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Follows the East Coast of the United States, longest north-south US Highway US 2: 2,112: 3,399 I-5/SR 529 in Everett, WA: I-75 in St. Ignace, MI: 1926: current Western segment US 2: 460: 740 US 11 in Rouses Point, NY: I-95 in Houlton, ME: 1926: current Eastern segment US 3: 273: 439 Route 2A/Route 3 in Cambridge
Within the route log, "U.S. Route" is used in the table of contents, while "United States Highway" appears as the heading for each route. All reports of the Special Committee on Route Numbering since 1989 use "U.S. Route", and federal laws relating to highways use "United States Route" or "U.S. Route" more often than the "Highway" variants.
In 1918, Wisconsin became the first state to number its highways in the field followed by Michigan the following year. [1] In 1926 the American Association of State Highway Officials (AASHO) established and numbered interstate routes (United States Numbered Highways), selecting the best roads in each state that could be connected to provide a national network of federal highways.
The following table is used to track which states have separate articles on their highway systems along with list articles on the different types of highways in the state's highway system. The table also tracks which states' lists need to be converted to the list templates .
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U.S. Highways by state or territory (49 C) Special routes of the United States Numbered Highway System (1,887 P) Bridges of the United States Numbered Highway System (1 C, 423 P)
Auxiliary highways have an added digit prefixing the number of the parent highway. Five route numbers are duplicated in the system; the corresponding highways are in different regions, reducing potential confusion. In addition to primary highways in the contiguous United States, there are signed Interstates in Hawaii and unsigned Interstates in ...
A special route of the United States Numbered Highway System is a route that branches off a U.S. Highway in order to divert traffic from the main highway. Special routes are distinguished from main routes by, in most cases, the addition of an auxiliary plate that describes what type of route it is, while the main highway carries no such sign.