ðə hˈaɪweɪ fɹʌm wˈɛstmɪnstɚ tə mˈæntʃɛstɚ wʌz dˈɛzɪɡnˌeɪɾᵻd wˈʌn ʌvðɪ ɚɹˈɪdʒɪnəl stˈeɪt ɹˈoʊdz baɪ ðə mˈɛɹɪlˌænd stˈeɪt ɹˈoʊdz kəmˈɪʃən ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪn.
The highway from Westminster to Manchester was designated one of the original state roads by the Maryland State Roads Commission in 1909.