ðə pˈoːɹʃən ʌv hˈaɪweɪ fɹʌm jˌuːˈɛs nˈaɪnti fˈaɪv tə dˈɛnɪˌoʊ bɪkˌeɪm ɐ ɡɹˈævəl ɹˈoʊd baɪ nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi ænd wʌz nˌɑːt fˈʊli pˈeɪvd ʌntˈɪl nˈaɪntiːnhˈʌndɹɪd fˈɪfti θɹˈiː.
The portion of highway from US 95 to Denio became a gravel road by 1940 and was not fully paved until 1953.