Colfax Avenue

Colfax Avenue is the main street that runs east–west through the Denver metropolitan area in Colorado. As U.S. Highway 40, it was one of two principal highways serving Denver before the Interstate Highway System was constructed. In the local street system, Colfax lies 15 blocks north of the zero meridian street of Ellsworth Avenue, and would thus it otherwise be known as 15th Avenue (Avenues north of Ellsworth are generally numbered numerically.) The street was named for former Vice President Schuyler Colfax. At just under 50 miles (80 kilometers) in length, it is known as the "longest continuous commercial street in the United States".