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A map of the Strategic Highway Network, one component of the NHS Map of average freight truck traffic on the NHS in 2015. According to the Federal Highway Administration, the 160,000-mile (260,000 km) National Highway System includes roads important to the United States' economy, defense, and mobility, from one or more of the following road networks (specific routes may be part of more than ...
NDOT Historical Maps webpage (files in PDF format) Official state highway maps. 1971 Nevada State Map – Ljthefro (talk · contribs) 1976–1977 Nevada State Map – Ljthefro (talk · contribs) 2000–2001 Nevada State Map – Ljthefro (talk · contribs) 2002–2003 Nevada State Map – Ljthefro (talk · contribs)
In 1926, the United States Numbered Highway System was established, creating the first national road numbering system for cross-country travel. The roads were funded and maintained by U.S. states, and there were few national standards for road design. United States Numbered Highways ranged from two-lane country roads to multi-lane freeways.
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.
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 ...
The following 22 pages use this file: 1956 in the United States; Controlled-access highway; Driving in the United States; Economy of the United States; Highway systems by country; List of auxiliary Interstate Highways; List of business routes of the Interstate Highway System; List of gaps in Interstate Highways; List of transport megaprojects
The following list contains the most notable road interchanges within the United States divided by each state, which are mainly part of the national Interstate Highway System and are all freeways intersecting with each other at a junction.