Hi Nmstrackman, R-73 is located on John Sevier Dr. A good portion of the road is maintained. Unfortunately, the portion of John Sevier Dr. where R-73 is located is not accessible by vehicle. I would suggest turning onto John Sevier Dr. off Alpine Dr. parking on John Sevier Dr. and walking. You will walk past the gate on John Sevier Dr. down a small hill and turn left at the intersection. It should be a easy walk to R-73 located on the left side of John Sevier Dr. going this way. You might look at the map located on the website. I hope this helps...