ðə ɹˈaʊt wʌz dˈɛzɪɡnˌeɪɾᵻd æz ðə sˈʌðɚn ˈɛnd ʌv stˈeɪt ɹˈaʊt sˈɛvən ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪntiːn, ænd sˈɜːvd æz pˈɑːɹt ʌv jˌuːˈɛs nˈaɪnti θɹˈiː fɹʌm nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi wˈʌn tə nˈaɪntiːnhˈʌndɹɪd sˈɪksti sˈɛvən.
The route was designated as the southern end of State Route 7 in 1919, and served as part of US 93 from 1931 to 1967.