ðə pˈoːɹʃən ʌv ˌɛnwˈaɪ fˈoːɹhˈʌndɹɪd ˈeɪt fˈɔːɹmɚ ɹˈaʊɾɪŋ bᵻtwˌiːn hˈɪnsdeɪl ænd kjˈuːbə wʌz ɹᵻtˈeɪnd æz ɐ stˈeɪt hˈaɪweɪ ænd ɹᵻnˈʌmbɚd tʊ ˌɛnwˈaɪ fˈoːɹhˈʌndɹɪd fˈoːɹɾi sˈɪks ˌɔn dʒuːlˈaɪ wˈʌn, nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈoːɹ.
The portion of NY 408's former routing between Hinsdale and Cuba was retained as a state highway and renumbered to NY 446 on July 1, 1974.