South Dakota Highway 19 (SD 19) 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 southeastern

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 ...

, United States. It connects the

Nebraska Nebraska ( ) is a landlocked U.S. state, state in the Midwestern United States, Midwestern region of the United States. It borders South Dakota to the north; Iowa to the east and Missouri to the southeast, both across the Missouri River; Ka ...

state line, south of Vermillion, with the southeastern part of the Madison area, via Viborg, Hurley, Parker, and Humboldt. SD 19 formerly entered Centerville, but was shifted to the south. Its former path was redesignated as SD 19A. Its former southern terminus was at Vermillion, but was extended when a new bridge from

opened.

Route description

SD 19 begins at the

state line south of Vermillion, in the south-central part of

Clay County Clay County is the name of 18 counties in the United States. Most are named for Henry Clay, U.S. Senator and statesman: * Clay County, Alabama * Clay County, Arkansas (named for John Clayton, and originally named Clayton County) * Clay County, Fl ...

. Here, the roadway continues to the south-southwest as Nebraska Highway 15 (N-15) over 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 ...

. This crossing is part of the

Missouri National Recreational River 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 ...

. It winds its way through

rural area In general, a rural area or a countryside is a geographic area that is located outside towns and cities. Typical rural areas have a low population density and small settlements. Agricultural areas and areas with forestry are typically desc ...

s of the county to the north-northwest. It passes just west of Harold Davidson Field, the airport for Vermillion. Just south of an

intersection In mathematics, the intersection of two or more objects is another object consisting of everything that is contained in all of the objects simultaneously. For example, in Euclidean geometry, when two lines in a plane are not parallel, their ...

with the eastern terminus of Timber Road, the highway curves to the northeast. It then begins a concurrency with SD 50 Business (SD 50 Bus.). The two highways travel to the southeast and curve to the east-southeast. They cross over the Vermillion River. Just east of an intersection with the western terminus of West Main Street, they begin the curve to the northeast. During this curve, they cross over some railroad tracks of

BNSF Railway BNSF Railway is the largest freight railroad in the United States. One of six North American Class I railroads, BNSF has 36,000 employees, of track in 28 states, and over 8,000 locomotives. It has three Transcontinental railroad, transcontine ...

on a road bridge. They enter the

city limits City limits or city boundaries refer to the defined boundary (real estate), boundary or border of a city. The area within the city limit can be called the city proper. Town limit/boundary and village limit/boundary apply to towns and villages. ...

of Vermillion and then curve to the east. At an intersection with West Cherry Street and Stanford Street, the highways split, SD 50 Bus. continues to the east on West Cherry Street, while SD 19 turns left onto Stanford Street and heads to the north. SD 19 leaves the city limits of Vermillion and then intersects SD 50. It curves to the north-northwest and has a second crossing of the Vermillion River. Between 312th and 311th streets, it skirts along the eastern edge of

Spirit Mound Historic Prairie Spirit Mound Historic Prairie is a state park in Clay County, South Dakota, United States, featuring a prominent hill on the Great Plains. The Plains Indians of the region considered Spirit Mound the home of dangerous spirits or little people; me ...

. Just south of 308th Street, it curves to the north-northwest. Just south of 462nd Avenue, it begins to curve back to the north. Between 304th and 303rd streets, it curves to the north-northeast and crosses over the Vermillion River for a third time. Just north of 302nd Street, the highway curves to the north-northwest. Just north of 301st Street is a fourth crossing of the Vermillion River. Just north of 299th Street is a fifth crossing of this river. Just south of 297th Street is a sixth crossing. Almost immediately, it reaches the Turner County line. On the county line, SD 19 intersects SD 46 (297th Street) and the southern terminus of SD 19A. SD 19 and SD 46 begin a concurrency to the west. Between an intersection with both the northern terminus of Frog Creek Road and the southern terminus of 459th Avenue and an intersection with 458th Avenue, the highways cross over Klepke Ditch and Frog Creek. At an intersection with 456th Avenue, SD 19 splits off to the north-northeast and enters Turner County proper. SD 19 and 44 Parker

Between 296th and 295th streets, SD 19 crosses over Frog Creek again and curves to the north-northwest. At 295th Street, it intersects the western terminus of SD 19A. Just south of 294th Street, it curves to the north. North of 292nd Street, it enters the city limits of Viborg. An intersection with Pioneer Avenue leads to Pioneer Memorial Hospital & Health Services. The highway then leaves the city limits of Viborg. Just south of 288th Street, it crosses over Turkey Ridge Creek. At 286th Street, SD 19 begins a concurrency with U.S. Route 18 (US 18) for just over ; they split at 285th Street. Between 284th and 283rd streets, it briefly travels through the far eastern part of Hurley. At 277th Street, it begins a concurrency with SD 44. This intersection is also the eastern terminus of County Road 24 (CR 24). The two highways curve to the northwest. They cross over some railroad tracks of BNSF Railway and curve to the north-northwest and enter the city limits of Parker. At Fourth Street, SD 44 splits off to the west-northwest and heads towards the

business district Business is the practice of making one's living or making money by producing or buying and selling products (such as goods and services). It is also "any activity or enterprise entered into for profit." A business entity is not necessar ...

of Parker. SD 19 curves to the north-northeast and leaves Parker. It then curves back to the north. Just south of 274th Street, it crosses over the West Fork Vermillion River. Just south of 271st Street, it crosses over the East Fork Vermillion River. At an intersection with 268th Street, the highway enters the extreme southwestern part of

Minnehaha County Minnehaha County is a county on the eastern border of the state of South Dakota. As of the 2020 census, the population was 197,214, making it the state's most populous county, and was estimated to be 208,639 in 2024. It contains over 22.56% o ...

. Just south of 267th Street, SD 19 crosses over Elce Creek. At 265th Street, it begins a concurrency with SD 42 to the east. The roadway continues to the north as 455th Avenue. SD 19 and SD 42 travel to the east for about . SD 19 splits off to the north, while the roadway continues to the south as 456th Avenue. Between 263rd and 262nd streets, it passes just to the west of Lost Lake. Just to the west of Humboldt, it has an interchange with

Interstate 90 Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at . It begins in Seattle, Washington, Seattle, Washington, and travels through the Pacific Northwest, Mountain states, Mou ...

(I-90). Almost immediately is an intersection with SD 38. At this intersection, both highways travel concurrently to the east-southeast, while the roadway continues to the north as 456th Avenue. The two highways wind through the northern part of Humboldt. When they split, SD 19 resumes its northward direction. Between 256th and 255th streets, it passes just west of Lost Lake. At an intersection with 244th Street, which is northwest of Buffalo Lake, the highway enters the south-central part of Lake County. SD 19 travels through rural areas of the county. Just west of Lake Madison, and just north of 236th Street, the highway curves to the north-northwest. Just to the west of Bourne Slough, and just south of 235th Street, it begins a curve to the north-northeast. It then meets its northern terminus, an intersection with SD 34 just southeast of Madison.

History

SD 19 was established in 1926. It used to travel through Centerville. Around 1950, it was shifted southward, onto a concurrency with SD 46. Its former path was redesignated as SD 19A. In November 2001, SD 19's southern terminus was extended southward from Vermilion, when a new bridge to Nebraska was opened.

Major intersections

Related routes

South Dakota Highway 19A (SD 19A) is a alternate route of SD 19 that is in the southeastern part of Turner County. It extends from an

with SD 19 and SD 46 to another intersection with SD 19, via Centerville. It is signed north–south from its southern terminus to Centerville and west–east from Centerville to its western terminus. SD 19A is legally defined in South Dakota Codified Laws § 31-4-144. SD 19A begins at an intersection with SD 19 and SD 46 (297th Street) south of Centerville. This intersection is on the

Clay Clay is a type of fine-grained natural soil material containing clay minerals (hydrous aluminium phyllosilicates, e.g. kaolinite, ). Most pure clay minerals are white or light-coloured, but natural clays show a variety of colours from impuriti ...

–Turner county line. It travels to the north-northeast and crosses over the Vermillion River. Just south of 296th Street, the highway begins to curve to the north. Just before entering the

of Centerville, it crosses over the Noble Ditch. In the city is an intersection with State Street and the southern terminus of Broadway Street. The latter street is a truck route through the city. At this intersection, SD 19A turns left onto State Street and travels to the west-southwest. It travels through a

residential area A residential area is a land used in which housing predominates, as opposed to industrial and commercial areas. Housing may vary significantly between, and through, residential areas. These include single-family housing, multi-family residen ...

of Centerville and then leave the city. It crosses over the Vermillion River again and then curves to the west. It then crosses over Turkey Ridge Creek. Just west of 460th Avenue, it crosses over Bonine Ditch. It travels through

s of the county. At an intersection with 457th Avenue, it curves to the west-northwest. It then reaches its western terminus, a second intersection with SD 19 (456th Avenue). At this intersection, the roadway continues as County Road 24 (CR 24; 295th Street). The alignment of SD 19A was originally a portion of SD 19. Around 1950, the routing was changed so that SD 19 followed SD 46 for a stretch, bypassing Centerville to the south. At that time, the original route was given the SD 19A designation.

References

External links