Encyclopedia Dubuque
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Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
U. S. 20: Difference between revisions
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[[Image:us20.png|left|thumb| | [[Image:us20.png|left|thumb|250px|The path of U. S. 20 through Dubuque took the road along Locust and then up the hills of Dubuque along Loras.]]U. S. 20 U.S. Route 20 or U.S. Highway 20 (US 20) is an east–west United States highway stretching from the Pacific Northwest to New England. 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. The route is roughly parallel to that of the newer Interstate 90 (I-90), which is in turn the longest Interstate Highway in the U.S. There is a discontinuity in the official designation of US 20 through Yellowstone National Park, with unnumbered roads used to traverse the park. | ||
US 20 and US 30 break the general U.S. Route numbering rules in Oregon, since US 30 actually starts north of US 20 in Astoria, and runs parallel to the north throughout the state (the Columbia River and Interstate 84). The two highways run concurrently and continue in the correct positioning near Caldwell, Idaho. This is because US 20 was not a planned coast-to-coast route. US 20 originally ended at the eastern entrance of Yellowstone Park; it was extended in 1940. | US 20 and US 30 break the general U.S. Route numbering rules in Oregon, since US 30 actually starts north of US 20 in Astoria, and runs parallel to the north throughout the state (the Columbia River and Interstate 84). The two highways run concurrently and continue in the correct positioning near Caldwell, Idaho. This is because US 20 was not a planned coast-to-coast route. US 20 originally ended at the eastern entrance of Yellowstone Park; it was extended in 1940. | ||
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"U. S. Route 20," Wikipedia, Online: https://en.wikipedia.org/wiki/U.S._Route_20 | "U. S. Route 20," Wikipedia, Online: https://en.wikipedia.org/wiki/U.S._Route_20 | ||
[[Category: | [[Category: Transportation]] | ||
Latest revision as of 22:24, 28 March 2021
U. S. 20 U.S. Route 20 or U.S. Highway 20 (US 20) is an east–west United States highway stretching from the Pacific Northwest to New England. 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. The route is roughly parallel to that of the newer Interstate 90 (I-90), which is in turn the longest Interstate Highway in the U.S. There is a discontinuity in the official designation of US 20 through Yellowstone National Park, with unnumbered roads used to traverse the park.
US 20 and US 30 break the general U.S. Route numbering rules in Oregon, since US 30 actually starts north of US 20 in Astoria, and runs parallel to the north throughout the state (the Columbia River and Interstate 84). The two highways run concurrently and continue in the correct positioning near Caldwell, Idaho. This is because US 20 was not a planned coast-to-coast route. US 20 originally ended at the eastern entrance of Yellowstone Park; it was extended in 1940.
The highway's eastern terminus is in Boston, Massachusetts, at Kenmore Square, where it meets Route 2. Its western terminus is in Newport, Oregon, at an intersection with US 101, within a mile of the Pacific Ocean.
Signage for the original route of U. S. 20 through Dubuque has been added in the city.
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Source:
"U. S. Route 20," Wikipedia, Online: https://en.wikipedia.org/wiki/U.S._Route_20