From Wikipedia:

The Zero Milestone is a monument in Washington, D.C. intended as the initial milestone from which all road distances in the United States should be reckoned.

Designed by Washington architect Horace W. Peaslee, the monolith is about 2 feet square and about 4 feet high. It is made of precambrian 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.

The monument has engravings on five surfaces:

* North: ZERO MILESTONE
* East: STARTING POINT OF SECOND TRANSCONTINENTAL MOTOR CONVOY OVER THE BANKHEAD HIGHWAY, JUNE 14, 1920
* South: POINT FOR THE MEASUREMENT OF DISTANCES FROM WASHINGTON ON HIGHWAYS OF THE UNITED STATES
* West: STARTING POINT OF FIRST TRANSCONTINENTAL MOTOR CONVOY OVER THE LINCOLN HIGHWAY, JULY 7, 1919
* Top (now nearly illegible on the bronze disk): THE U.S. COAST AND GEODETIC SURVEY DETERMINED THE LATITUDE LONGITUDE AND ELEVATION OF THE ZERO MILESTONE

In his plan for Washington, Pierre Charles L'Enfant intended a column to be placed 1 mile east of the Capitol, "from which all distances of places through the continent were to be calculated." Instead, in 1804, the Jefferson Stone or Jefferson Pier was placed on the meridian of the White House due west of the Capitol (119 m WNW of the center of the Washington Monument) to mark the Washington meridian, 77° 02' 12.0".

The current Zero Milestone monument was conceived by good roads 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.
View in Google Earth Categories: Geographic Extremes
Links: www.fhwa.dot.gov
By: AlbinoFlea
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