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A map of the United States' Interstate Highways as of 1 October 1970. Numbered highways in the United States; List of Interstate Highways; List of United States Numbered Highways; Further information: Interstate Highway System; United States Numbered Highway System; Historic trails and roads in the United States
The Pershing Map FDR's hand-drawn map from 1938. The United States government's efforts to construct a national network of highways began on an ad hoc basis with the passage of the Federal Aid Road Act of 1916, which provided $75 million over a five-year period for matching funds to the states for the construction and improvement of highways. [8]
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, odd-numbered Interstates run south–north, with lower ...
Thus, the system of U.S. Highways has always been an equal partnership between the federal government and the state governments. This was a plan that changed dramatically with the advent of the Interstate Highway System beginning in the 1950s, but the system of U.S. Highways still continued to be upgraded under the 50%–50% funding.
The United States Numbered Highway System is an older system consisting mostly of surface-level trunk roads, coordinated by the American Association of State Highway and Transportation Officials and maintained by state and local governments. U.S. Highways have been relegated to regional and intrastate traffic, as they have been largely ...
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This file requires updating because: Multiple interstates and future interstate are missing. In doing so, you could add a timestamp to the file. Please notify the uploader with {{subst:update-note|1=File:Map of current Interstates.svg|2= Multiple interstates and future interstate are missing.}} ~~~~