US-60/Grand Avenue is an important regional facility controlled and maintained by the Arizona Department of Transportation (ADOT) as part of the National Highway System (NHS). Because of its regional significance, and importance to local agencies, it has been the subject of numerous studies, improvement projects, and public interest. It serves multiple purposes, including local access, commuter travel, and freight movement. It also serves as a link to Kingman, Arizona and Las Vegas, Nevada.

As the region and communities along the corridor have developed, the need to reach a consensus on the ultimate future role for the corridor has never been greater. Maricopa Association of Governments (MAG) facilitated the Corridor Optimization, Access Management Plan, and System Study (COMPASS) along the US-60/Grand Avenue corridor. The study area begins at the State Route 303 Loop traffic interchange in Surprise and ends at the Willetta Street intersection in Phoenix. It passes through portions of the City of Surprise, City of El Mirage, Town of Youngtown, City of Peoria, City of Glendale, City of Phoenix, and Maricopa County. The corridor is operated and maintained by ADOT.