After conducting research, I was unable to find any information on a boat ramp specifically named "Airport Road 266" in Live Oak County, Texas. Therefore, I am unable to provide information on its characteristics such as width, the body of water it services, and what kinds of craft are permitted on the water.

It is possible that the boat ramp may have a different name or there may have been a change in the name or location of the ramp. I suggest contacting local authorities or waterfront management for up-to-date information on boat ramps in Live Oak County.