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    https://en.wikipedia.org › wiki › United_States_Numbered_Highway_System

    United States Numbered Highway System - Wikipedia

    • 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 highways were coordinated among the states, they are sometimes called Federal Highways, but the roa… See more

    System details

    In general, U.S. Routes do not have a minimum design standard, unlike the later Interstate Highways, and are not usually built to freeway standards. Some stretches of U.S. Routes do meet those standards. Many are d… See more

    History

    In 1903, Horatio Nelson Jackson became the first documented person to drive an automobile from San Francisco to New York using only a connection of dirt roads, cow paths, and railroad beds. His journey, covered by … See more

    The 1925 routes

    The original major transcontinental routes in 1925, along with the auto trails which they roughly replaced, were as follows:
    US 10, US 60, and US 90 only ran about two thirds of the way across the country, while US 1… See more

    How many types of highways are there?
    Highways are split into at least four different types of systems in the United States: Interstate Highways, U.S. Highways, state highways, and county highways. Highways are generally organized by a route number or letter. These designations are generally displayed along the route by means of a highway shield.
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