They're keeping the newer bridge.
Personally, I would keep both bridges. Kentucky's always had full responsibility for them, since the river is not the state line at this location, so the new bridge will not be any more of a funding burden since it will be tolled. If the older bridge is to be closed eventually, at least keep it until the end of its useful life and retire it whenever it might have critical maintenance coming due, such as a repainting (that shouldn't be necessary anytime soon, since it was painted not all that many years ago) or redecking.