Arizona State Highways
Arizona has a state highway system that is maintained by the Arizona Department of Transportation (ADOT). The system includes 1,063 miles of state highways, which are designated with the prefix “SR”. State highways are typically numbered in a sequential order, with the exception of a few highways that have been given historical or geographical designations.
The Arizona State Highway system was introduced on September 9, 1927, by the State Highway Commission (formed on August 11 of the same year). It incorporated the new federal aid system and also the U.S. Highway system. The 1927 plan included 27 state routes, most of which were simply dirt roads. Until 1942, the state route marker signs contained a Native American swastika that were used by Navajos, but were removed after the U.S.’s entry into World War II against Nazi Germany which had a reversed swastika as its emblem and became strongly negatively associated with the Nazis.
The Arizona State Highway system is an important part of the state’s transportation infrastructure. It provides a safe and efficient way for people to travel throughout the state. ADOT is committed to maintaining and improving the state highway system to ensure that it meets the needs of the state’s residents and businesses.