Acting on a tip on the AARoads Forum I drove to Oklahoma yesterday to investigate the possibility that Scenic 412 had been decommissioned in favor of Alternate 412.
In a word, yes. All the Scenic 412 signs have been removed and replaced with Alternate 412. Or, more precisely, 412 ALT.
Exit signs, however. refer to it as Alternate 412OK, so I'm being a little nit-picky over its official designation. Call it 412 Alt or Alternate 412, it's still the same road. ;)
In related news, 412 is receiving new gantry signs at the west end of the Cherokee Turnpike and at US 69.
I wonder: since ODOT is upgrading exit signs (the Cherokee Turnpike has all new signs, as well) did they finally decide to remove the confusion between Scenic 412 and Alternate 412?