To support the Road Naming (USA) page I created a new page as a complete table of all states in the US. Each state row identifies the 3 different road type names that are currently different by state. I started the table with the data currently in the road naming page, but if anyone sees that a particular state is using a different naming convention please let me know.
I wikilinked each state name with the home wiki page for that state. If there was no home page I created a redirect from that page to the most relevant page for the state (typically the To Do list page). If anything thinks there is a better page to link for a particular state let me know.
I noticed on the New Jersey to do page
the road naming convention listed the short form being adopted by more and more states recently. I am using that information as the basis for this table (and not the lack of that information on the road naming page) saying NJ is using the short form.
According to the Missouri to do page
the short form naming convention is being considered so I updated the table for that.
According to the Oregon to do list
, State Routes are ORxxx (without a dash). However looking across the state I am still seeing a lot of "State Hwy" names on roads, so I will let Alan comment on what should be in the table for now.