 508 heads southeast along Butler Road, which veers east at its junction with KY 1716 (Overby Lane). The highway crosses the South Fork of the Little River just west of its junction with KY 1843 (Vaughns Grove Fairview Road). KY 508 passes through Honey Grove before crossing the Christian–Todd county line. The highway follows Butler Road through Britmart to Tabernacle. From there, KY 508 follows Liberty–Britmart Road to its east end at Liberty. Major intersections ==Kentucky Route 509==

Kentucky Route 509 (KY 509) is a rural secondary highway in northwestern Nelson County. The highway begins at KY 245 (New Shepherdsville Road) south of Samuels. KY 509 heads north along Samuels Loop to Samuels, where the route meets the eastern end of KY 3207, also part of Samuels Loop, and has a grade crossing of an R.J. Corman Railroad Group rail line where it turns east onto Samuels Road. KY 509 heads northeast along Samuels Creek to its mouth at Froman Creek and crosses the latter creek, where the route continues east to Coxs Creek. There, the highway meets the southern end of KY 2739 (Lenore Road) and intersects US 31E and US 150 (Louisville Road). KY 509 continues east as Fairfield Road, which crosses Cox Creek and reaches its eastern terminus at KY 48 (Highgrove Road) west of the city of Fairfield. Major intersections ==Kentucky Route 510==

Kentucky Route 510 (KY 510) is a state highway that runs from Kentucky Route 221 at Pine Mountain to Kentucky Route 463 north of Gordon via Gilley. Major intersections ==Kentucky Route 511==

Kentucky Route 511 (KY 511) is a state highway that runs from U.S. Route 25W east of Youngs Creek to Kentucky Route 26 and Youngs Lane at Rockholds via Walden. Major intersections ==Kentucky Route 512==

Kentucky Route 512 (KY 512) is a state highway that runs from Kentucky Route 395 at Birdie to U.S. Route 127 east of Alton via Alton Station and Alton. Major intersections ==Kentucky Route 513==

Kentucky Route 513 (KY 513) is a state highway that runs from U.S. Route 62 at Fox Creek to Harry Wise Road and Gilberts Creek Road east of McBrayer via McBrayer. Major intersections ==Kentucky Route 514==

Kentucky Route 514 (KY 514) is a state highway in Caldwell County that runs from Ferguson Road at the Caldwell-Lyon County line west of Hopson to Kentucky Routes 126 and 128 northwest of Cobb via Hopson. Major intersections ==Kentucky Route 515==

Kentucky Route 515 (KY 515) is a state highway in Caldwell County that runs from Kentucky Route 903 to Kentucky Route 139 south-southeast of Princeton. ==Kentucky Route 516==

Kentucky Route 516 (KY 516) is a state highway in Bell County. ==Kentucky Route 517==

Kentucky Route 517 (KY 517) is a state highway in Allen County that runs from Kentucky Route 252 to Bailey Point Road and Hix Road northeast of Cedar Springs along the shore of Barren River Lake. ==Kentucky Route 518==

Kentucky Route 518 (KY 518) was a state highway in Lincoln County. It ran from KY 78 in Hustonville via Mt. Salem Road to KY 198 in Mt. Salem. The highway was decommissioned on October 22, 2001, and the road (along with intersecting KY 1562) was given to Lincoln County. ==Kentucky Route 520==

Kentucky Route 520 (KY 520) is a state highway in Henderson County that runs from Kentucky Route 136 southeast of Anthoston to Kentucky Route 416 and Upper Delaware Road at Coraville. ==Kentucky Route 521==