At this time, none of current SH-84 was part of the highway; instead, the route began at US-75 and US-270 in Horntown, then proceeded east to Lamar, and then turned north to Carson, where it ended.
æt ðɪs tˈaɪm, nˈʌn ʌv kˈɜːɹənt ˌɛsˈeɪtʃ ˈeɪɾi fˈoːɹ wʌz pˈɑːɹt ʌvðə hˈaɪweɪ; ɪnstˈɛd, ðə ɹˈaʊt bɪɡˈæn æt jˌuːˈɛs sˈɛvənti fˈaɪv ænd jˌuːˈɛs tˈuːhˈʌndɹɪd sˈɛvənti ɪn hˈɔːɹntaʊn, ðˈɛn pɹəsˈiːdᵻd ˈiːst tə lɐmˈɑːɹ, ænd ðˈɛn tˈɜːnd nˈɔːɹθ tə kˈɑːɹsən, wˌɛɹ ɪɾ ˈɛndᵻd.