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U.S. Route 12 in South Dakota

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This article is about the section of U.S. Route 12 in South Dakota. For the entire route, see U.S. Route 12.

U.S. Highway 12 marker
U.S. Highway 12
Map
US 12 highlighted in red
Route information
Maintained by SDDOT
Length319.24 mi[1] (513.77 km)
Existed1926–present
Major junctions
West end US 12 at the North Dakota state line
Major intersections
East end US 12 at the Minnesota state line
Location
CountryUnited States
StateSouth Dakota
CountiesPerkins, Corson, Walworth, Edmunds, Brown, Day, Roberts, Grant
Highway system
  • South Dakota State Trunk Highway System
← SD 11→ SD 12

U.S. Highway 12 (US 12) is a part of the United States Numbered Highway System that travels from Aberdeen, Washington, to Detroit, Michigan. In the state of South Dakota, US 12 extends from the North Dakota border east to the Minnesota border.

Route description

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US 12 enters South Dakota from North Dakota as a rural two-lane highway about 10 miles (16 km) west-northwest of Lemmon before entering the Standing Rock Indian Reservation. For approximately the next 70 miles (110 km), US 12 runs parallel to the border of North Dakota, sometimes within less than a mile (1.6 km). At Walker, US 12 heads southeast for 37 miles (60 km), where it crosses the Missouri River at Mobridge, exiting the reservation. From there, it continues east for 18 miles (29 km), until it meets with US 83 near Selby. It overlaps US 83 for seven miles (11 km). After leaving US 83, it turns due east and spends about 80 miles (130 km) as a rural two-lane highway again. A few miles before reaching Aberdeen, it becomes an at-grade expressway. After the junction with US 281, it goes back to being two lanes for a few miles through Aberdeen and past Aberdeen Regional Airport, before once again becoming a four-lane expressway, until two miles (3.2 km) before Waubay. East of Waubay it becomes again an at-grade expressway until it meets with I-29 near Summit. The speed limit from Aberdeen to I-29 is 70 mph (110 km/h) except through the communities of Groton, Webster, and Waubay. From there, it heads southeast 22 miles (35 km) until Milbank. At Milbank, it continues east for 12 miles (19 km), until it crosses into Minnesota at Big Stone City, just south of Big Stone Lake.[2]

The South Dakota section of US 12 is legally defined at South Dakota Codified Laws § 31-4-132.[3]

History

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Major intersections

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CountyLocationmi[1]kmDestinationsNotes
PerkinsWhite Butte Township80.50129.55
 US 12 west – Hettinger		Continuation into North Dakota
Lincoln Township91.08146.58
 SD 73 south – Faith		Western end of SD 73 concurrency
CorsonLemmon No. 2101.68163.64


 SD 73 north to ND 49 north – New Leipzig		Eastern end of SD 73 concurrency
Lake Township132.11212.61


 SD 65 north to ND 31 north – Raleigh		Western end of SD 65 concurrency
132.64213.46
 SD 65 south – Isabel		Eastern end of SD 65 concurrency
Module:Jctint/USA warning: Unused argument(s): ctdab
McLaughlin159.32256.40 SD 63 – Fort Yates, Little Eagle
Mission Township181.52292.13
 SD 20 west / Lewis and Clark Trail / Native American Scenic Byway south – Timber Lake		Western end of SD 20 concurrency
184.58297.05
 SD 1806 south – Sitting Bull Monument		Western end of SD 1806 concurrency
Module:Jctint/USA warning: Unused argument(s): ctdab
185.69298.84
 SD 1806 north / Lewis and Clark Trail / Native American Scenic Byway north – Wakpala, Indian Memorial Recreation Area		Eastern end of SD 1806 concurrency
Module:Jctint/USA warning: Unused argument(s): ctdab
Missouri River (Lake Oahe)186.18299.63US 12 Missouri River Bridge
WalworthMobridge Township189.92305.65
 SD 1804 north (4th Avenue East) / Lewis and Clark Trail – Pollock		Western end of SD 1804 concurrency
West Walworth193.79311.87
 SD 1804 south – Akaska		Eastern end of SD 1804 concurrency
West Walworth–East Walworth line207.38333.75
 US 83 north – Mound City		Western end of US 83 concurrency
Selby209.96337.90
 SD 130 east (Scranton Street) – Java, Lake Hiddenwood Recreation Area		Western terminus of SD 130
West Walworth–East Walworth line214.08344.53


 US 83 south / SD 20 east / Lewis and Clark Trail to US 212		Eastern end of US 83/SD 20 concurrency
East Walworth220.94355.57
 SD 271 north – Java, Lake Hiddenwood Recreation Area
226.06363.81
 SD 47 south – Hoven		Western end of SD 47 concurrency
Module:Jctint/USA warning: Unused argument(s): ctdab
EdmundsBowdle233.07375.09
 SD 47 north – Eureka		Eastern end of SD 47 concurrency
Cottonwood Lake–Glen
township line		242.07389.57
 SD 253 north – Hosmer		Southern terminus of SD 253
Roscoe248.04399.18
 SD 247 north (Mitchell Street)		Southern terminus of SD 247
Ipswich263.10423.42
 SD 45 south (4th Street)		Western end of SD 45 concurrency
Fountain Township268.13431.51
 SD 45 north – Leola		Eastern end of SD 45 concurrency
BrownAberdeen288.94465.00
 US 281 (19th Street) to SD 10 – Redfield
Groton309.02497.32
 SD 37 (Broadway Street) to SD 10 – Doland
DayBristol Township326.37525.24 SD 27 – BrittonSouthern terminus of SD 27
Webster343.04552.07

 SD 25 (Main Street) to US 212 / SD 10 – Fort Sisseton State ParkModule:Jct error: Invalid "to" argument
RobertsSummit Township366.36589.60 I-29 / US 81 – Watertown, Sisseton
GrantOsceola–Kilborn
township line		376.68606.21 SD 123 – WilmotSouthern terminus of SD 123
GrantMilbank389.06626.13
 SD 15 (Dakota Street) to US 212 – Hartford Beach State Park		Southern terminus of SD 123
Big Stone City399.02642.16 SD 109 – Hartford Beach State ParkSouthern terminus of SD 109
399.74643.32
 US 12 east – Ortonville		Continuation into Minnesota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

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References

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  1. ^ a b "State Highway Data Viewer". experience.arcgis.com. South Dakota Department of Transportation. Archived from the original on November 4, 2023. Retrieved January 18, 2024.
  2. ^ South Dakota Department of Transportation (2023). South Dakota State Map (PDF) (Map). c. 1:977,644. Pierre: South Dakota Department of Transportation. §§ B8–B18. Archived (PDF) from the original on November 1, 2023. Retrieved November 1, 2023.
  3. ^ "31-4-132. U.S. Highway 12 from North Dakota to Minnesota". South Dakota Statutes. Archived from the original on October 31, 2023. Retrieved October 31, 2023.
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U.S. Route 12
Previous state:
North Dakota 		South Dakota Next state:
Minnesota
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