ɪt ɹˈʌnz fɹʌm ˌɪlənˈɔɪ ɹˈaʊt wˈʌnhˈʌndɹɪd fˈɪfti nˈaɪn nˈɔːɹθ ʌv bˈʌŋkɚ hˈɪl tə ðə sˈɪɾi ʌv mˈaʊnt ˈɑːlɪv æɾ ˌɪlənˈɔɪ stɹˈiːt, ɐ fˈɔːɹmɚɹ ɐlˈaɪnmənt ʌv jˈuː.ˈɛs. ɹˈaʊt sˈɪksti sˈɪks.
It runs from Illinois Route 159 north of Bunker Hill to the city of Mount Olive at Illinois Street, a former alignment of U.S. Route 66.