NY 3 remained on what is now NY 31 between Middleport and Medina until the 1930 renumbering of state highways in New York when it was realigned between the two villages to use what is now NY 31E.Automobile Legal Association (ALA) Automobile Green Book, 1930–31 and 1931–32 editions, (Scarborough Motor Guide Co., Boston, 1930 and 1931). The 1930–31 edition shows New York state routes prior to the 1930 renumbering U.S. Route 104 was assigned to all of Ridge Road , replacing then-NY 31 west of Rochester. As a result, NY 31 was shifted southward onto most of NY 3 from Niagara Falls to Rochester, including between Middleport and Medina. NY 31 was realigned on January 1, 1949, to follow its current alignment between the two villages. The former routing of NY 31 was redesignated as NY 31E, a northerly alternate route of NY 31.
