South Dakota Highway 37

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Highway 37 marker

Highway 37
Route of SD 37 (in red)
Route information
Defined by SDCL §31-4-158
Maintained by SDDOT
Length: 242 mi (389 km)
Existed: 1926 – present
Major junctions
South end: N-14 at the Nebraska border
North end: ND 1 at the North Dakota border
Counties: Bon Homme, Hutchinson, Davison, Sanborn, Beadle, Spink, Brown
Highway system

South Dakota Highways

SD 36 SD 37A

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.


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[edit]

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

Major intersections[edit]

County Location mi km Destinations Notes
Bon Homme SD 52 east – Yankton Western terminus of SD 52
SD 50 east – Tyndall East end of SD 50 concurrency
SD 50 west – Avon West 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 Bus. – Sioux Falls East end of I-90 concurrency, exit 332; I-90 Bus. is a continuation north of the I-90 interchange.
I-90 west / I-90 Bus. – Rapid City West end of I-90 concurrency, exit 330; south end of I-90 Bus. concurrency.
I-90 Bus. North end of I-90 Bus. concurrency
Sanborn SD 34 east – Artesian East end of SD 34 concurrency
SD 34 west – Woonsocket West end of SD 34 concurrency
SD 224 west – Alpena Western terminus of SD 224
Beadle Huron US 14 – Pierre, DeSmet
county line
SD 28 – Hitchcock
Spink US 212 west – Redfield West end of US 212 concurrency
Doland US 212 east – Clark East end of US 212 concurrency
SD 20 east – Watertown South end of SD 20 concurrency
Conde SD 20 west – Brentford North end of SD 20 concurrency
Brown Groton US 12 – Aberdeen, Webster
SD 10 east – Britton East end of SD 10 concurrency
SD 10 west – Leola West end of SD 10 concurrency
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ "South Dakota Codified Law". Retrieved November 3, 2012. 

External links[edit]

Route map: Bing / Google

KML is from Wikidata