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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 ...
In the United States, each state maintains its own system of state highways. [a] This is a list of the longest state highways in each state.As of 2007, the longest state highway in the nation is Montana Highway 200, which is 706.624 miles (1,137.201 km) long.
Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,021 miles (4,862 km). It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and the Northeast, ending in Boston, Massachusetts.
Shortest Interstate highway in contiguous United States I-87: 333.49: 536.70 I-278 in New York City: ... Longest primary north-south Interstate highway I-96: 192.06:
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: I-75 in St. Ignace, MI: 1926: current Western segment US 2: 460: 740 US 11 in Rouses Point, NY: I-95 in Houlton, ME: 1926: current Eastern segment US 3: 273: 439 Route 2A/Route 3 in Cambridge
The first stack interchange in the world was the Four Level Interchange (renamed the Bill Keene Memorial Interchange), built in Los Angeles, California, and completed in 1949, at the junction of U.S. Route 101 and State Route 110. [3]
U.S. Route 101 (US 101) is a major north–south United States Numbered Highway, stretching from Los Angeles, California, to Tumwater, Washington.The California portion of US 101 is one of the last remaining and longest U.S. Routes still active in the state, and the longest highway of any kind in California. [8]