| Highway 115 | ||||
|---|---|---|---|---|
Route of SD 115 (in red) |
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| Route information | ||||
| Defined by SDCL §31-4-191 | ||||
| Maintained by SDDOT | ||||
| Length: | 100 mi (200 km) | |||
| Existed: | 1980 – present | |||
| Major junctions | ||||
| South end: | US 18 / SD 44 west of Canton | |||
| North end: | I-29 west of Dell Rapids | |||
| Highway system | ||||
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South Dakota numbered highways
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South Dakota Highway 115 was created from the routing of US 77, "Old 77", when its alignment was moved west to become Interstate 29 around 1980 and SD-15's route from U.S. Route 18 to Sioux Falls. SD-115 routes from its intersection with US 18 about 13 miles (21 km) south of Sioux Falls to Interstate 29 3 miles west of Dell Rapids.
SD-115 was designated a POW/MIA Memorial Highway in 2000. The segment south of Sioux Falls to US 18 was originally designated part of the Custer Battlefield Highway when it was designated SD-15.
SD-115 passes through or near to (following route from south):