I know for a fact that a Supercharger is nearing completion in Bend, Oregon. My brother-in-law sent me a photo three days ago. It's located in the Fred Meyer parking lot where 97 rolls into the south side of town and business 97 splits off.
61535 S. Highway 97, Bend, Oregon 97702
It doesn't show up on the Supercharger map as a "coming soon", though, which leads me to believe there must be others under clandestine construction out there.