The Zero Milestone is a zero mile marker monument in Washington, D.C., intended as the initial milestone from which all road distances in the United States should be measured when it was built. At present,[ when? ] only roads in the Washington, D.C., area have distances measured from it.
The monument stands just south of the White House at the north edge of the Ellipse, within President's Park. Atop the monument is a bronze 16-point compass rose with a very small worn-down pyramid at its center whose top serves as a National Geodetic Survey benchmark (HV1847). [1]
Designed by Washington architect Horace W. Peaslee, the monolith is about 2 feet square and about 4 feet high. It is made of precambrian Milford granite from Milford, Massachusetts, light pinkish to greenish gray, with spots of black biotite mica. The bronze disk on top of the milestone is "an adaptation from ancient portolan charts of the so-called wind roses or compass roses from the points of which extended radial lines to all parts of the then known world—the prototype of the modern mariner's compass." [4]
The monument has engravings on four surfaces:
In addition, a "brass plate placed on the ground at the north base" shown below, contains the following inscription. [4]
In his plan for Washington, Pierre (Peter) Charles L'Enfant intended a column to be placed 1 mile (1.6 km) east of the Capitol, in what is now Lincoln Park, "from which all distances of places through the continent were to be calculated." [7] Instead, in 1804, the Jefferson Stone or Jefferson Pier was placed on the meridian of the White House due west of the Capitol (390 feet (119 m) WNW of the center of the Washington Monument) to mark the Washington meridian, 77° 02' 11.56".
The current Zero Milestone monument was conceived by Good Roads Movement advocate Dr. S. M. Johnson, formally proposed on June 7, 1919. He was inspired by ancient Rome's Golden Milestone located in the Forum. On July 7, 1919, a temporary marker for the Zero Milestone was dedicated on the Ellipse south of the White House during ceremonies launching the Army's first attempt to send a convoy of military vehicles across the country to San Francisco, California. On June 5, 1920, Congress authorized the Secretary of War to erect the current monument, design to be approved by the Commission of Fine Arts and installed at no expense to the government. Dr. Johnson took charge of the details and raised donations for the design and construction. The permanent Zero Milestone was dedicated in a ceremony on June 4, 1923. [4] [7]
The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Highway System in the United States. The system extends throughout the contiguous United States and has routes in Hawaii, Alaska, and Puerto Rico.
The Lincoln Highway is the first transcontinental highway in the United States and one of the first highways designed expressly for automobiles. Conceived in 1912 by Indiana entrepreneur Carl G. Fisher, and formally dedicated October 31, 1913, the Lincoln Highway runs coast-to-coast from Times Square in New York City west to Lincoln Park in San Francisco, originally through 13 states: New York, New Jersey, Pennsylvania, Ohio, Indiana, Illinois, Iowa, Nebraska, Colorado, Wyoming, Utah, Nevada, and California. In 1915, the "Colorado Loop" was removed, and in 1928, a realignment routed the Lincoln Highway through the northern tip of West Virginia. Thus, there are 14 states, 128 counties, and more than 700 cities, towns, and villages through which the highway passed at some time in its history.
The Federal-Aid Highway Act of 1956, also known as the National Interstate and Defense Highways Act, Pub. L. 84–627 was enacted on June 29, 1956, when President Dwight D. Eisenhower signed the bill into law. With an original authorization of $25 billion for the construction of 41,000 miles (66,000 km) of the Interstate Highway System over a 10-year period, it was the largest public works project in American history through that time.
President's Park, located in Downtown Washington, D.C., encompasses the White House and includes the Eisenhower Executive Office Building, the Treasury Building, and grounds; the White House Visitor Center; Lafayette Square; and The Ellipse. President's Park was the original name of Lafayette Square.
The Washington meridians are four meridians that were used as prime meridians in the United States which pass through Washington, D.C. The four that have been specified are:
The Ebright Azimuth is the point with the highest benchmark monument elevation in the U.S. state of Delaware. It is marked with a geodetic benchmark monument and has an elevation of 447.85 feet (136.50 m) above sea level. The only state high-point with a lower elevation is Britton Hill in the state of Florida at 345 feet (105 m) above sea level.
The term benchmark, bench mark, or survey benchmark originates from the chiseled horizontal marks that surveyors made in stone structures, into which an angle iron could be placed to form a "bench" for a leveling rod, thus ensuring that a leveling rod could be accurately repositioned in the same place in the future. These marks were usually indicated with a chiseled arrow below the horizontal line. A benchmark is a type of survey marker.
In many countries, kilometre zero or similar terms in other languages denote a particular location from which distances are traditionally measured and some use this as their official country location or coordinates for faster search at space satellites, this is also used for measuring distances between different countries around the world. Historically, they were markers where drivers could set their odometers to follow the directions in early roaming guide books.
The Ellipse, sometimes referred to as President's Park South, is a 52-acre (21 ha) park south of the White House fence and north of Constitution Avenue and the National Mall in Washington, D.C., US. The Ellipse is also the name of the five-furlong (1.0 km) circumference street within the park. The entire park, which features monuments, is open to the public and is part of President's Park. The Ellipse is the location for many annual events.
Jefferson Pier, Jefferson Stone, or the Jefferson Pier Stone, in Washington, D.C., marks the second prime meridian of the United States even though it was never officially recognized, either by presidential proclamation or by a resolution or act of Congress.
Survey markers, also called survey marks, survey monuments, or geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying. A benchmark is a type of survey marker that indicates elevation. Horizontal position markers used for triangulation are also known as triangulation stations. Benchmarking is the hobby of "hunting" for these marks.
The Pershing Map was the first blueprint for a national highway system in the United States, with many of the proposed roads later forming a substantial portion of the Interstate Highway System.
Interstate 80 (I-80) is a part of the Interstate Highway System that runs from San Francisco, California, to Teaneck, New Jersey. The portion of the highway in the US state of Utah is 197.51 miles (317.86 km) long through the northern part of the state. From west to east, I-80 crosses the state line from Nevada in Tooele County and traverses the Bonneville Salt Flats—which are a part of the larger Great Salt Lake Desert. It continues alongside the Wendover Cut-off—the corridor of the former Victory Highway—US Route 40 (US-40) and the Western Pacific Railroad Feather River Route. After passing the Oquirrh Mountains, I-80 enters the Salt Lake Valley and Salt Lake County. A short portion of the freeway is concurrent with I-15 through Downtown Salt Lake City. At the Spaghetti Bowl, I-80 turns east again into the mouth of Parleys Canyon and Summit County, travels through the mountain range, and intersects the eastern end of I-84 near Echo Reservoir before turning northeast toward the Wyoming border near Evanston. I-80 was built along the corridor of the Lincoln Highway and the Mormon Trail through the Wasatch Range. The easternmost section also follows the historical routes of the first transcontinental railroad and US-30S.
The Transcontinental Motor Convoys were early 20th century vehicle convoys, including three US Army truck trains, that crossed the United States to the west coast. The 1919 Motor Transport Corps convoy from Washington, D.C., to San Francisco used the incomplete Lincoln Highway.
The 1919 Motor Transport Corps convoy was a long distance convoy carried out by the U.S. Army Motor Transport Corps that drove over 3,000 mi (4,800 km) on the historic Lincoln Highway from Washington, D.C., to Oakland, California and then by ferry over to end in San Francisco.
The United States Coast and Geodetic Survey, known from 1807 to 1836 as the Survey of the Coast and from 1836 until 1878 as the United States Coast Survey, was the first scientific agency of the United States Government. It existed from 1807 to 1970, and throughout its history was responsible for mapping and charting the coast of the United States, and later the coasts of U.S. territories. In 1871, it gained the additional responsibility of surveying the interior of the United States and geodesy became a more important part of its work, leading to it being renamed the U.S. Coast and Geodetic Survey in 1878.
Henry Arnold Karo was a vice admiral in the former United States Coast and Geodetic Survey Corps, which is today known as the National Oceanic and Atmospheric Administration Commissioned Officer Corps. Vice Admiral Karo spent most of his working career in the United States Coast and Geodetic Survey, which provided coastal maps and charts for the United States. He rose through the organization's bureaucracy to become the director of the Survey.
USC&GS Mikawe was a United States Coast and Geodetic Survey launch in commission from 1920 to 1939.
The first USC&GSS Pathfinder, also noted in some NOAA histories as "old Pathfinder", was a United States Coast and Geodetic Survey ship in service from 1899 to 1941, when she was beached in sinking condition on January 30, 1942, after 40 years service in the Philippines.
The Transcontinental Traverse (TCT) was a geodetic survey traverse conducted in the Continental United States by the U.S. Coast and Geodetic Survey between 1961 and 1976. It was the most accurate large-area survey ever done prior to Global Positioning System surveys. TCT included over 2,700 survey stations, covered over 13,600 miles, and passed through 44 states.
July 7. - Departed Camp Meigs, 8:30 A.M. Dedicated Zero Milestone at the Ellipse, Potomac Park, 10 A.M. Departed Washington 11:15 A.M.
In the summer of 1919, a young Lieutenant Colonel named Dwight D. Eisenhower participated in the first Army transcontinental motor convoy. [...] As an observer for the War Department, Lt. Col. Eisenhower learned first-hand of the difficulties faced in traveling great distances on roads that were impassable and resulted in frequent breakdowns of the military vehicles. These early experiences influenced his later decisions concerning the building of the interstate highway system during his presidential administration.
