Highway 37
Route of SD 37 (in red)
Route information
Maintained by SDDOT
Length	242 mi (389 km)
Existed	1926–present
Major junctions
South end	N-14 at the Nebraska border
Major intersections	US 18 northwest of Tripp I-90 in Mitchell US 14 in Huron US 212 in Doland US 12 in Groton
North end	ND 1 at the North Dakota border
Location
Country	United States
State	South Dakota
Counties	Bon Homme Hutchinson Davison Sanborn Beadle Spink Brown
Highway system
South Dakota State Trunk Highway System Interstate US State
← SD 36 → SD 38

South Dakota Highway 37 (SD 37) is a state route that runs across eastern South Dakota. It begins at the Nebraska border northeast of Niobrara, Nebraska, as a continuation of Nebraska Highway 14. It runs to the North Dakota border north of Hecla, where it continues as North Dakota Highway 1. It is 242 miles (389 km) in length.

Route description

History

South Dakota 37 was in place by 1926, and largely has used the same alignment since. The only significant exception was in northeast South Dakota, where SD 37 originally went westward from Groton to Bath, then north via Columbia to Houghton, where it continued to Hecla. This segment was rerouted to the current alignment by 1929.

On the south end, the road ended at the Missouri River at Running Water. A seasonal ferry was in place to carry traffic across the river. A direct connection via bridge did not open until 1998 when the Chief Standing Bear Memorial Bridge was completed.

In the early and mid-1930s, the segment between Huron and Tripp was co-numbered as U.S. Route 281. This concurrency was dropped by 1936, when US 281 was realigned further west.

The segment between Huron and Mitchell was upgraded to a 4-lane expressway, and was largely completed by 2004. A minor rerouting around the west end of Mitchell occurred, resulting in a 2-mile (3.2 km) concurrency with Interstate 90.

Legal definition

The route of SD 37 is defined in South Dakota Codified Laws § 31-4-158.^[1]

Major intersections

County	Location	mi	km	Destinations	Notes
Bon Homme	​			SD 52 east – Yankton	Western terminus of SD 52
	​			SD 50 east – Tyndall	Eastern end of SD 50 concurrency
	​			SD 50 west – Avon	Western end of SD 50 concurrency
	​			SD 46 – Wagner
Hutchinson	​			SD 37A – Tripp
	​			US 18 – Canton
	Parkston			SD 44 – Platte
Davison	​			SD 42 – Ethan
	Mitchell			I-90 east / I-90 BL – Sioux Falls	Eastern end of I-90 concurrency, Exit 332; I-90 Bus. is a continuation north of the I-90 interchange
				I-90 west / I-90 BL – Rapid City	Western end of I-90 concurrency, Exit 330; southern end of I-90 Bus. concurrency
				I-90 BL	Northern end of I-90 Bus. concurrency
Sanborn	​			SD 34 east – Artesian	Eastern end of SD 34 concurrency
	​			SD 34 west – Woonsocket	Western end of SD 34 concurrency
	​			SD 224 west – Alpena	Western terminus of SD 224
Beadle	Huron			US 14 – Pierre, DeSmet
Beadle–Spink county line	​			SD 28 – Hitchcock
Spink	​			US 212 west – Redfield	Western end of US 212 concurrency
	Doland			US 212 east – Clark	Eastern end of US 212 concurrency
	​			SD 20 east – Watertown	Southern end of SD 20 concurrency
	Conde			SD 20 west – Brentford	Northern end of SD 20 concurrency
Brown	Groton			US 12 – Aberdeen, Webster
	​			SD 10 east – Britton	Eastern end of SD 10 concurrency
	​			SD 10 west – Leola	Western end of SD 10 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

Related route

South Dakota Highway 37A (SD 37A) is a north–south state highway in the U.S. state of South Dakota. SD 37A's southern terminus is at SD 37 in Tripp, and the northern terminus is at US 18 north of Tripp.

The entire route is in Hutchinson County.

Location	mi	km	Destinations	Notes
Tripp	0.000	0.000	SD 37	Southern terminus
​			US 18	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

• List of state highways in South Dakota

References

External links

Wikimedia Commons has media related to South Dakota Highway 37.

• South Dakota Highways Page: Highways 31-60