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Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,099.7 miles (4,988.5 km). It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and the Northeast, ending in Boston, Massachusetts.
The "0" in its route number indicates that US 20 is a major coast-to-coast route. Spanning 3,365 miles (5,415 km), it is the longest road in the United States, [1] and, in the east, the route is roughly parallel to Interstate 90 (I-90), which is the longest Interstate Highway in the U.S.
United States: Newport, Oregon: Boston, Massachusetts: Longest road in the United States. [4] Ruta Nacional 40: 5,194 km (3,227 mi) Argentina: Cape Virgenes, Santa Cruz Province, Argentina: La Quiaca, Provincia de Jujuy: At km 4601 is the highest road outside the Himalayas with 5000 msal and the longest in South America. Interstate 90: 4,861 km ...
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 ...
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]
With a length of 1,924 miles (3,096 km), I-95 is the longest north–south Interstate and the sixth-longest Interstate Highway overall. [2] I-95 passes through 15 states (as well as a brief stretch in the District of Columbia while crossing the Potomac River), more than any other Interstate.
Follows the East Coast of the United States, longest north-south US Highway US 2: 2,112: 3,399 I-5/SR 529 in Everett, WA: ... Interstate 37 near San Antonio, TX
U.S. Route 281 (US 281) is a north–south United States Numbered Highway. At 1,875 miles (3,018 km) [ 3 ] it is the longest continuous three-digit U.S. Route. The highway's northern terminus is at the International Peace Garden , north of Dunseith, North Dakota , at the Canadian border , where it continues as Highway 10 .