South Dakota Highway 109

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Highway 109 marker

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: 1976 – present
History: SD 15Y: 1962–1976
Major junctions
South end: US 12 in Big Stone City
North end: SD 15 in Geneseo Township
Counties: Grant, Roberts
Highway system
  • South Dakota Highways
SD 106 SD 115

South Dakota Highway 109 (SD 109) is a short highway running along Big Stone Lake and the Minnesota border from South Dakota Highway 15 to U.S. Route 12 in Big Stone City. This highway was originally designated Highway 15Y. It was renumbered to 109 in 1976.[2]

Route description[edit]

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]

Major intersections[edit]

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


  1. ^ a b "Transportation Inventory Management". South Dakota Department of Transportation. Retrieved September 9, 2011. 
  2. ^ Geelhart, Chris. "The Unofficial South Dakota Highways Page, Highways 101-190". Retrieved March 23, 2007. [self-published source?]
  3. ^ Google (September 9, 2011). "South Dakota Highway 109" (Map). Google Maps. Google. Retrieved September 9, 2011. 

Route map: Bing / Google

KML is from Wikidata

External links[edit]