ðɪ ɚɹˈɪdʒɪnəl hˈaɪweɪ wʌz dˈɛzɪɡnˌeɪɾᵻd ˌɔn ˈɔːɡəst twˈɛnti wˈʌn, nˈaɪntiːnhˈʌndɹɪd twˈɛnti θɹˈiː fɹʌm sˌæn mˈɑːɹkoʊz tə lˈuːlɪŋ, ɹᵻplˈeɪsɪŋ mˈoʊst əv ˌɛsˈeɪtʃ twˈɛnti nˈaɪn ˈeɪ ðə ɹˈɛst ʌv ˌɛsˈeɪtʃ twˈɛnti nˈaɪn ˈeɪ wʌz kˈænsəld.
The original highway was designated on August 21, 1923 from San Marcos to Luling, replacing most of  SH 29A (the rest of SH 29A was cancelled).