New York State Route 173

State highway in central New York, US
The route parallels the track for roughly 2 mile (3 km), over which time it passes to the north of Greenlawn Memorial Park. As the trackage and the highway approach a point known as Amboy Station, NY 173 curves away from the railroad and heads southeast toward Amboy. After making the turn, NY 173 meets Pottery Road (County Route 164 or CR 164), a local road leading to Camillus Airport, a simple one runway facility located adjacent to the railroad line. NY 173 continues into and through Amboy, passing a large area of tailings that was once the site of the Syracuse Municipal Airport. The brownfields are bordered to the north by Ninemile Creek and to the south by the Old Erie Canal, both of which are traversed by NY 173 on its way into the densely populated Fairmount neighborhood of Camillus. ), and CR 63 between Thompson Road and Genesee Street. Within Syracuse, NY 173 is maintained by the city. The remainder of the route in both Onondaga and Madison counties is maintained by the New York State Department of Transportation.

East of Syracuse, the route passes through a narrow 1 mile (2 km) portion of the town of Onondaga and the hamlet of Southwood before entering the adjacent town of DeWitt. It continues east, serving Clark Reservation State Park as it heads toward the community of Jamesville, located at the northern end of the Jamesville Reservoir on Butternut Creek. Here, NY 173 intersects NY 91 in the center of the hamlet. Past Jamesville, the homes that had lined the highway give way to open areas to the south and large quarries to the north. The route passes north of the Onondaga County Correctional Facility just east of Jamesville. NY 173 was assigned as part of the 1930 renumbering of state highways in New York to the entirety of its modern alignment. Although NY 173 itself has not changed since that time, other routes have been overlaid on parts of NY 173 over the years. The segment of NY 173 between NY 175 in Onondaga and the east end of the NY 92 overlap in Manlius became part of NY 20N, a northerly alternate route of US 20 between Skaneateles and Cazenovia, c. no – c. 1938. In the early 1950s, the portion of NY 173 concurrent with NY 92 in Manlius also became part of NY 20SY, a second, even more northern alternate route of US 20 between Marcellus and Cazenovia. The NY 20N and NY 20SY designations were removed in 1961.