Oklahoma State Highway 91
2006 specification highway marker.
Oklahoma 91 shield posted at the end of the northbound off-ramp from U.S. 75.
Photo by Alex Nitzman / Justin Cozart, 9/30/2007.
2006 specification highway marker.
Oklahoma 91 shield posted at the end of the northbound off-ramp from U.S. 75.
Photo by Alex Nitzman / Justin Cozart, 9/30/2007.