File:2017-07-23 08 06 15 View north along West Virginia State Route 31 (Williamstown Pike) at West Virginia State Route 2 (Emerson Avenue) in Valley Mills, Wood County, West Virginia.jpg - Wikimedia Commons
New Jersey Route 31 - Wikipedia
File:U.S. Route 31 in Michigan map.png - Wikimedia Commons
Route 31 - Muskegon Area Transit System
Johto Route 31 | Pokémon Wiki | Fandom
31 Route: Schedules, Stops & Maps - Easton Terminal Bay 7→Rail St And Baldwin Dr (Updated)