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Since the policy on numbering and designating US Highways was updated in 1991, AASHTO has been in the process of eliminating all intrastate U.S. Highways under 300 miles (480 km) 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 ...
California State Route 56; Colorado State Highway 56; Florida State Road 56; Georgia State Route 56; Hawaii Route 56; Illinois Route 56; Indiana State Road 56; Iowa Highway 56; Kentucky Route 56; Louisiana Highway 56. Louisiana State Route 56 (former) Maryland Route 56; Massachusetts Route 56; Michigan: M-56 (1919–1957 Michigan highway ...
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.
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Categories of Interstate Highways sorted by U.S. state Wikimedia Commons has media related to Interstate Highways by state . In these subcategories, the Interstate highways are listed in numerical order, based on the last two digits.
State highways in Hawaii (56 P) I. State highways in Idaho (1 C, 69 P) State highways in Illinois (3 C, 163 P) ... List of longest state highways in the United States;
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.
There are 71 primary Interstate Highways in the Interstate Highway System, a network of freeways in the United States. These primary highways are assigned one- or two-digit route numbers, whereas their associated auxiliary Interstate Highways receive three-digit route numbers. Typically, even-numbered Interstates run east–west, with lower ...