South Dakota Highway 109

South Dakota Highway 109 (SD 109) is a 12.167-mile (19.581 km) state highway in Grant and Roberts counties in South Dakota, United States, runs along the south side of Big Stone Lake and the Minnesota border from U.S. Route 12 in Big Stone City to South Dakota Highway 15.

Highway 109
Route of SD 109 (in red)
Route information
Defined by SDCL §31-4-190
Maintained by SDDOT
Length	12.167 mi[1] (19.581 km)
Existed	1975[2]–present
History	SD 15Y: 1962–1975[2]
Major junctions
South end	US 12 in Big Stone City
North end	SD 15 in Geneseo Township
Location
Counties	Grant, Roberts
Highway system
South Dakota Highways Interstate U.S. State ← SD 106 → SD 115

Route description

SD 109 begins at an intersection with US 12 in Big Stone City. It immediately crosses a bridge spanning railroad tracks and it heads northwest out of town. The highway follows the curvature of Big Stone Lake on the Minnesota River to the northwest and west for 12 miles (19 km). It ends at a 90-degree bend in SD 15 east of Hartford Beach State Park.[3]

History

SD 109 was originally designated Highway 15Y. It was renumbered to 109 in 1975.[2]

Major intersections

County	Location	mi[1]	km	Destinations	Notes
Grant	Big Stone City	0.000	0.000	US 12 – Milbank, Big Stone City
Roberts	Geneseo Township	12.167	19.581	SD 15 – Milbank, Hartford Beach, Wilmot
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

•  U.S. roads portal

References

1. "Transportation Inventory Management". South Dakota Department of Transportation. Retrieved September 9, 2011.
2. "Highway Division Makes Road Numbering Changes". The Sioux Falls Argus-Leader. March 20, 1975. p. 2 (32). Retrieved March 18, 2020 – via Newspapers.com.
3. Google (September 9, 2011). "South Dakota Highway 109" (Map). Google Maps. Google. Retrieved September 9, 2011.

External links

• South Dakota Highways Page: Highways 1-30