Maybe someone with familiarity with your part of town will know the answer. I don't have time to scour the databases right now to see if I could figure it out.
But here is some basic info to help you sort things like this out. AM towers tend to have insulators. Usually the tower is separated from it's foundation by an insulator. If the towers have guy-wires, look for "Johnny-ball" insulators every so often to break up the guy wires into short little pieces so the guy wires don't interfere with the A.M. signal.
Often as not, A.M. stations have little "huts" at the base of each tower. Usually on legs, not a building on the ground like a lawnmower garage in your back yard. These "huts" contain coils and other flotsam to match the feedline from the transmitter with the tower. And if it is a two-tower A.M. station you would expect to see a transmitter building somewhere on the property. An A.M. transmitter building tends to be a bit bigger and more substantial than the lawnmower garage in your back yard. (With some of the new solid state transmitters being smaller, that last rule-of-thumb does not hold firm. A station near me put up a Transmitter Building that any country church would be happy to have as their outdoor privvy.)