U.S. Route 666

former U.S. Numbered Highway in New Mexico, Colorado, and Utah in the United States
Place road Q72328153
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Summary

U.S. Route 666 is a road[1].

Key Facts

  • Located in the administrative territorial entity: Arizona[2], New Mexico[3], Colorado[4], Utah[5]
  • Country: United States[6]
  • Transport network: United States Numbered Highway System[7], numbered highways in Arizona[8], state highways in New Mexico[9], numbered highways in Colorado[10], Utah State Routes[11]
  • Maintained by: Arizona Department of Transportation[12], New Mexico Department of Transportation[13], Colorado Department of Transportation[14], Utah Department of Transportation[15]
  • Owned by: Arizona Department of Transportation[16], New Mexico Department of Transportation[17], Colorado Department of Transportation[18], Utah Department of Transportation[19]
  • Has part(s): U.S. Route 666 in New Mexico[20], U.S. Route 666 in Colorado[21], U.S. Route 666 in Utah[22]

Body

Geography

Located in include Arizona[2], an U.S. state[23], in United States[24], founded in 1912[25]; New Mexico[3], an U.S. state[26], in United States[27], founded in 1912[28], headquartered in Santa Fe[29]; Colorado[4], an U.S. state[30], in United States[31], founded in 1876[32]; and Utah[5], an U.S. state[33], in United States[34], founded in 1896[35].

Physical Characteristics

U.S. Route 666's length is recorded as 193.930 miles[36].

History and Context

Owners include Arizona Department of Transportation[16], a state department of transportation of the United States[37], in United States[38], founded in 1974[39], headquartered in Phoenix[40]; New Mexico Department of Transportation[17], a state department of transportation of the United States[41], in United States[42], headquartered in Santa Fe[43]; Colorado Department of Transportation[18], a state department of transportation of the United States[44], in United States[45], founded in 1917[46]; and Utah Department of Transportation[19], a state department of transportation of the United States[47], in United States[48], founded in 1975[49], headquartered in Taylorsville[50].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [7] ↑ . wikidata.org.
  2. [8] ↑ . wikidata.org.
  3. [9] ↑ . wikidata.org.
  4. [10] ↑ . wikidata.org.
  5. [11] ↑ . wikidata.org.
  6. [6] ↑ . wikidata.org.
  7. [12] ↑ . wikidata.org.
  8. [13] ↑ . wikidata.org.
  9. [14] ↑ . wikidata.org.
  10. [15] ↑ . wikidata.org.
  11. [16] ↑ . wikidata.org.
  12. [17] ↑ . wikidata.org.
  13. [18] ↑ . wikidata.org.
  14. [19] ↑ . wikidata.org.
  15. [2] ↑ . wikidata.org.
  16. [3] ↑ . wikidata.org.
  17. [4] ↑ . wikidata.org.
  18. [5] ↑ . wikidata.org.
  19. [20] ↑ . wikidata.org.
  20. [21] ↑ . wikidata.org.
  21. [22] ↑ . wikidata.org.
  22. [36] ↑ . wikidata.org.

Inline context (facts about related entities)

  1. [37] ↑ . Wikidata. wikidata.org. → on this site
  2. [38] ↑ . Wikidata. wikidata.org. → on this site
  3. [39] ↑ . Wikidata. wikidata.org. → on this site
  4. [40] ↑ . Wikidata. wikidata.org. → on this site
  5. [41] ↑ . Wikidata. wikidata.org. → on this site
  6. [42] ↑ . Wikidata. wikidata.org. → on this site
  7. [43] ↑ . Wikidata. wikidata.org. → on this site
  8. [44] ↑ . Wikidata. wikidata.org. → on this site
  9. [45] ↑ . Wikidata. wikidata.org. → on this site
  10. [46] ↑ . Wikidata. wikidata.org. → on this site
  11. [47] ↑ . Wikidata. wikidata.org. → on this site
  12. [48] ↑ . Wikidata. wikidata.org. → on this site
  13. [49] ↑ . Wikidata. wikidata.org. → on this site
  14. [50] ↑ . Wikidata. wikidata.org. → on this site
  15. [23] ↑ . Wikidata. wikidata.org. → on this site
  16. [24] ↑ . Wikidata. wikidata.org. → on this site
  17. [25] ↑ . Wikidata. wikidata.org. → on this site
  18. [26] ↑ . Wikidata. wikidata.org. → on this site
  19. [27] ↑ . Wikidata. wikidata.org. → on this site
  20. [28] ↑ . Wikidata. wikidata.org. → on this site
  21. [29] ↑ . Wikidata. wikidata.org. → on this site
  22. [30] ↑ . Wikidata. wikidata.org. → on this site
  23. [31] ↑ . Wikidata. wikidata.org. → on this site
  24. [32] ↑ . Wikidata. wikidata.org. → on this site
  25. [33] ↑ . Wikidata. wikidata.org. → on this site
  26. [34] ↑ . Wikidata. wikidata.org. → on this site
  27. [35] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

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Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). U.S. Route 666. Retrieved May 3, 2026, from https://4ort.xyz/entity/u-s-route-666
MLA “U.S. Route 666.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/u-s-route-666.
BibTeX @misc{4ortxyz_u-s-route-666_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{U.S. Route 666}}, year = {2026}, url = {https://4ort.xyz/entity/u-s-route-666}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): U.S. Route 666 — https://4ort.xyz/entity/u-s-route-666 (retrieved 2026-05-03)

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