U.S. Route 66 U.S. Route 66 U.S. Route 66 (US 66 or Route 66), also known as the Will Rogers Highway, the Main Street of America or the Mother Road, was one of the original highways in the U.S. Highway System. US 66 was established on November 11, 1926, with road signs erected the following year. The highway, which became one of the most famous roads in the United States, originally ran from Chicago, Illinois, through Missouri, Kansas, Oklahoma, Texas, New Mexico, and Arizona before ending in Santa Monica, California, near Los Angeles, covering a total of . It was recognized in popular
Greater Los Angeles whole had a population density of , covering of land area. Los Angeles' sprawl may originate in the region's decentralized structure. Its major commercial, financial, and cultural institutions are geographically dispersed rather than being concentrated in a single downtown or central area. Also, the population density of Los Angeles proper is low (approximately 8,100 people per square mile) when compared to some other large American cities such as New York (27,500), San Francisco (17,000), Boston (13,300), and Chicago (11,800). Densities are particularly high within a 5-mile radius of downtown, where some neighborhoods exceed 20,000 people per square mile. What gives