any of the other routes in the series; instead, they serve to connect NY 97 in Callicoon to the Callicoon Bridge over the Delaware River. Route list Kauneonga Lake to Morsston (141–149) The Kauneonga Lake–Morsston series comprises routes 141 through 149. The primary road between the two locations comprises CR 141, CR 143, CR 145, and CR 146, while CR 142 and CR 144 are spurs leading away from the main route. CR 149 is completely isolated from the rest of the series, running from NY 52 in the town of Callicoon to CR 178 at Livingston Manor over what was once NY 284. Route list Routes 151–158 Unlike most numerical groupings in Sullivan County, the county routes numbered 151 through 158 do not form a continuous roadway, save for CR 151 and CR 152. However, the routes are all spurs connecting the rest of the route system to the Ulster County line. Route list Routes 161–168 Like the 150 series, the county routes numbered from 161 to 168 (161–164, 166, 166A, and 168 in actuality) do not form a series. However, in this case, most of them are not related. Route list Roscoe to Bloomingburg (171–179) The Roscoe to Bloomingburg series is made up of county routes 171 through 176, 178, and 179, plus three spur routes. All eight mainline routes are mostly continuous and collectively extend from the Delaware County line northwest of Roscoe to the Bloomingburg village line just west of the Orange County line. In between, the route serves Liberty, Monticello, and Wurtsboro via locally maintained highways as the county designations end at the village limits. The series parallels the NY 17 expressway for its entire length and also runs along the southern boundary of Catskill Park from Livingston Manor to the Delaware County line. Most of the eight mainline routes and CR 179A were originally designated as part of NY 17 in 1924. In the vicinity of Wurtsboro, however, NY 17 initially followed modern CR 166. It was realigned between 1935 and 1938 to use what is now CR 172 instead. Construction began in the early 1950s on a new limited-access alignment for NY 17 through Sullivan County. Over the next 10 years, NY 17 was realigned to follow the freeway as new sections of it opened up. By 1962, all of the modern Quickway from Parksville to Bloomingburg was complete and open to traffic.