ˌɛsˈeɪtʃ ˈeɪɾi fˈaɪv wʌz ɚɹˈɪdʒɪnəli dˈɛzɪɡnˌeɪɾᵻd ˌɔn ˈɔːɡəst twˈɛnti wˈʌn, nˈaɪntiːnhˈʌndɹɪd twˈɛnti θɹˈiː ɐlˈɔŋ ɐ ɹˈaʊt fɹʌm ˈiːɡəl pˈæs tə dˈɪli vˈaɪə kæɹˈɪzoʊ spɹˈɪŋz.
SH 85 was originally designated on August 21, 1923 along a route from Eagle Pass to Dilley via Carrizo Springs.