Some people collect stamps. Some people spend years documenting why a freeway number exists, where it used to go, and what planners wanted to build before somebody killed the proposal.
AJFroggie belongs to the second group.
The site is associated with highway researcher and enthusiast Adam Froehlig and has circulated for years in road-geek communities as a reference for Interstate and U.S. highway history.
Other transportation sites still cite AJFroggie pages for route histories and old planning documents. Interstate Guide, for example, has referenced Froehlig’s material on I-55. Historical highway discussions also point back to his archived maps and planning pages, including scans connected to the proposed Interstate system before construction reshaped the country.
The old site sits inside a broader body of work that includes transportation forums, photography, mapping, and Froehlig’s later blog writing.
That continuity matters because highway history is scattered by design.
Infrastructure leaves paperwork everywhere
A road can be physically obvious and historically confusing.
Routes get renumbered. Interchanges are rebuilt. Proposals die. State plans conflict with federal plans. Maps change. A designation can exist on paper without appearing on a sign, or disappear from signs while remaining technically alive.
Personal highway sites became unusually good at stitching those fragments together.
AJFroggie preserved maps, commentary, historical alignments, proposed corridors, and route-specific research in the period before map services and Wikipedia made basic highway information effortless to retrieve.
The useful part was often not simply a photograph of pavement. It was context.
Why was this road built here? Why did another road never happen? Why does an interchange look strangely overbuilt? Which old map proves the original intention?
That kind of question rewards obsessiveness.
The web was once full of people willing to be obsessively specific in public for free.
CacheRat’s 1,967 Ancient Web Domains research list exists for exactly this species of site. A page does not need institutional branding to become research infrastructure. It only needs somebody stubborn enough to keep collecting the evidence.
Roads change slowly.
Their websites can disappear overnight.