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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.
This map shows the Interstate highways in the contiguous US, color-coded by route number and type. (Alaska, Hawaii, and Puerto Rico also have Interstate highways, but use separate numbering systems.) This map uses publicly available data from OpenStreetMap displayed using Mapbox GL JS .
United States Numbered Highways are the components of a national system of highways administered by the American Association of State Highway and Transportation Officials (AASHTO), a nonprofit, nonpartisan association, [3] and the various state departments of transportation. These were initially designated on November 11, 1926, and extend throughout the contiguous United States.
30 kwi 2018 · Generally, north/south highways have odd numbers that get higher from east to west, while east/west ones have even numbers that get higher from north to south. Major routes mostly end in 1s and 0s while three-digit numbers tend to represent secondary or spur highways. Map of the Interstate Highway System
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.
This maps displays the National Highway System (NHS). The National Highway System consists of roadways important to the nation’s economy, defense, and mobility.
One stretch of highway in southwestern New Mexico carried markers for the Apache Trail, the Atlantic-Pacific Highway, the Evergreen Highway, the Lee Highway, and the Old Spanish Trail. Even in the East, multiple routings were common.
