former routing of NY 3 between Deferiet and Fargo. The NY 3G designation was removed in the 1940s. Its former routing remained unnumbered until September 1950, when it was redesignated as NY 3A. In 2016, a study by the Missile Defense Agency of the United States Department of Defense proposed the idea of shutting down NY 3A to the public for a missile defense site at Fort Drum. Ceasing to be a public highway, the traffic that would follow NY 3A (AADT of 2,298) would be directed onto NY 3 directly through the village of Carthage. Major intersections See also List of county routes in Jefferson County, New York References External links 003A Transportation in Jefferson County, New York