 NY 380 was assigned as part of the 1930 renumbering of state highways in New York . On April 1 , 1980 , ownership and maintenance of NY 380 from NY 424 to the east end of its overlap with US 20 was transferred to Chautauqua County as part of a highway maintenance swap between the county and the state of New York . NY 380 was redesignated as County Route 380 ( CR 380 ) just over four months later on August 7 , 1980 . Unlike its state @-@ numbered predecessor , CR 380 continues south of NY 60 to the town of Busti , where it ends at a junction with Forest Avenue . 
