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South Dakota Highway 79 (SD 79) is a 209-mile-long (336 km) state highway in the U.S. state of South Dakota. It runs from Maverick Junction near the Black Hills National Forest to the North Dakota state line.

Highway 79 marker

Highway 79
Route information
Maintained by SDDOT
Length209 mi[1] (336 km)
Major junctions
South end US 18 / US 385 at Maverick Junction
North end ND 22 at the North Dakota state line, south of Reeder, ND
CountiesFall River, Custer, Pennington, Meade, Butte, Harding
Highway system
  • South Dakota Highways
SD 75SD 85

Route descriptionEdit

SD 79's southern terminus is at Maverick Junction near Hot Springs, where it meets US 18 and US 385. SD 79 runs east of the Black Hills to Rapid City, where it is Main Street downtown. The road continues north and runs concurrently with US 14 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.

Major intersectionsEdit

Fall RiverMaverick Junction0.00.0   US 18 / US 385 – Hot Springs, Oelrichs, Edgemont
Custer32.051.5  SD 36 west – Custer, Custer State Park, Crazy Horse, Mount Rushmore
Hermosa32.852.8  SD 40 west – KeystoneSouthern end of SD 40 overlap
33.053.1  SD 40 east – HermosaNorthern end of SD 40 overlap
PenningtonRapid City50.481.1 
  US 16 Truck west
Southern end of US 16 Truck overlap; single point urban interchange (SPUI)
53.285.6   SD 44 – Rapid City
    I-90 east / US 14 east / US 16 Truck ends – Sioux Falls
Northern end of US 16 Truck overlap; southern end of I-90 / US 14 overlap; SPUI
57.392.260  I-90 Bus. west (North Street) – Rapid CitySPUI
58.694.359La Crosse Street – Rapid City
59.595.858Haines Avenue – Rapid CitySPUI
60.196.757   I-190 south / US 16 west – Rapid City, Mount Rushmore, Black Hills National ForestTrumpet interchange; I-190 exits 1A–B
62.2100.155Deadwood Avenue – Rapid City
MeadeBlack Hawk65.4105.352  I-90 Bus. east (Peaceful Pines Road) – Black Hawk, Rapid City
Summerset69.4111.748Stagebarn Canyon Road – Summerset
Piedmont71.7115.446Elk Creek Road – Piedmont, Summerset
73.2117.844Bethlehem Road – Piedmont
Tilford77.6124.940Tilford Road, Bethlehem Road – Tilford
80.8130.037Pleasant Valley Road
83.0133.634Black Hills National Cemetery
Sturgis85.4137.432  I-90 Bus. west (Junction Avenue) – Sturgis
87.5140.830      I-90 west / US 14 west / I-90 Bus. begins / US 14A west / SD 34 west – Sturgis, Deadwood, Lead, GilletteNorthern end of I-90 / US 14 overlap; southern end of SD 34 overlap
92.4148.7  SD 34 east – Union CenterNorthern end of SD 34 overlap
Butte111.2179.0  US 212 west – Belle FourcheSouthern end of US 212 overlap
Newell114.2183.8  US 212 east – Mud Butte, FaithNorthern end of US 212 overlap
131.6211.8   SD 168 to US 85
Harding180.5290.5  SD 20 west – BuffaloSouthern end of SD 20 overlap
184.9297.6  SD 20 east – Prairie City, BisonNorthern end of SD 20 overlap
213.7343.9  ND 22 north – ReederContinuation into North Dakota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi