:How about deleting the toll bridges cat and putting all of its members in the parents? This would of course involve three separate categories - toll bridges in New York, bridges in NYC and toll roads in NYC (if the latter exists). Having articles in both a category and its parent is just bad for maintenance. You argument could be easily extended - what if someone wants to know about bridges in the U.S. in general? Should we not put all those bridges in Category:Bridges in the United States?   | )