ˌʌndɚ ðə dˈuːəl kˈɑːntɹækts ʌv nˈaɪntiːnhˈʌndɹɪd θˈɜːtiːn, ɐn ˈɛlɪvˌeɪɾᵻd lˈaɪn wʌz bˈɪlt ˌoʊvɚ nˈuː jˈuːtɹɛçt ˈævənˌuː, ˈeɪɾi sˈɪksθ stɹˈiːt ænd stˈɪlwɛl ˈævənˌuː, ɹᵻplˈeɪsɪŋ ðə sˈɜːfɪs ɹˈeɪlweɪ.
Under the Dual Contracts of 1913, an elevated line was built over New Utrecht Avenue, 86th Street and Stillwell Avenue, replacing the surface railway.