 By 1926 , the piece of current NY 9N from Hague to Ticonderoga was designated as the easternmost leg of NY 47 , which continued west to Chestertown on modern NY 8 . In 1927 , most of NY 6 north of Round Lake was replaced by US 9 when U.S. Highways were first signed in New York . The lone exception was between Elizabethtown and Keeseville , where US 9 followed a previously unnumbered highway to the east instead . The bypassed section of NY 6 between the two locations was redesignated as NY 9W at this time . NY 9W was renumbered to NY 9N as part of the 1930 renumbering of state highways in New York , eliminating the alphanumerical duplication between itself and US 9W . 
