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On May 31, 2003, the American Association of State Highway and Transportation Officials approved a new number for the remaining segments of U.S. 666 in Arizona, Colorado, and New Mexico. At the request of State transportation officials, the route became U.S. 491, a spur of U.S. 191. This is the story of why it was numbered U.S. 666 in the first place.
Content Notes:
The original format of this document was an active HTML page(s) located under https://www.fhwa.dot.gov/infrastructure/history.cfm. The Federal Highway Administration converted the HTML page(s) into an Adobe® Acrobat® PDF file to preserve and support reuse of the information it contained. The intellectual content of this PDF is an authentic capture of the original HTML file. Hyperlinks and other functions of the HTML webpage may have been lost, and this version of the content may not fully work with screen reading software.
2024-03-20 | FHWA Highway History Website Articles
Abstract:
Chapter 2 of President Dwight D. Eisenhower and the Federal Role in Highway Safety describes the balance between federal and state governments and how...
2015-04-07 | FHWA Highway History Website Articles
Abstract:
Historian Mark H. Rose explained some of the effects of the change on the urban vision conceived along with the Interstate System: In many instances, ...
2023-06-30 | FHWA Highway History Website Articles
Abstract:
In honor of National African American History Month, the Office of Civil Rights and Office of Public Affairs would like to recognize Victor H. Green, ...
United States. Department of Transportation. Federal Highway Administration
2023-06-30 | FHWA Highway History Website Articles
Abstract:
When the Joint Board on Interstate Highways released its proposal for a U.S. numbered highway system in October 1925, it identified U.S. 95 as a route...
2023-06-30 | FHWA Highway History Website Articles
Abstract:
The Highway History page recently received an inquiry about where the first Walk/Don't Walk sign was installed. This question has come up before, but ...
United States. Department of Transportation. Federal Highway Administration
2023-06-30 | FHWA Highway History Website Articles
Abstract:
The U.S. numbering plan was developed in the mid-1920's by the Joint Board on Interstate Highways, which included representatives of the U.S. Bureau o...
United States. Department of Transportation. Federal Highway Administration
2023-06-30 | FHWA Highway History Website Articles
Abstract:
When the Joint Board on Interstate Highways released its report on the proposed U.S. numbered highway plan in October 1925, the report identified U.S....
United States. Department of Transportation. Federal Highway Administration
2023-06-30 | FHWA Highway History Website Articles
Abstract:
After reading this article (Where was the First Walk/Don't Walk Sign Installed?), several people commented on the reference to the "scramble," during ...
United States. Department of Transportation. Federal Highway Administration
2023-06-30 | FHWA Highway History Website Articles
Abstract:
In the late 1920's, the Bureau of Public Roads (BPR) issued a series of news releases on the major U.S. highways. The releases described the routes, i...
United States. Department of Transportation. Federal Highway Administration
2023-06-01 | FHWA Highway History Website Articles
Abstract:
Memorandum on key statements made by Former President Dwight D. Eisenhower towards General John S. Bragdon about the Interstate Highway Program on fun...
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