South Dakota Highway 28

US 281 west of Hitchcock
US 281 west of Hitchcock
	SD 37 east of Hitchcock; SD 25 from east of Willow Lake to west of Bryant; US 81 near Lake Norden; I-29 west of Toronto; SD 15 west of Toronto;
East end	MN 271 at the Minnesota state line near Astoria
Location
Country	United States
State	South Dakota
Counties	Spink; Clark; Hamlin; Deuel;
Highway system
	South Dakota State Trunk Highway System; Interstate; US; State;

South Dakota Highway 28 (SD 28) is a 105.937-mile (170.489 km) state highway in the east-central South Dakota, United States, that connects Hitchcock, Estelline, and Toronto.

SD 28 was established between 1932 and 1935. It replaced SD 26. It was incrementally extended to its current path.

Route description

Spink County

SD 28 begins at an

Foster Creek. An intersection with 406th Avenue (northern terminus of CR 03 and southern terminus of CR 27) leads to Doland. An intersection with 411th Avenue (northern terminus of CR 31 and southern terminus of CR 01) leads to Yale. Between this intersection and one with 413th Avenue, Spink County ends, and the highway begins to travel on the Beadle–Clark

county line.

Clark County

SD 28 continues to the east. An intersection with 415th Avenue (northern terminus of CR 37 and the southern terminus of CR 17) leads to

railroad tracks of BNSF Railway and leaves the city limits of Willow Lake. East of an intersection with the southern terminus of CR 12 (432nd Avenue), the highway begins a concurrency with SD 25. This intersection is also the western terminus of CR 40 (190th Street). The two state highways travel due south for approximately 3 miles (4.8 km). When SD 28 splits off, it resumes its eastward direction. This intersection is the eastern terminus of CR 38 (193rd Street). At an intersection with 436th Avenue, it enters the southwestern part of Hamlin County

.

Hamlin County

Almost immediately, SD 28 enters the southwestern part of

sewage disposal pond and enters the west-central part of Estelline. An intersection with 6th Street leads to Beckman Field and Estelline Elementary & High School. East of Eastwood Drive, the highway leaves the city limits of Estelline. At an intersection with 466th Avenue, it enters the southwestern part of Deuel County

.

Deuel County

Between an intersection with the southern terminus of CR 518 (467th Avenue) and one with 468th Avenue, SD 28 crosses over Munky Run. Just east of 472nd Avenue, it has an interchange with Interstate 29 (I-29). East of 475th Avenue, it intersects the southern terminus of SD 15 (476th Avenue). Between 477th Avenue and CR 315 (479th Avenue), the highway travels through central parts of Toronto. East of CR 11 (487th Avenue), the highway reaches its eastern terminus. It ends at the Minnesota state line. Here, the roadway continues to the east as Minnesota State Highway 271 (MN 271).

National Highway System

The only part of SD 28 that is included as part of the National Highway System, a system of routes determined to be the most important for the nation's economy, mobility and defense, is the small portion concurrent with US 81 near Lake Norden.^[2]

History

SD 28 was established between 1932 and 1935. At that time, it replaced

US 77 east of Estelline. In the mid-1950s, it was extended westward.^[where?] An extension further to the west, to SD 45 north of Miller

, may have been signed briefly, but was not indicated as such by 1970. Between 1948 and 1953, it was extended eastward to the Minnesota state line.

Major intersections

County	Location	mi^[1]	km	Destinations	Notes
US 281 (387th Avenue) / CR 2 west (190th Street) – US 14, Redfield	Western terminus of SD 28; eastern terminus of CR 2
		15.781	25.397	SD 37 (400th Avenue) – US 212, Huron
Clark–Beadle county line	No major junctions
Clark		49.866	80.252	SD 25 north / 190th Street east – US 212	Western end of SD 25 concurrency; roadway continues to the east as CR 40 (190th Street).
Clark		52.865	85.078	SD 25 south / 193rd Street west – De Smet	Eastern end of SD 25 concurrency; roadway continues to the west as CR 38 (193rd Street).
Hamlin		66.675	107.303	SD 21 north – Hayti	Southern terminus of SD 21
		70.984	114.238	US 81 south (454th Avenue) / 193rd Street east – Arlington	Western end of US 81 concurrency; roadway continues to the east as 193rd Street.
		74.205	119.421	US 81 north (454th Avenue) / 192nd Street west – Watertown	Eastern end of US 81 concurrency; roadway continues to the west as 192nd Street.
US 77 south
US 77 south		96.249	154.898	US 77 north
Minnesota state line
Lincoln		105.937	170.489	MN 271 south – Hendricks	Eastern terminus; continuation into Minnesota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus