 | This is an essay which contains the advice or opinions of one or more members of the U.S. Roads WikiProject. While it is not a part of the standards the project promotes, it provides some recommendations and ideas for members to consider. |
Many times at AFD, users will vote on a highway article with the argument that highways aren't notable enough for an article. Here's an FAQ answering common objections voiced by anti-road editors (or sometimes not voiced, but you can tell that's what they're thinking ;) ), answering why highway articles are useful. There are also some points that answer why such and such road may not be notable, even though many other roads are. This was originally posted as a bulleted list at Wikipedia talk:WikiProject Highways/Archive 1#Highways... why are they Notable? - you may find that form more readable.
This FAQ covers the United States primarily, but with a bit of creativity can be applied to roads in other countries. You can read the U.S. Road project standards for notability at Wikipedia:WikiProject U.S. Roads/Notability.