List of United States Numbered Highways explained

United States Numbered Highway System
Shields:	Type: US Route: 6 Type: US Route: 20 Type: US Route: 281
Caption:	U.S. Highway shields
Map:	Map of current US Routes.svg
Map Notes:	Map of the present U.S. Highway network
Formed:	November 11, 1926^[1]
Length Mi:	157724
Us:	U.S. Highway nn (US nn) U.S. Route nn (US nn)
Links:	US

United States Numbered Highways are components of a national system of highways that is administered by the American Association of State Highway and Transportation Officials (AASHTO) and the various state departments of transportation. These U.S. Numbered Highways 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 300miles 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.^[2] __TOC__

See also

• • List of Interstate Highways
• National Highway System

External links

• Endpoints of US Highways, from Dale Sanderson (www.usends.com)
• US Highway Endings, from Adam Froehlig (www.ajfroggie.com)

Notes and References

1. Web site: Weingroff . Richard F. . From Names to Numbers: The Origins of the US Numbered Highway System . Highway History . . June 10, 2011 . April 7, 2011 .
2. Book: . January 2000 . retained from October 13, 1991 . http://route.transportation.org/Documents/HO1_Policy_Establ_Develop_USRN.pdf . Establishment and Development of United States Numbered Highways . AASHTO Transportation Policy Book . Washington, DC . American Association of State Highway and Transportation Officials . January 16, 2014 . dead . https://web.archive.org/web/20141022063759/http://route.transportation.org/Documents/HO1_Policy_Establ_Develop_USRN.pdf . October 22, 2014 . mdy-all .