The current zero milestone dates from the spring of 1923, replacing a temporary marker placed on this site in President's Park in 1919. Originally intended as a central point from which to measure highway distances throughout the United States, the zero milestone marked the beginning of the age of the automobile and the national system of paved roadways. Today, roads and other distances in Washington, DC, as well as in surrounding suburbs, are measured from the zero milestone.
Library of Congress Prints and Photographs Division. View original.
Made of granite, the marker has engravings on four sides and a compass rose on the top. It is 2 feet square and 4 feet high.