(This article is about the current alignment of NY 104. For previous alignments of NY 104, see New York State Route 104 (disambiguation).) New York State Route 104 (NY 104) is a 182.41-mile (293.56 km) long east–west state highway in Upstate New York in the United States. It spans six counties and enters the vicinity of four cities—Niagara Falls, Lockport, Rochester, and Oswego—as it follows a routing largely parallel to the southern shoreline of Lake Ontario, along a ridge of the old shoreline of Glacial Lake Iroquois. The western terminus of NY 104 is an intersection with NY 384 in Niagara Falls, Niagara County, while its eastern terminus is a junction with NY 13 in the town of Williamstown, Oswego County. The portion of NY 104 between Rochester and the village of Webster east of the cit