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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.
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 "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.
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
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.
The tunnel carries Interstate 70 (I-70) under the Continental Divide in the Rocky Mountains. With a maximum elevation of 11,158 feet (3,401 m) above sea level, it is one of the highest vehicular tunnels in the world. The tunnel is the longest mountain tunnel and highest point on the Interstate Highway System.