Belle Fourche - North
US-85 South at US-212
US-85 South at US-212 in Belle Fourche. Use US-85 south for I-90.
US-85 South Approaching US-212
US-85 South approaching US-212 in Belle Fourche. Use US-212 West to Wyoming State Line; US-212 East to Newell. Continue south on US-85 to Spearfish.