Last modified: 2014-07-07 12:33:42 UTC
For instance in http://en.wikipedia.org/wiki/Category:U.S._Highways_in_Pennsylvania the two routes with categories are separate - there should be a way to combine the two lists. It would probably be best to use something like __NOSEPARATE__ in the wikicode for the category.
This probably would not make sense to do in general.
I'm not saying it should be done in general, just with a special __NOSEPARATE__ or something that would only apply it to specific categories.