South Dakota Highway 79

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Highway 79

Map
     SD 79
Route information
Defined by SDCL §31-4-%section%
Maintained by SDDOT
Length241.115 mi[1] (388.037 km)
Major junctions
South end US 385 at the Nebraska state line northwest of Chadron
North end ND 22 at the North Dakota state line south of Reeder
Location
CountryUnited States
StateSouth Dakota
Counties
Highway system
  • South Dakota State Trunk Highway System
SD 75 US 85

South Dakota Highway 79 (SD 79) is a 241.115-mile (388.037 km) state highway in western South Dakota, United States, that runs along the western tier of the state from the Nebraska state line in the south to the North Dakota state line in the north.

Route description

SD 79's southern terminus is at the Nebraska state line south of Oelrichs. The route runs concurrently with U.S. Route 385 (US 385) and then with US 18 for a total of 30 miles (48 km) before splitting onto its own roadway at Maverick Junction, just southeast of Hot Springs. SD 79 runs east of the Black Hills to Rapid City, where it joins US Route 16 Truck Bypass around the east side of Rapid City up to Interstate 90. The road continues north and runs concurrently with US 14 and Interstate 90 westbound toward Sturgis. Leaving Sturgis, SD 79 leads to Bear Butte State Park and briefly runs concurrently with U.S. Route 212 south of Newell. Near North Dakota, the highway passes through the South Dakota portion of Custer National Forest. SD 79 then joins SD 20 for a short concurrent run, and finally turns northward until it reaches North Dakota, where its roadway continues north as North Dakota Highway 22.

Major intersections

CountyLocationmi[1]kmExitDestinationsNotes
Dawes0.0000.000
US 385 south
Southern end of US 385 concurrency; US 385 continues south into Nebraska
Fall RiverOelrichs13.08221.053
US 18 east – Pine Ridge, Wounded Knee
Southern end of US 18 concurrency
Maverick Junction30.06048.377

US 18 west / US 385 north – Hot Springs, Edgemont
Northern end of US 18/US 385 concurrency
Custer62.839–
62.946
101.130–
101.302

SD 36 west – Custer, Custer State Park, Crazy Horse, Mount Rushmore
Eastern terminus of SD 36
Hermosa63.618102.383
SD 40 west – Keystone
Southern end of SD 40 concurrency
63.830102.724
SD 40 east (Main Street) – Hermosa
Northern end of SD 40 concurrency
PenningtonRapid City77.630–
78.040
124.933–
125.593


US 16 Truck west
Southern end of US 16 Truck concurrency; single point urban interchange (SPUI)
80.294–
80.573
129.221–
129.670
SD 44 – Rapid CityFolded diamond interchange
83.304–
83.740
134.065–
134.766
61



I-90 east / US 14 east / US 16 Truck ends – Sioux Falls
Northern end of US 16 Truck concurrency; southern end of I-90/US 14 concurrency; SPUI
84.441–
85.145
135.895–
137.028
60
I-90 BL west (North Street) – Rapid City
SPUI
85.850–
86.304
138.162–
138.893
59La Crosse Street – Rapid CityDiverging diamond interchange
86.709–
87.216
139.545–
140.361
58Haines Avenue – Rapid CitySPUI
87.514–
88.027
140.840–
141.666
57

I-190 south / US 16 west – Rapid City, Mount Rushmore, Black Hills National Forest
Trumpet interchange; I-190 exits 1A–B
89.424–
89.875
143.914–
144.640
55Deadwood Avenue – Rapid CityNorthern terminus of unsigned SD 445
MeadeBlack Hawk92.513–
93.381
148.885–
150.282
52
I-90 BL east (Peaceful Pines Road) – Black Hawk, Rapid City
Summerset96.589–
97.128
155.445–
156.312
48Stagebarn Canyon Road – Summerset
Piedmont98.935–
99.325
159.220–
159.848
46Elk Creek Road – Piedmont, Summerset
100.470–
100.910
161.691–
162.399
44Bethlehem Road – Piedmont
Tilford104.800–
105.413
168.659–
169.646
40Tilford Road, Bethlehem Road – Tilford
108.105–
108.579
173.978–
174.741
37Pleasant Valley Road
110.336–
110.811
177.569–
178.333
34Black Hills National Cemetery
Sturgis112.643–
113.182
181.281–
182.149
32
I-90 BL west (Junction Avenue) – Sturgis
114.967–
115.153
185.021–
185.321
30




I-90 west / US 14 west / I-90 BL begins / US 14A west / SD 34 west – Sturgis, Deadwood, Lead, Gillette
Northern end of I-90/US 14 concurrency; western end of SD 34/I-90 Bus. concurrency
116.347187.242
I-90 BL east (Junction Avenue)
Eastern end of I-90 Bus. concurrency
120.042–
120.107
193.189–
193.293

SD 34 east – Union Center
Northern end of SD 34 concurrency
Butte138.895223.530
US 212 west – Belle Fourche
Southern end of US 212 concurrency
Newell141.894228.356
US 212 east (8th Street) – Mud Butte, Faith
Northern end of US 212 concurrency
159.561256.789
SD 168 to US 85
Harding208.108334.917
SD 20 west – Buffalo
Southern end of SD 20 concurrency
212.561342.084
SD 20 east – Prairie City, Bison
Northern end of SD 20 concurrency
Adams241.115388.037
ND 22 north – Reeder
Northern terminus; continuation into North Dakota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. ^ a b "State Highway Log: Rapid City Region" (PDF). South Dakota Department of Transportation. January 2023. Retrieved September 16, 2023.

External links

Media related to South Dakota Highway 79 at Wikimedia Commons