Route 66, known as the "Mother Road," is officially named the Will Rogers Highway. This designation was established in 1952 to honor the famous American humorist and entertainer who was born in Oklahoma, one of the states the route traverses. Beyond this official title, the road is affectionately called the "Main Street of America," a nickname it earned because it served as the primary thoroughfare for hundreds of small towns across eight states. In 2026, as the road prepares for its 100th Anniversary, it is also frequently referred to as the "Road of Dreams" or "Historic Route 66." Interestingly, in many local municipalities, the road carries standard street names like "Santa Monica Boulevard" in California or "Adams Street" in Chicago. While the official "U.S. 66" designation was removed from the federal highway system in 1985, its legacy as the "Mother Road" remains its most recognized and culturally significant name.