Location: Route 21 and Route 47, Washington Cty Reassurance shield as 47 joins 21. Location: Route 21 and CR 329, Old Mines, Washington Cty A couple miles later, we’ll enter unincorporated Old Mines. Location: Route 21 and Route 47, Old Mines, Washington Cty On the south side of Old Mines, 47 will split to continue … Continue reading Missouri Route 21, MO-47 to MO-47