Location: I-90 and SD-34, Lawrence Cty A few miles after 34 joins I-90 and 14, it will split to head towards Belle Fourche as we enter Lawrence Cty Location: I-90 and SD-34, Lawrence Cty Exit for SD-34 which heads towards Belle Fourche and Hulett Wyo. W to US-85, E to I-90 Bus E to I-90 … Continue reading South Dakota Highway 34, I-90/I-90 Bus/US-14/US-14A/SD-79 to I-90/US-14