South Dakota Highway 105
SD 105 highlighted in red | |
| Route information | |
| Existed | c. 1980–1998 |
| Major junctions | |
| South end | I-29 at North Sioux City |
| North end | I-29 at Jefferson |
| Location | |
| Country | United States |
| State | South Dakota |
| Highway system | |
| |
South Dakota Highway 105 (SD 105) was a state highway located entirely in Union County, in the eastern part of the U.S. state of South Dakota. It traveled from Military Road in North Sioux City to Interstate 29 (I-29) in Jefferson. It was an alternate route to I-29.