United States Numbered Highways are components of a national system of highways that is administered by the
(AASHTO) and the various state departments of transportation. These
U.S. Numbered Highways
The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) 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 ...
were initially designated on November 11, 1926, and extend throughout the
contiguous United States.
There are several U.S. Highways that exist entirely within one state. Since the current policy on numbering and designating US Highways was written in 1991, AASHTO has been in the process of eliminating all intrastate U.S. Highways under in length, "as rapidly as the State Highway Department and the Standing Committee on Highways of the American Association of State Highway and Transportation Officials can reach agreement with reference thereto"; new additions to the system must therefore serve more than one state.
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List
See also
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List of Interstate Highways
There are 70 primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. They are assigned one- or two-digit route numbers, whereas their associated auxiliary Interstate Highways receive three-digit ...
Notes
References
External links
Endpoints of US Highways from Dale Sanderson (www.usends.com)
US Highway Endings from Adam Froehlig (www.ajfroggie.com)
{{DEFAULTSORT:List Of United States Numbered Highways
U.S.
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
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