ˌɔn ɑːktˈoʊbɚ twˈɛlv, nˈaɪntiːnhˈʌndɹɪd twˈɛnti fˈaɪv, ˌɛsˈeɪtʃ ˈeɪɾi wʌz ɛkstˈɛndᵻd tə wˈɪmbɚli, bˌʌt ðɪs dɪdnˌɑːt tˈeɪk ɪfˈɛkt ʌntˈɪl dʒˈænjuːˌɛɹi wˈʌn, nˈaɪntiːnhˈʌndɹɪd twˈɛnti sˈɪks.
On October 12, 1925, SH 80 was extended to Wimberley, but this did not take effect until January 1, 1926.