Category talk:United States Highway System

Is this category specifically for one- and two-digit U.S. Routes?
I noticed that for articles, only one- and two-digit routes are included, but for categories, there are three-digit routes as well. Should three-digit route categories be eliminated from here?

Also, shouldn't US 101, as the farthest west route, be listed here? DandyDan2007 (talk) 08:50, 24 November 2012 (UTC)