South Dakota is a U.S. state in the Midwestern region of the United States. It is named after the Lakota and Dakota Sioux Native American tribes, who comprise a large portion of the population and historically dominated the territory. South Dakota is the seventeenth largest by area, but the 5th least populous, and the 5th least densely populated of the 50 United States. As the southern part of the former Dakota Territory, South Dakota became a state on November 2, 1889, simultaneously with North Dakota. It is either the 39th or 40th state admitted to the union. President Benjamin Harrison shuffled the statehood papers before signing them so that no one could tell which became a state first. Pierre is the state capital and Sioux Falls, with a population of about 187,200, is South Dakota's largest city.
Yankton County is a county in the U.S. state of South Dakota. As of the 2010 United States Census, the population was 22,438. Its county seat is Yankton. Yankton County comprises the Yankton, SD Micropolitan Statistical Area.
Cedar County is a county in the U.S. state of Nebraska. As of the 2010 United States Census, the population was 8,852. The county seat is Hartington. The county was formed in 1857, and was named for the Cedar tree groves in the area.
Norfolk is a city in Madison County, Nebraska, United States, 113 miles northwest of Omaha and 83 miles west of Sioux City at the intersection of U.S. Routes 81 and 275. The population was 24,210 at the 2010 census, making it the ninth-largest city in Nebraska. It is the principal city of the Norfolk Micropolitan Statistical Area.
Columbus is a city in and the county seat of Platte County, in the state of Nebraska in the Midwestern United States. The population was 22,111 at the 2010 census.
Yankton is a city in and the county seat of Yankton County, South Dakota, United States.
U.S. Route 81 or U.S. Highway 81 (US 81) is a major north–south U.S. highway that extends for 1,220 miles (1,960 km) in the central United States and is one of the original United States Numbered Highways established in 1926 by the American Association of State Highway Officials.
George Shannon (1785–1836), the youngest member of the Lewis and Clark Expedition, was born in Pennsylvania of Irish ancestry. He joined the Corps of Discovery in August 1803, as one of the three men from Pittsburgh recruited by Lewis as he was waiting for the completion of the voyage's vessels in the city.
Lewis and Clark Lake is a 31,400 acre (130 km²) reservoir located on the border of the U.S. states of Nebraska and South Dakota on the Missouri River. The lake is approximately 25 miles (40 km) in length with over 90 miles (140 km) of shoreline and a maximum water depth of 45 feet (14 m). The lake is impounded by Gavins Point Dam and is managed by the U.S. Army Corps of Engineers, Omaha District.
The Missouri National Recreational River is a National Recreational River located on the border between Nebraska and South Dakota. The designation was first applied in 1978 to a 59-mile section of the Missouri River between Gavins Point Dam and Ponca State Park. In 1991, an additional 39-mile section between Fort Randall Dam and Niobrara, Nebraska, was added to the designation. These two stretches of the Missouri River are the only parts of the river between Montana and the mouth of the Missouri that remain undammed or unchannelized. The last 20 miles of the Niobrara River and 6 miles of Verdigre Creek were also added in 1991.
State Route 539 is a north–south state highway in the U.S. state of Washington. The highway travels through northwestern Whatcom County and connects Interstate 5 (I-5) in Bellingham with Lynden and the Canadian border near Langley, British Columbia. Its name, the Guide Meridian, is derived from the Guide meridian that it follows while traveling due north–south.
Interstate 680 (I-680) in Nebraska and Iowa is the northern bypass of the Omaha – Council Bluffs metropolitan area. I-680 spans 16.49 miles (26.54 km) from its southern end in western Omaha to its eastern end near Crescent, Iowa. The freeway passes through a diverse range of scenes and terrains – the urban setting of Omaha, the Missouri River and its valley, the rugged Loess Hills, and the farmland of Pottawattamie County, Iowa.
Nebraska Highway 14 (N-14) is a highway in the U.S. state of Nebraska. It has a southern terminus at the Kansas border, where it continues south as K-14, southwest of Superior and a northern terminus east of Niobrara at the South Dakota border.
The Chief Standing Bear Memorial Bridge is a bridge across the Missouri River at the Nebraska-South Dakota border. Located near Niobrara, Nebraska, not far downstream from the confluence of the Niobrara River with the Missouri, it joins Nebraska Highway 14 to South Dakota Highway 37.
The Vermillion–Newcastle Bridge is a Nebraska and South Dakota Border crossing of the Missouri River. It joins Nebraska Highway 15 to South Dakota Highway 19.
The Meridian Highway Bridge is a bridge that formerly carried U.S. Route 81 across the Missouri River between Nebraska and South Dakota. The Meridian Highway Bridge connects Yankton, South Dakota with rural Cedar County, Nebraska. The Meridian Bridge is a double deck bridge, with the top level having carried traffic into South Dakota from Nebraska, and the lower level having carried traffic into Nebraska from South Dakota.
Transportation in Omaha, Nebraska, includes most major modes, such as pedestrian, bicycle, automobile, bus, train and airplane. While early transportation consisted of ferries, stagecoaches, steamboats, street railroads, and railroads, the city's transportation systems have evolved to include the Interstate Highway System, parklike boulevards and a variety of bicycle and pedestrian trails. The historic head of several important emigrant trails and the First Transcontinental Railroad, its center as a national transportation hub earned Omaha the nickname "Gate City of the West" as early as the 1860s.
U.S. Highway 34 (US 34) is a United States Highway that runs across the southern third of Iowa. It begins on a bridge over the Missouri River west of Glenwood and travels east where it meets Interstate 29 (I-29) and US 275. Through southwestern Iowa, the highway is, for the most part, a two-lane rural road. Its interchanges with US 59 near Emerson and US 71 near Stanton and Villisca are located away from populated areas. At Osceola, the highway intersects I-35 and US 69. Just east of Ottumwa, where the road meets US 63, the road joins with the four-lane Iowa 163 for the remainder of its trek through the state. At Mount Pleasant, it overlaps US 218 and Iowa 27, the Avenue of the Saints Highway. From there, the road heads to the southeast where it crosses the Mississippi River on the Great River Bridge at Burlington.
This timeline of South Dakota is a list of events in the history of South Dakota by year.
Lake Yankton, also called Cottonwood Lake, is an artificial lake that was originally part of the main channel of the Missouri River on the border of the U.S. States of Nebraska and South Dakota, near Yankton, South Dakota. The lake has an approximate surface area of 250 acres (100 ha) and has a maximum depth of 18 feet (5.5 m). The lake is located immediately downstream (east) of Gavins Point Dam and Lewis and Clark Lake, located just north of the current location of the main channel of the Missouri River.
US 81 
