I was looking at the Blue Ridge Parkway and US 221 around the Moses Cone Manor and Blowing Rock. There is a chance we may visit the Moses Cone Manor next weekend and cut over to US 221 to come into Blowing Rock for lunch. I noticed there is an indirect interchange between the two with a small county road as a connector. The Blue Ridge Parkway has a waypoint as SR1557 on its side but there is not a corresponding point on US 221 for its connection. I looked at GSV and both sides have signs to point to the other road. I grabbed these coordinates from Google Maps for the point on US 221.
36.146022, -81.700113