The United States Numbered Highway System is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these hi
The "final" U.S. Highway plan as approved November 11, 1926
This sign, photographed in 1941 on US 99 between Seattle, Washington, and Portland, Oregon, illustrates one rationale for a federal highway system: national defense.
U.S. Route 1
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U.S. Route 1 or U.S. Highway 1 is a major north–south United States Numbered Highway that serves the East Coast of the United States. It runs 2,370 miles from Key West, Florida, north to Fort Kent, Ma
United States Numbered Highway System
…routes are major routes, and three-digit routes are numbered as shorter spur routes from a main route. Odd numbers generally increase from east to west; US 1 follows the Atlantic Coast and US 101 follows the Pacific Coast. (US 101 is one of the many exceptions to the standard numbering grid; its first "digit…
Mile 0, Key West, Florida
US 1 crossing Moser Channel along the Overseas Highway, Florida Keys
US 1 along Biscayne Boulevard in downtown Miami, Florida
Skyline of Augusta, Georgia, as seen from US 1 in North Augusta near I-520