Portal:U.S. Roads
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Portal:U.S. Roads
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The U.S. Roads Portal

The highway system of the United States is a network of interconnected state, U.S., and Interstate highways. Each of the fifty states, the District of Columbia, Puerto Rico, American Samoa, Guam, and the U.S. Virgin Islands own and maintain a part of this vast system, including U.S. and Interstate highways, which are not owned or maintained at the federal level.

Interstate Highways have the highest speed limits and the highest traffic. Interstates are numbered in a grid: even-numbered routes for east-west routes (with the lowest numbers along Mexico and the Gulf of Mexico), and odd-numbered routes are north-south routes (with the lowest numbers along the Pacific Ocean). Three-digit Interstates are, generally, either beltways or spurs of their parent Interstates (for example, Interstate 510 is a spur into the city of New Orleans, Louisiana, and is connected to Interstate 10).

U.S. Numbered Highways are the original interstate highways, dating back to 1926. U.S. Highways are also numbered in a grid: even numbered for east-west routes (with the lowest numbers along Canada) and odd numbered for north-south routes (with the lowest numbers along the Atlantic Ocean). Three-digit highways, also known as "child routes," are branches off their main one- or two-digit "parents" (for example, U.S. Route 202 is a branch of U.S. Route 2). However, US 101, rather than a "child" of US 1, is considered a "mainline" U.S. Route.

State highways are the next level in the hierarchy. Each state and territory has its own system for numbering highways, some more systematic than others. Each state also has its own design for its highway markers; the number in a circle is the default sign, but many choose a different design connected to the state, such as an outline of the state with the number inside. Many states also operate a system of county highways.

National Forest Scenic Byway marker

Scenic byways can be designated over any classification of road in the United States. There are the National Scenic Byways, National Forest Scenic Byways and Bureau of Land Management Back Country Byways at the national level. Most states have their own system for designating byways, some more systematic than others. Indian tribes may designate byways as well.

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I-496 at Martin Luther King Boulevard

Interstate 496 (I-496) is an auxiliary Interstate Highway that passes through downtown Lansing. The loop route runs east from I-96 to the downtown area, turning south concurrently with US 127. It passes a former assembly plant used by Oldsmobile and runs along or crosses parts of the Grand and Red Cedar rivers. Construction started in 1963, and the freeway opened on December 18, 1970. Segments south of downtown were built near a historically black neighborhood that dates from the early 20th century. Community leaders opted not to fight the construction of the freeway, instead seeking affordable housing and relocation assistance for displaced residents. The city named the freeway in honor of a former mayor when it opened in 1970, but the local historical society proposed that the state rename it after Ransom E. Olds, the founder of Oldsmobile and the REO Motor Car Company, after his mansion was demolished to make way for the freeway. The Michigan Legislature approved the name "Olds Freeway" two years later.

Recently selected: Pennsylvania Route 97 (Adams County) • Interstate 495 (Delaware) • Interstate 469

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Sign at western origin of US 20 in Newport, Oregon


U.S. Roads news


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Nominations and votes for selected articles and selected pictures are always needed. Anyone can nominate an article, and anyone can vote for an article. You can also recommend items for Did you know?. If you have news related to U.S. roads, you can add it to the news section above.

See also popflock.com Resource: WikiProject U.S. Roads/to do, Category:U.S. road articles needing attention and individual state highway project to-do lists.

Related portals

Numbered highways in the United States

References and notes

  1. ^ Munsun, Jeff (October 3, 2019). "Exit numbers to change on Carson City Freeway beginning this weekend". Carson Now. Retrieved 2019.
  2. ^ Marusak, Joe (May 31, 2019). "First part of I-77 toll lanes finally opened Saturday. Here's what you need to know". The Charlotte Observer. Retrieved 2019.
  3. ^ Lindblom, Mike (February 4, 2019). "New tunnel? No problem? It was an easy, light-traffic day Monday on Highway 99". The Seattle Times. Retrieved 2019.
  4. ^ Smith, Jerry (January 10, 2019). "U.S. 301 Mainline toll road opens Thursday to cheers and jeers". The News Journal. Wilmington, DE. Retrieved 2019.
  5. ^ "Route 219 extension opens". The Tribune-Democrat. Johnstown, PA. November 21, 2018. Retrieved 2018.
  6. ^ Campbell, LouAnna (November 7, 2018). "Lindale relief route open, Toll 49 extended from I-20 to US Highway 69, north of Lindale". Tyler Morning Telegraph. Retrieved 2019.
  7. ^ "Hogan Administration Announces Long-Awaited US 219 Realignment Construction Project in Garrett County" (Press release). Maryland State Highway Administration. October 13, 2018. Retrieved 2018.
  8. ^ Sofield, Tom (September 22, 2018). "Decades in the Making, I-95, Turnpike Connector Opens to Motorists". Levittown Now. Retrieved 2018.
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  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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