South Dakota Highway 46
# South Dakota Highway 46

South Dakota Highway 46 is a 105.535-mile (169.842 km) state highway in South Dakota, United States, that runs west to east across the southeastern part of the state. It begins at the junction of U.S. Highway 18 and U.S. Highway 281 in Pickstown, and runs due east to nearly the Iowa border, before curving south to cross the border and meeting Iowa Highway 10.

## History

South Dakota 46 was established around 1935. Its initial alignment only extended west to U.S. Highway 81. The extension further west occurred around 1960.

## Major intersections

| County | Location | mi | km | Destinations | Notes |
| - | - | - | - | - | - |
| Charles Mix | Pickstown | 0.000 | 0.000 | US 18 / US 281 – Burke, Lake Andes | |
| Charles Mix | Wagner | 11.598 | 18.665 | SD 50 west to US 18 / US 281 | Western end of SD 50 concurrency |
| Charles Mix | ​ | 20.437 | 32.890 | SD 50 east – Avon, Tyndall | Eastern end of SD 50 concurrency |
| Bon Homme | ​ | 28.439 | 45.768 | SD 37 to SD 50 – Parkston | |
| Bon Homme | ​ | 41.353 | 66.551 | SD 25 to SD 50 – Scotland | |
| Yankton | ​ | 57.437 | 92.436 | US 81 – Yankton, Freeman | |
| Clay–Turner county line | ​ | 73.511 | 118.304 | SD 19 north – Viborg | Western end of SD 19 concurrency |
| Clay–Turner county line | ​ | 79.501 | 127.944 | SD 19 south / SD 19A north – Vermillion, Centerville | Eastern end of SD 19 concurrency |
| Union–Lincoln county line | Beresford | 87.982 | 141.593 | I-29 – Elk Point, Sioux Falls | I-29 Exit 47 |
| Union–Lincoln county line | ​ | 96.503 | 155.307 | SD 11 – Alcester, Canton | |
| Big Sioux River | Big Sioux River | 105.535 | 169.842 | South Dakota–Iowa state line | South Dakota–Iowa state line |
| Big Sioux River | Big Sioux River | 105.535 | 169.842 | Iowa 10 east – Hawarden | Continuation into Iowa |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus ||||||
