Sioux County is a county located along the southern border of the U.S. state of North Dakota. As of the 2020 census, the population was 3,898. Its eastern border is the Missouri River and its county seat is Fort Yates.
Morton County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 33,291, making it the sixth-most populous county in North Dakota. Its county seat is Mandan. Morton County is included in the Bismarck, ND, Metropolitan Statistical Area.
Mercer County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 8,350. Its county seat is Stanton.
McKenzie County is a county in the U.S. state of North Dakota. As of the 2020 census, the population was 14,704. Its county seat is Watford City.
Garrison Dam is an earth-fill embankment dam on the Missouri River in central North Dakota, U.S. Constructed by the U.S. Army Corps of Engineers from 1947 to 1953, at over 2 miles (3.2 km) in length, the dam is the fifth-largest earthen dam in the world. The reservoir impounded by the dam is Lake Sakakawea, which extends to Williston and the confluence with the Yellowstone River, near the Montana border.
The Standing Rock Reservation lies across the border between North and South Dakota in the United States, and is inhabited by ethnic "Hunkpapa and Sihasapa bands of Lakota Oyate and the Ihunktuwona and Pabaksa bands of the Dakota Oyate," as well as the Hunkpatina Dakota. The Ihanktonwana Dakota are the Upper Yanktonai, part of the collective of Wiciyena. The sixth-largest Native American reservation in land area in the US, Standing Rock includes all of Sioux County, North Dakota, and all of Corson County, South Dakota, plus slivers of northern Dewey and Ziebach counties in South Dakota, along their northern county lines at Highway 20.
State Route 96 is a state highway in the U.S. state of California that follows the Trinity and Klamath Rivers between State Route 299 in Willow Creek and Interstate 5 near Yreka in Northern California. For most of the route it goes through the Karuk Tribal Reservation, the Yurok Tribal Reservation, and the Hoopa Tribal Reservation. Over half of the length is the Bigfoot Scenic Byway, passing through "the region boasting the most sightings of Bigfoot of anywhere in the country" according to the National Forest Scenic Byway Program.
North Dakota Highway 23 is a 122.581-mile-long (197.275 km) east–west highway in northwestern North Dakota. ND 23's eastern terminus is at ND 41 near Velva, and its western terminus at U.S. Route 85 in Watford City.
The Fort Berthold Indian Reservation is a U.S. Indian reservation in western North Dakota that is home for the federally recognized Mandan, Hidatsa, and Arikara Nation, also known as the Three Affiliated Tribes. The reservation includes lands on both sides of the Missouri River. The tribal headquarters is in New Town, the 18th largest city in North Dakota.
Four Bears Bridge is one of two bridges built over the Missouri River on the Fort Berthold Reservation in the U.S. state of North Dakota. It carries North Dakota Highway 23. The current bridge which opened in 2005 is the second largest bridge in the state and replaced an earlier bridge built in 1934. The 1934 bridge was moved in 1955 following the construction of the Garrison Dam and the creation of Lake Sakakawea.
The Bismarck Expressway is a state highway in Mandan and Bismarck, North Dakota, in the United States. It carries two unsigned highways: Interstate 194 (I-194) from its west end at exit 156 of I-94 to I-94 Business in Mandan, and North Dakota Highway 810 (ND 810) from I-94 Bus. in Mandan, around the south side of Bismarck back to I-94 Bus. in Bismarck. I-94 Bus. takes the designation from the end of ND 810 to the designation's eastern terminus at I-94 and US Highway 83 (US 83). The portion in Mandan, even where it is ND 810, is a freeway; once it crosses the Missouri River into Bismarck, it becomes a four-lane surface road.
South Dakota Highway 20 (SD 20) is a 385.079-mile (619.725 km) state highway in northern South Dakota, United States, that connects the Montana state line, west-southwest of Camp Crook, with the Minnesota state line, east-southeast of Revillo, via Buffalo, Bison, Timber Lake, Mobridge, Selby, and Watertown. From Mobridge to the Walworth–Potter county line, this highway is part of the Lewis and Clark Trail. From about Timber Lake to just west of Mobridge, this highway is part of the Native American Scenic Byway. From the Montana state line to Camp Crook, the highway is a dirt road.
North Dakota Highway 8 (ND 8) is a 211.321-mile (340.088 km) north–south state highway in North Dakota, United States. The highway is split into two segments. The southern segment is 133 miles (214 km) long and travels from Lake Sakakawea near Twin Buttes to South Dakota Highway 75 (SD 75) near Hettinger. The northern segment is 78 miles (126 km) long and travels from Saskatchewan Highway 9 (SK 9) in Northgate on the Canada–United States border to ND 23 near New Town. The highway was originally continuous but was separated by the formation of Lake Sakakawea in the 1950s.
This article describes transportation in the U.S. state of South Dakota.
North Dakota Highway 6 is a 67.143-mile-long (108.056 km) major north–south highway in North Dakota. It runs from South Dakota Highway 63 in McLaughlin to Interstate 94 Business Loop in downtown Mandan.
North Dakota Highway 22 (ND 22) is a 156.051-mile-long (251.140 km) major north–south state highway in North Dakota. It begins at the South Dakota state line south of the small town of Reeder and ends at ND 23 west of New Town and north of Mandaree. The route has one concurrency with U.S. Route 12. The highway widely parallels US 85, running about fifteen miles east of it.
North Dakota Highway 1804 is a state highway in the U.S. state of North Dakota. ND 1804 and ND 1806 were named to reflect the years of Lewis and Clark's travels through the area, and together constitute the portion of the Lewis and Clark Trail that runs through North Dakota along the northeast and southwest sides of Lake Sakakawea and the Missouri River, respectively.
South Dakota Highway 63 (SD 63) is a 167.455-mile (269.493 km) state highway in central South Dakota, United States, that connects U.S. Route 18 (US 18) south-southeast of Parmelee with the North Dakota state line north of McLaughlin.
North Dakota Highway 24 (ND 24) is a minor north–south highway contained entirely within Sioux County, North Dakota. It runs from one junction with ND 6 east of Selfridge near the South Dakota border to another junction on ND 6 west of Solen.
South Dakota Highway 1806 is a state highway in the U.S. state of South Dakota. It exists in four distinct sections. Its longest section begins at SD 273 and runs along the Missouri River nearly its whole length, serving Pierre. SD 1806 along with SD 1804 are numbered from the years of the Lewis and Clark Expedition.
SD 1806 at the North Dakota/South Dakota border
ND 24 near Cannon Ball, North Dakota 
I-94 in Mandan 
ND 8 near Halliday 
ND 200 near Pick City 
ND 23 near Charlson 
