New York State Route 18 (NY 18) is an east–west state highway in western New York in the United States. It runs parallel to the south shore of Lake Ontario for most of its length between Niagara County and Monroe County. NY 18, which also passes through Orleans County, acts as a northerly alternate to NY 104, another east–west route that parallels NY 18 to the south on Ridge Road. The western terminus of NY 18 is at a complex grade-separated interchange with NY 104 outside the village of Lewiston. Its eastern terminus is at a junction with NY 104 in an area of Rochester known as Eastman Business Park.

Ridge Road is a 121.5-mile (195.5 km) east–west road that traverses four counties in Upstate New York in the United States. The road begins adjacent to the Niagara River at an intersection with Water Street in the village of Lewiston, Niagara County, and passes through several towns, villages, and the city of Rochester before arriving at its eastern terminus at a junction with New York State Route 370 (NY 370) southwest of Red Creek, Wayne County. It is named for the rise atop which the road was built, a mound of sand and gravel that was formed when it was the shoreline of ancient Glacial Lake Iroquois. The ridge is often confused with the nearby Niagara Escarpment, which is much taller, geologic in origin, and lies a few miles to the south.