ðə ɹˈaʊt wʌz tɹˈʌŋkeɪɾᵻd tə ɹˈɑːbstaʊn ˌɔn sɛptˈɛmbɚ twˈɛnti sˈɪks, nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi nˈaɪn, wɪð ɐn ɔːlɹˌɛdikənstɹˈʌktᵻd sˈɛkʃən bᵻtwˌiːn kˈɔːɹpəs kɹˈɪsti ænd tʃˈæpmən ɹˈæntʃ tɹænsfˈɜːd tʊ ˌɛsˈeɪtʃ tˈuːhˈʌndɹɪd ˈeɪɾi sˈɪks.
The route was truncated to Robstown on September 26, 1939, with an already-constructed section between Corpus Christi and Chapman Ranch transferred to SH 286.