The portion of the route between Frewsburg and Conewango Valley became part of US 62 c. 1932, resulting in the truncation of NY 83 to its current southern terminus in the 1940s.

NY 83 begins at US 62 in the hamlet of Conewango Valley, located in the northeastern corner of the town of Ellington.

Known as Main Street, it bows out to the east slightly, and subsequently takes on a due north path as it heads through the town of Cherry Creek.

[3] NY 83 begins a more erratic routing, passing between West Mud Lake and Black Pond as it enters the town of Arkwright.

[3] NY 83 was assigned as part of the 1930 renumbering of state highways in New York to an alignment extending from Frewsburg in the south to Laona in the north.