High Quality Content by WIKIPEDIA articles! New York State Route 104 (NY 104) is a 182.41-mile (293.56 km) long east–west state highway in Upstate New York, 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 that of the southern shoreline of Lake Ontario, along a ridge of the old shoreline of Glacial Lake Iroquois. The western terminus of NY 104 is at an intersection with NY 384 in Niagara Falls, Niagara County, while its eastern terminus is at 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 city is a limited-access highway known as the Keeler Street Expressway west of NY 590 and the Irondequoit – Wayne County Expressway east of NY 590; from Williamson to Oswego, NY 104 is a super two highway.