U.S. Route 380

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "U.S. Route 380" – news · newspapers · books · scholar · JSTOR (August 2019) (Learn how and when to remove this message)

U.S. Route 380
US 380 highlighted in red
Route information
Auxiliary route of US 80
Maintained by NMDOT and TxDOT
Length	673 mi (1,083 km)
Existed	1931[1]–present
History	1926–1931: US 566
Major junctions
West end	I-25 / US 85 in San Antonio, NM
Major intersections	US 54 in Carrizozo, NM US 70 in Roswell, NM US 285 in Roswell, NM US 87 in Tahoka, TX US 281 in Jacksboro, TX US 81 / US 287 in Decatur, TX I-35 in Denton, TX US 77 / US 377 in Denton, TX Dallas North Tollway in Frisco, TX US 75 in McKinney, TX
East end	I-30 / US 67 / US 69 in Greenville, TX
Location
Country	United States
States	New Mexico, Texas
Highway system
United States Numbered Highway System List Special Divided

U.S. Route 380 (US 380) is an east–west United States highway. The highway's eastern terminus is in Greenville, Texas at an intersection with Interstate 30, of which the easternmost 3–4 miles are concurrent with US 69 in a loop around the west and south sides of Greenville. Its western terminus is at San Antonio, New Mexico, south of Socorro at an intersection with Interstate 25. It intersected with its parent, U.S. Route 80, at Cisco until 1971, when it was rerouted along the former SH 24 from that highway's western terminus near Old Glory to Greenville. Former U.S. Route 380 from Cisco to near Old Glory became an extension of SH 6. The highway no longer connects to any x80 route. US 380 passes through some of the far northern suburbs of the Dallas/Fort Worth Metroplex, including (from west to east) Denton, Frisco, McKinney and Princeton. The portion in Texas from the New Mexico state line to Jayton was SH 84 before 1939. Its spur, SH 84A, went from Jayton to Aspermont, until 1930, when it became SH 161.