South Dakota Highway 407

South Dakota Highway 407 (SD 407) is a 1.786-mile (2.874 km) state highway on the southern edge of Oglala Lakota County,[Note 1] South Dakota, United States. Along with Nebraska Highway 87 (N‑87), SD 407 serves as a connector route between U.S. Route 20 (US 20) in Rushville, Nebraska and U.S. Route 18 (US 18) in Pine Ridge.

Highway 407
Route information
Maintained by SDDOT
Length1.786 mi[1] (2.874 km)
Existed1975–present
Major junctions
South end N-87 south of Pine Ridge
North end US 18/BIA Rd. 32 in Pine Ridge
Location
CountiesOglala Lakota[Note 1]
Highway system
  • South Dakota Highways
← SD 391→ SD 437

Route description
Welcome to South Dakota and Oglala Lakota Nation signs along SD 407, August 2017

SD 407 begins at the northern terminus of N‑87 (at 790 Road) on the Nebraska–South Dakota border, south of the community of Pine Ridge (a census-designated place [CDP]), and is entirely within the Pine Ridge Indian Reservation. (N‑87 continues southerly in Nebraska, through the CDP of White Clay, and on toward its southern terminus at US 20 in Rushville.)

From its southern terminus SD 407 heads north along the eastern edge of, and then into, Pine Ridge. A few blocks after entering the main part of the community SD 407 reaches its northern terminus at an intersection with US 18 and BIA Route 32 (BIA Rd. 32). From the northern terminus of SD 407, US 18 heads easterly to Martin and Mission and northerly to Oglala and Hot Springs. BIA Rd. 32 heads westerly to terminate at BIA Route 41.[3][4] On average, SD 407 is driven by over 4,200 vehicles per day.[1]

Major intersections

The entire route is in Oglala Lakota County. [4][Note 1]

Location[4][Note 1]mi[1]kmDestinationsNotes
White Clay0.0000.000 N-87 south – Rushville, US 20Continuation south into Nebraska from southern terminus
​ N-87 / 790 Road at Nebraska state lineSouthern terminus of SD 407
Pine Ridge1.7862.874 US 18 / BIA Rd. 32 (Main Street) – Martin, MissionNorthern terminus of SD 407; eastern terminus of BIA Rd. 32
US 18 north – Oglala, Hot SpringsContinuation north beyond northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

Notes
  1. Prior to 2015, Oglala Lakota County was known as Shannon County.[2]

References
  1. "Rapid City Region Highway Log" (PDF). dot.sd.gov. South Dakota Department of Transportation. 27 Feb 2019. p. 148. Retrieved 21 Oct 2019.
  2. "Oglala Lakota County, South Dakota". oglalalakota.sdcounties.org. Oglala Lakota County]]. Retrieved 22 Oct 2019.
  3. General Highway Map (Map). South Half Shannon County. South Dakota Department of Transportation. 2010. Retrieved 20 Dec 2011.
  4. Google (21 Oct 2019). "SD-407, West Oglala Lakota, SD 57770" (Map). Google Maps. Google. Retrieved 21 Oct 2019.

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