South Dakota Highway 25

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Highway 25 marker

Highway 25
Route of SD 25 (in red)
Route information
Defined by SDCL §31-4-148
Maintained by SDDOT
Length: 201.259 mi[1][2] (323.895 km)
Existed: c. 1926 – present
Major junctions
South end: SD 50 northwest of Tabor
North end: ND 18 north of Claire City
Counties: Bon Homme, Hutchinson, Hanson, Miner, Kingsbury, Clark, Day, Marshall, Roberts
Highway system
  • South Dakota Highways
SD 24A SD 26

South Dakota Highway 25 is a state route that runs north to south across a large portion of South Dakota. It is divided into two segments. The main segment begins at the North Dakota border, with the junction of North Dakota Highway 18 north of Claire City. Its southern terminus is at the junction of South Dakota Highway 42 south of Emery. This segment is 191 miles (307 km) long. The second segment begins at a junction with U.S. Highway 18 west of Olivet, and extends south to South Dakota Highway 50 northwest of Tabor. It is 22 miles (35 km) in length. The total length of SD 25 is just over 201 miles (323 km) in length.


When first designated in 1926, the south terminus of South Dakota 25 was at Howard. The segment from north of South Dakota Highway 262 (U.S. Highway 16 at the time) to Howard was gradually added in the 1970s as construction was completed. The segment between SD 42 and SD 262 was added around 1992.

On the north end, SD 25 in 1926 took a zig-zag route north from De Smet; it went through Clark to Webster then west about 15 miles (24 km) before heading north to Britton and the North Dakota line northeast of Kidder.

In the mid 1950s, the route was realigned so it went straight north from De Smet to U.S. Highway 212 east of Clark, then north to Webster, before resuming the previous alignment to North Dakota.

In 1976, the north portion of SD 25 was shifted east to absorb an old alignment of South Dakota Highway 23 Webster to Lake City; it then curved northeast through Veblen and north again at Hammer, on a former alignment of South Dakota Highway 15.

Also in 1976, the distinct southern segment was added, absorbing the old South Dakota Highway 35.

Major intersections[edit]

County Location mi[1][2] km Destinations Notes
Bon Homme 0.000 0.000 SD 50 Southern terminus
8.499 13.678 SD 46
Hutchinson 19.519 31.413 US 18
Gap in route
Hanson 19.519 31.413 SD 262
I-90 – Mitchell, Sioux Falls I-90 exit 350
25.520 41.070 SD 38
Miner 46.658 75.089 SD 34 west Western end of SD 34 concurrency
52.702 84.816 SD 34 east Eastern end of SD 34 concurrency
Kingsbury De Smet 74.594 120.047 US 14
Clark 88.709 142.763 SD 28 Southern end of SD 28 concurrency
91.699 147.575 SD 28 west Northern end of SD 28 concurrency
108.755 175.024 US 212 west Western end of US 212 concurrency
109.625 176.424 US 212 Eastern end of US 212 concurrency
124.674 200.643 SD 20
Day Webster 142.057 228.619 US 12
Marshall Lake City 172.054 276.894 SD 10 west Western end of SD 10 concurrency
172.894 278.246 SD 10 east Eastern end of SD 10 concurrency
Roberts 196.228 315.798 SD 106 south Northern terminus of SD 106
Richland 201.259 323.895 ND 18 north Continuation into North Dakota
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


External links[edit]

Route map: Google

KML is from Wikidata