SR 77 passes through a variety of terrain from desert, to forest and mountains, to high desert as it travels from Tucson to the Navajo Nation.
SR 77, along with US 60 goes through Salt River Canyon. The old bridge pictured below was replaced by the new, wider bridge in the late 90s. The old bridge is now a pedestrian bridge.
SR 77 is called Miracle Mile for a small stretch in Tucson. The Miracle Mile name is likely derived from when a real estate developer decided to create a business center outside of Downtown Tucson, similar to the Miracle Mile in Los Angeles. Check out the Wikipedia article for more info about it.
7/31/2021 - SR 77 South, south of SR 79 near Oracle Junction
9/18/2021 - SR 77 North (Miracle Mile), just east of I-10 - Tucson