To designate certain public lands in the Sonoran Desert of the State of Arizona as national conservation areas and wilderness areas, and for other purposes.

Arizona Sonoran Desert Heritage Act of 2018 This bill establishes the Belmont-Harquahala National Conservation Area and the Gila Bend National Conservation Area in Arizona. The bill designates specified wilderness and wilderness additions in Maricopa County, Arizona, as wilderness areas and as components of the National Wilderness Preservation System. The bill establishes the Sentinel Plain Special Management Area and the Rainbow Valley Special Management Area in Arizona. The Department of the Interior shall provide for the protection of the Agua Caliente Road.