nˌɑːt fˈɑːɹ fɹʌm ˌɛnwˈaɪ fˈoːɹhˈʌndɹɪd fˈɪfti fˈoːɹ, ˌɛnwˈaɪ wˈʌnhˈʌndɹɪd ɪlˈɛvən hɐz ɐ ʃˈɔːɹt kəŋkˈɜːɹənsi wɪð sˌiːˈɑːɹ sˈɛvənti sˈɪks tˈaʊnlaɪn ɹˈoʊd ɐlˈɔŋ ðɪ ˈɪslɪp smˈɪθtaʊn ænd ðˈɛn ðə nˈeɪmz tʃˈeɪndʒᵻz tə hˈɔːpɔːdʒ ɹˈoʊd tˈaʊn lˈaɪn bᵻfˌoːɹ fˈʊli kɹˈɔsɪŋ ˌɪntʊ smˈɪθtaʊn.
Not far from NY 454, NY 111 has a short concurrency with CR 76 (Townline Road) along the Islip–Smithtown and then the names changes to Hauppauge Road town line before fully crossing into Smithtown.