South Dakota Highway 1806 (SD 1806) is a

state highway A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either Route number, numbered or maintained by a sub-national state or province. A road numbered ...

in the U.S. state of

South Dakota South Dakota (; Sioux language, Sioux: , ) is a U.S. state, state in the West North Central states, North Central region of the United States. It is also part of the Great Plains. South Dakota is named after the Dakota people, Dakota Sioux ...

. It exists in four distinct sections. Its longest section begins at SD 273 and runs along the

Missouri River The Missouri River is a river in the Central United States, Central and Mountain states, Mountain West regions of the United States. The nation's longest, it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Moun ...

nearly its whole length, serving

Pierre Pierre is a masculine given name. It is a French form of the name Peter. Pierre originally meant "rock" or "stone" in French (derived from the Greek word πέτρος (''petros'') meaning "stone, rock", via Latin "petra"). It is a translation ...

. SD 1806 along with SD 1804 are numbered from the years of the

Lewis and Clark Expedition The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select gro ...

Route description

Gregory County

Southern segment

Northern segment

Lyman and Stanley Counties

SD 1806 begins at the northern terminus of SD 273 in Lyman County and begins heading northwest. The route remains a two lane road and follows the Missouri River, heading towards

. As it nears Pierre, the route becomes concurrent with

US 83 U.S. Route 83 (US 83) is a major north–south United States Numbered Highway that extends in the central United States. Only four other north–south routes are longer: US 1, US 41, US 59, and US 87, while U ...

and enters Fort Pierre. At the north end of Fort Pierre, US 83 becomes concurrent with

US 14 U.S. Route 14 or U.S. Highway 14 (US 14), an east–west route, is one of the original United States Numbered Highways of 1926. It is about long. It is roughly parallel to Interstate 90 (I-90). The highway's eastern termi ...

heading east while SD 1806 splits from US 83 and becomes concurrent with US 14 and

SD 34 South Dakota Highway 34 (SD 34) is a state route that runs parallel to Interstate 90 across the entire state of South Dakota. It begins at the Wyoming border west of Belle Fourche, as a continuation of Wyoming Highway 24 (WYO 24). The e ...

for nearly a mile, heading west from the Deadwood Street and Yellowstone Street intersection. After one mile of concurrency, SD 1806 splits from US 14/SD 34 and heads north, passing by the Fort Pierre Chouteau National Historic Landmark and remaining parallel with the Missouri River. It then passes by

Lake Oahe Lake Oahe () is a large reservoir behind the Oahe Dam on the Missouri River; it begins in central South Dakota and continues north into North Dakota in the United States. The lake has an area of and a maximum depth of . By volume, it is the four ...

, intersecting the west end of SD 204 which passes over the

Oahe Dam The Oahe Dam () is a large earthen dam on the Missouri River, just north of Pierre, South Dakota, Pierre, South Dakota, United States. Begun in 1948 and opened in 1962, the dam creates Lake Oahe, the fourth-largest man-made reservoir in the United ...

. SD 1806 continues west and remains parallel with the Missouri River until reaching Sansarc Road. The route continues northwest and ends at an intersection with Minneconjou Road south of Mission Ridge.

Corson County

History

A portion of SD 1806 near Lake Oahe was numbered as SD 514. It was later redesignated into parts of SD 1804, SD 204, and part of today's portion of SD 1806.

Major intersections

Wakpala spur

South Dakota Highway 1806 Spur (SD 1806P) is a long spur route of SD 1806. Although unsigned, it provides access to the town of Wakpala, South Dakota, located in the

Standing Rock Indian Reservation The Standing Rock Sioux Tribe of North & South Dakota controls the Standing Rock Reservation (), which straddles the border between North and South Dakota in the United States, and is inhabited by ethnic "Hunkpapa and Sihasapa bands of Lako ...

References

External links

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1806 Events January–March *January 1 ** The French Republican Calendar is abolished. ** The Kingdom of Bavaria is established by Napoleon. *January 5 – The body of British naval leader Horatio Nelson, 1st Viscount Nelson, lies in state ...

Transportation in Gregory County, South Dakota Transportation in Lyman County, South Dakota Transportation in Stanley County, South Dakota Transportation in Corson County, South Dakota