fɹʌmðə fɔːɹmˈeɪʃən ʌvðɪ ˌɪntɚstˈeɪt hˈaɪweɪ sˈɪstəm, ðə hˈaɪweɪ wʌz ɡɹˈædʒuːəli ʌpɡɹˈeɪdᵻd tʊ ˌɪntɚstˈeɪt hˈaɪweɪ stˈændɚdz ænd sˈaɪnd æz aɪ ˈeɪɾi.
From the formation of the Interstate Highway System, the highway was gradually upgraded to Interstate Highway standards and signed as I-80.