Arizona Roads is a hand-built guide to the state's highways, combining route histories, old maps, numbering changes, freeway information, photographs, and oddities from decades of Arizona road development.
Alps Roads has documented highways, streets, signs, and road infrastructure on the Web since 1997, preserving both transportation history and old-school field photography.
AJFroggie became a long-running personal highway-history resource covering Interstate planning, route histories, maps, proposals, and transportation details later cited by other road-history references.
Eric Stuve's OKRoads preserves highway guides, road-trip photography and hand-built maps from the era when documenting an interchange meant driving there with a camera.