ðɪs wʌz tə kˈɔɹɪlˌeɪt wɪððə sˈɪmɪlɚli nˈʌmbɚd ˌoʊklɐhˈoʊmə hˈaɪweɪ sˈɛvənti fˈaɪv ˈeɪ ðˌɐɾɪt kənˈɛktᵻd tʊ æt ðə ɹˈɛd ɹˈɪvɚ.
This was to correlate with the similarly numbered Oklahoma Highway 75A that it connected to at the Red River.