Interstate 90 in South Dakota

This article is about the section of Interstate 90 in South Dakota. For the entire route, see Interstate 90.

Interstate 90 marker

Interstate 90
Route information
Defined by SDCL §31-4-184
Maintained by SDDOT
Length: 412.76 mi[1] (664.27 km)
Major junctions
West end: I-90 / US 14 at Wyoming state line
  I-190 / US 16 in Rapid City
I-29 in Sioux Falls
I-229 in Sioux Falls
East end: I-90 at Minnesota state line
Highway system

South Dakota Highways

SD 89SD 101

In the U.S. state of South Dakota, Interstate 90 traverses eastwest through the southern half of the state.

Route description

Interstate 90 enters South Dakota in Lawrence County as a four-lane divided highway. It enters concurrently with U.S. Route 14, and passes through the town of Spearfish, where it shares another concurrency with U.S. Route 85 from exit 10 to exit 17. From there it passes several miles north and east of the tourist town of Deadwood before entering Meade County, going just to the west of Sturgis. Another concurrency is with South Dakota Highway 34 from exit 23 at Whitewood to exit 30, the west exit of Sturgis, where there starts a concurrency with SD 79. The freeway generally passes along the north and east edges of the Black Hills.

The route then enters Pennington County, where it passes through the northern edge of Rapid City, gateway to the Black Hills and the nearest passing to Mount Rushmore National Memorial, as well as other scenic attractions including Custer State Park and the Needles Highway. Rapid City is also where the interstate has its westernmost auxiliary route, Interstate 190, which links the interstate to the western edge of the downtown area. SD 79's concurrency ends at exit 61 on the east side of the city. From Rapid City, the route heads east, passing between Box Elder to the south and Ellsworth Air Force Base to the north before heading towards Wall on to Jackson County. Exits 110 and 131 for Badlands National Park to the south (SD 240) are within 15 miles (24 km) either way of the county line. The concurrency for US-14 ends at exit 112 just east of Wall; here US-14 runs due east and will connect to the city of Philip and the capital city of Pierre.

The Lake Francis Case portion of the Missouri River viewed from a rest stop just south of Chamberlain; the pre-interstate Chamberlain Bridge is in the center.

From there, the route passes mostly east-west through Jackson and Jones counties. There are short concurrencies with SD 73 (from the west entering Kadoka) and SD 63 in Jackson County. Interstate 90 crosses the Central Time/Mountain Time Zone boundary on the west edge of Jones County. Then at Murdo, a concurrency begins with U.S. Route 83 at exit 192 and continues to exit 212. It is in Lyman County, at exit 212 in Vivian, that the highway provides its closest link to the capital of Pierre, along US-83, some 35 miles (56 km) north. The road crosses the Missouri River at Lake Francis Case, between the towns of Oacoma and Chamberlain, also crossing into Brule County. I-90 Business Loop runs from exit 260 at Oacoma to downtown Chamberlain across the Missouri River on the nearby Chamberlain Bridge, and returns to I-90 at exit 265. Beginning there is a short concurrency with SD 50 heading to Pukwana, and also in Brule County is another short concurrency with SD 45 starting at Kimball.

I-90 then continues through Aurora County (connecting to White Lake and Plankinton), Davison County (where Mt. Vernon, Mitchell and the Corn Palace are located), Hanson County (Alexandria), and McCook County (Salem). Then comes the state's most populous county, Minnehaha. After passing the communities of Humboldt and Hartford, the interstate intersects the only other major interstate in the state, Interstate 29, at Sioux Falls, the largest city. Just east of Interstate 29 is where Interstate 90 meets the northern terminus of Interstate 229. East of Brandon and northeast of Valley Springs, it then ends its trip through South Dakota of 412 miles (663 km) before entering Minnesota and Rock County, just west of the towns of Beaver Creek and Manley.

Since April 2015 the speed limit is 80 miles per hour (130 km/h), except it is 65 miles per hour (105 km/h) between I-229 and Marion Road in Sioux Falls; or through Rapid City. The speed limit remains 75 miles per hour (121 km/h) between Rapid City and the Wyoming state line.

Codified law

The South Dakota section of I-90 is defined at South Dakota Codified Laws § 31-4-184.[2]

History

Removal of exit 66

An older version of the I-90 shield as used in South Dakota, still commonly seen along the route

In the city of Box Elder, exit 66, which crossed South Dakota Highway 435, was closed on October 1, 2003. The partial cloverleaf interchange of exit 66 was also demolished. Since the closure, local citizens and officials feared the lack of entrances which access the Ellsworth Air Force Base. However, the move was made to emphasize their concerns regarding to commercial development and its concisions with the Ellsworth forces. Exit 67, which was constructed not too long before the closure of exit 66, is now used as the main entrance and exit feeder to the base.[3]

Exit list

CountyLocationmi[4]kmExitDestinationsNotes
Lawrence 0.000.00 I-90 west / US 14 west GilletteContinuation into Wyoming
 2.253.622McNenny State Fish Hatchery
Spearfish8.9614.428McGuigan Road  Spearfish, Black Hills National Forest
10.2616.5110 I-90 Bus. east / US 85 north / North Avenue Spearfish, Belle FourcheWest end of US 85 concurrency
12.3219.8312Jackson Boulevard  Spearfish, Black Hills State University
14.4223.2114 I-90 Bus. west / US 14A east / 27th Street Spearfish, Spearfish Canyon Scenic Byway, Black Hills National Forest
 18.1629.2317 US 85 south Deadwood, LeadEast end of US 85 concurrency
Whitewood23.7338.1923 SD 34 west Whitewood, Belle FourcheWest end of SD 34 concurrency
MeadeSturgis30.2848.7330 I-90 Bus. east / SD 34 east / SD 79 north / US 14A west / Lazelle Street Sturgis, Deadwood, LeadEast end of SD 34 concurrency
West end of SD 79 concurrency
32.4152.1632 I-90 Bus. west / Junction Avenue Sturgis
 34.8156.0234Black Hills National Cemetery
 37.0159.5637Pleasant Valley Road
Tilford40.2064.7040Tilford Road, Bethlehem Road  Tilford
Piedmont44.6671.8744Bethlehem Road  Piedmont
46.1474.2646Elk Creek Road  Piedmont, Summerset
Summerset48.4377.9448Stagebarn Canyon Road  Summerset
Black Hawk52.3884.3052 I-90 Bus. east / Peaceful Pines Road Black Hawk, Rapid City
PenningtonRapid City55.6689.5855Deadwood Avenue  Rapid City
57.7692.9657 I-190 south / US 16 west Rapid City, Mount Rushmore, Black Hills National ForestTrumpet interchange, I-190/US 16 exits 1A-B
58.3193.8458Haines Avenue  Rapid CitySingle-point urban interchange (SPUI)
59.1995.2659La Crosse Street  Rapid City
60.4897.3360 I-90 Bus. west / East North Street Rapid CitySPUI
61.8499.5261
US 16 Truck / SD 79 south Rapid City, Mount Rushmore, Crazy Horse
East end of SD 79 concurrency; SPUI
Box Elder63.42102.0663Box Elder, Ellsworth AFB Commercial GateEastbound exit and westbound entrance
66.17106.4966 SD 435 Ellsworth AFBClosed October 1, 2003[5]
67.15108.0767Liberty Boulevard  Box Elder, Ellsworth AFB Main GateSigned as exits 67A (south) and 67B (north) eastbound, Parclo interchange
New Underwood78.29126.0078161st Avenue  New Underwood
 84.24135.5784 CR 497 / 167th Avenue
 88.23141.9988171st AvenueEastbound exit and westbound entrance
 90.25145.2490173rd Avenue
Wasta98.14157.9498Base Line Road  WastaParclo interchange
 101.23162.91101CR T-405 / Jensen RoadParclo interchange
 107.85173.57107Cedar Butte Road
Wall109.82176.74109 I-90 Bus. east / W. 4th Avenue Wall
110.98178.60110 I-90 Bus. west / SD 240 east / Glenn Street, Badlands Loop Wall, Badlands
 112.01180.26112 US 14 east Philip, PierreEast end of US 14 concurrency, trumpet interchange
 116.94188.20116239th Street
 121.98196.31121Big Foot Road
Jackson 127.75205.59127(no name)
 131.26211.24131 SD 240 west / Badlands Loop Interior, Badlands
 143.29230.60143 SD 73 north PhilipWest end of SD 73 concurrency
Kadoka150.20241.72150 I-90 Bus. east / SD 73 south KadokaEast end of SD 73 concurrency
152.42245.30152 I-90 Bus. west / South Creek Road Kadoka
Belvidere163.03262.37163 SD 63 south BelvidereWest end of SD 63 concurrency
 170.31274.09170 SD 63 north MidlandEast end of SD 63 concurrency
 172.50277.61172(no name)
Jones 177.48285.63177(no name)
Okaton183.48295.28183Okaton
Murdo191.14307.61191 I-90 Bus. east Murdo
192.64310.02192 I-90 Bus. west / US 83 south Murdo, White RiverWest end of US 83 concurrency
Draper201.13323.69201Draper
 208.11334.92208(no name)
Lyman 212.80342.47212 US 83 north / SD 53 Pierre, Fort PierreEast end of US 83 concurrency
Vivian214.25344.80214Vivian
 220.31354.55220(no name)
Presho225.38362.71225 I-90 Bus. east Presho
226.39364.34226 I-90 Bus. west / US 183 south Presho, Winner
Kennebec235.42378.87235 SD 273 north Kennebec
 241.90389.30241(no name)
Reliance248.77400.36248 To SD 47 north RelianceActual SD 47 route runs parallel to the north along I-90 between Exit 248 and Exit 251 and does not connect to this interchange
 251.08404.07251 SD 47 south Gregory, WinnerActual SD 47 route intersects I-90 at this interchange
Oacoma260.47419.19260 I-90 Bus. east / Dougan Avenue Oacoma, Chamberlain
Missouri River262.22422.00Lake Francis Case
BruleChamberlain263.53424.11263S. Main Street  ChamberlainParclo interchange
265.85427.84265 I-90 Bus. west / SD 50 west / E. King Street ChamberlainWest end of SD 50 concurrency
Pukwana272.63438.76272 SD 50 east PukwanaEast end of SD 50 concurrency
Kimball284.05457.13284 SD 45 north KimballWest end of SD 45 concurrency
 289.22465.45289 SD 45 south PlatteEast end of SD 45 concurrency
AuroraWhite Lake296.68477.46296White Lake
Plankinton308.25496.08308Plankinton
 310.48499.67310 US 281 Stickney, Aberdeen, Huron
DavisonMount Vernon319.43514.07319Mount Vernon
 325.42523.71325Betts Road
Mitchell330.41531.74330 I-90 Bus. east / SD 37 north / S. Ohlman Street Mitchell, HuronWest end of SD 37 concurrency
332.17534.58332 I-90 Bus. west / SD 37 south / S. Burr Street Mitchell, ParkstonEast end of SD 37 concurrency
Hanson 335.42539.81335Riverside Road
Alexandria344.01553.63344 SD 262 east Fulton, Alexandria
 350.05563.35350 SD 25 Emery, Farmer
McCook 353.98569.68353Spencer, Emery
 357.99576.13357Bridgewater, Canova
Salem364.01585.82364 US 81 Salem, Yankton, Madison
 368.05592.32368Canistota
 374.02601.93374Montrose
MinnehahaHumboldt379.63610.96379 SD 19 Humboldt, Madison
Hartford387.46623.56387Hartford
390.21627.98390 SD 38 Hartford, Buffalo RidgeParclo interchange
Sioux Falls395.46636.43395Marion Road  Sioux FallsParclo interchange
396.52638.14396 I-29 Fargo, Sioux CitySigned as exits 396A (southbound) and 396B (northbound); cloverleaf interchange; I-29 exits 84A-B
399.54643.00399 I-90 Bus. / SD 115 north / Cliff Avenue Sioux Falls, Sioux Falls Regional Airport, RennerBusiness Spur 90; SPUI
400.58644.67400 I-229 south Sioux FallsHalf-clover interchange, I-229 north exits 10A-B; no access from 229 south to 90, nor from 90 to CR 125 north
 402.55647.84402U.S. Geological Survey, EROS Data Center
Brandon406.54654.26406 SD 11 / Splitrock Boulevard Brandon, Corson
Valley Springs410.57660.75410Valley Springs, Garretson
 412.76664.27 I-90 east Albert LeaContinuation into Minnesota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

Route map: Bing / Google

Interstate 90
Previous state:
Wyoming
South Dakota Next state:
Minnesota
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