This is a relatively small set of only 300 routes, due to extensive decommissioning and renumbering over the years. Most are very short, with 2-4 waypoints.
All signed highways from KY2000-KY2499 have been added to the HB. The unused numbers are listed below.
Unsigned state routes:
2048, 2068, 2087, 2089, 2095, 2098
2103, 2106, 2118, 2135, 2138, 2145, 2161, 2162, 2172, 2179, 2182
2241, 2251, 2256, 2258, 2259, 2265, 2274, 2278, 2291, 2294, 2296, 2299
2300, 2301, 2308, 2309, 2311, 2312, 2317, 2319, 2323, 2324, 2327, 2329, 2332, 2333, 2344, 2348, 2352, 2354, 2372, 2374, 2378, 2379, 2382, 2390 (Laurel County), 2395
2401, 2402, 2413, 2419, 2420, 2428, 2429, 2431, 2448, 2454, 2455, 2459, 2460, 2461, 2462, 2471, 2476, 2479, 2480, 2481, 2483, 2486, 2487, 2488, 2490, 2492, 2494, 2495
Former state routes decommissioned by KYTC, per the SPRS listings here:
http://transportation.ky.gov/Planning/Pages/State-Primary-Road-System-Maps.aspx2060, 2072, 2085, 2086, 2088, 2092, 2093
2100, 2104, 2105, 2111, 2112, 2114, 2119, 2125, 2126, 2130, 2136, 2137, 2142, 2144, 2147, 2148, 2159, 2173, 2174, 2175, 2176, 2177, 2178, 2180, 2186, 2188, 2190, 2196, 2197
2200, 2203, 2210, 2211, 2214, 2218, 2219, 2220, 2221, 2223, 2229, 2231, 2233, 2235, 2236, 2242, 2244, 2246, 2252, 2254, 2255, 2257, 2264, 2279, 2285, 2286
2302, 2305, 2306, 2307, 2315, 2316, 2321, 2322, 2334, 2340, 2341, 2343, 2351, 2353, 2355, 2356, 2357, 2358, 2359, 2360, 2361, 2364, 2365, 2366, 2367, 2368, 2397
2400, 2403, 2404, 2405, 2407, 2412, 2434, 2445, 2449, 2451, 2456, 2457, 2458, 2463, 2464, 2465, 2470, 2473, 2474, 2475, 2477, 2478, 2482, 2484, 2485, 2493
I could find no evidence of the following routes existing now or in the past:
2129, 2215, 2410, 2416
In addition, KY2084 may or may not be signed. It is the new number for the former routing of US41 south of Henderson. Any information on signage would be appreciated.