Location: US-18 and SD-471, Fall River Cty Reassurance shield after the SD-471 junction as we head out of the Edgemont area Location: US-18 and SD-471, Fall River Cty 12 miles to junction South Dakota 89, the fastest route to Rushmore and Rapid City from here Location: US-18 and CR 15, Fall River Cty Reassurance shield … Continue reading U.S. Route 18, SD-471 to SD-89