ɪt wʌz ɚɹˈɪdʒɪnəli dˈɛzɪɡnˌeɪɾᵻd baɪ nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi θɹˈiː ɐlˈɔŋ ɪts kˈɜːɹənt ɹˈaʊt, ɛksˈɛpt ðˌɐɾɪt ɛkstˈɛndᵻd saʊθwˈɛst fɹʌm nˌævɐsˈoʊɾə tə bɹˈɛnæm.
It was originally designated by 1933 along its current route, except that it extended southwest from Navasota to Brenham.