Total Bridges
5,905
Public highway bridges in South Dakota
State profile · Above median Poor share
South Dakota bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in South Dakota, based on the FHWA National Bridge Inventory.
- 5,905
- Public bridges
- 31.9%
- Good condition
- 16.2%
- Poor condition
Data updated May 2026
Good Condition
31.9%
1,885 bridges rated 7-9
-18.1pp vs 50% benchmark
Poor Condition
16.2%
959 bridges whose lowest applicable component is rated 0-4
9.2pp vs national avg 7.0%
South Dakota vs national bridge condition
South Dakota - Good condition share 31.9%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
South Dakota - Poor-condition share 54.1%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Counties (66)
Aurora 61 Beadle 153 Bennett 15 Bon Homme 126 Brookings 234 Brown 170 Brule 38 Buffalo 25 Butte 143 Campbell 15 Charles Mix 103 Clark 21 Clay 94 Codington 74 Corson 49 Custer 95 Davison 125 Day 37 Deuel 72 Dewey 28 Douglas 44 Edmunds 20 Fall River 80 Faulk 46 Grant 205 Gregory 51 Haakon 69 Hamlin 62 Hand 126 Hanson 62 Harding 49 Hughes 41 Hutchinson 161 Hyde 23 Jackson 89 Jerauld 35 Jones 37 Kingsbury 35 Lake 79 Lawrence 136 Lincoln 207 Lyman 114 Marshall 39 McCook 98 McPherson 14 Meade 217 Mellette 28 Miner 64 Minnehaha 395 Moody 87 Oglala Lakota 34 Pennington 350 Perkins 60 Potter 24 Roberts 157 Sanborn 53 Spink 176 Stanley 37 Sully 31 Todd 24 Tripp 90 Turner 143 Union 172 Walworth 34 Yankton 99 Ziebach 30
South Dakota vs nearby ranks
Adjacent states by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below South Dakota on the same metric.
GU
Guam
15.25% top marginal rate
WV
West Virginia
16.02% top marginal rate
SD
South Dakota
16.24% top marginal rate
IA
Iowa
20.01% top marginal rate
VI
Virgin Islands
29.17% top marginal rate
Bridges Needing Most Attention in South Dakota
Six lowest-condition bridges in South Dakota, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
483 AVENUE
PoorOver: WHETSTONE RV
4.8E & 3.2N MILBANK, Grant, SD
Built 1962 Load: 0.9 t ADT: 25
202ND ST.
PoorOver: BEAR BUTTE CK
5.3E BEAR BUTTE, Meade, SD
Built 2000 Load: 0.9 t ADT: 50
45980 303 ST.
PoorOver: VERMILLION RV
6S & 7.8E IRENE, Clay, SD
Built 1909 Load: 1.8 t ADT: 15
460th Avenue
PoorOver: Big Coulee Creek
4S & 2W of Peever, Roberts, SD
Built 1950 Load: 2.2 t ADT: 22
197TH ST
PoorOver: TURTLE CK
1N & 1E ST LAWRENCE, Hand, SD
Built 1925 Load: 2.5 t ADT: 25
242 ST
PoorOver: CK
1.8E 11.0N PLANKINTON, Aurora, SD
Built 1917 Load: 2.7 t ADT: 101
All Bridges in South Dakota
272 STREET
FairOver: BR THUNDER CK
6N & 4.1E WINNER, Tripp, SD
Built 1959 Load: 17.5 t ADT: 80
309TH AVENUE
FairOver: CK
0.2 W 0.4 S BLUNT, Hughes, SD
Built 1962 Load: 17.6 t ADT: 152
378th Avenue
FairOver: Creek
5.7S & 9.5W of Virgil, Beadle, SD
Built 1955 Load: 17.7 t ADT: 56
ELK CREEK RD.
FairOver: ANTELOPE CK
13S&22.2E STURGIS, Meade, SD
Built 1954 Load: 17.7 t ADT: 63
161ST STREET
FairOver: DRAINAGE DITCH
2.4W TURTON, Spink, SD
Built 1930 Load: 17.7 t ADT: 169
42860 COLONY RD.
FairOver: JAMES RV
6.9N 2.6E OLIVET, Hutchinson, SD
Built 1961 Load: 17.8 t ADT: 147
239 STREET
FairOver: SMITH CK
3.9E & 10N PUKWANA, Brule, SD
Built 1959 Load: 17.9 t ADT: 41
355 AVENUE
FairOver: SMITH CK
9.7N & 5E PUKWANA, Brule, SD
Built 1959 Load: 17.9 t ADT: 41
272 STREET
FairOver: THUNDER CK
6N & 2.9E WINNER, Tripp, SD
Built 1959 Load: 17.9 t ADT: 110
44367 309th Street
FairOver: James River
1.1S&2.4W of Mission Hill, Yankton, SD
Built 1952 Load: 17.9 t ADT: 2,250
173RD AVE
FairOver: BOXELDER CK
0.2 S.E. OWANKA, Pennington, SD
Built 1981 Load: 18.0 t ADT: 14
42070 292ND STREET
FairOver: DAWSON CK
0.5N 3.3W SCOTLAND, Bon Homme, SD
Built 2014 Load: 18.1 t ADT: 386
42110 307th Street
FairOver: Snatch Creek
3S & 4.1E of Tyndall, Bon Homme, SD
Built 1950 Load: 18.1 t ADT: 67
212TH STREET
FairOver: CK
1S & 3.1E VOLGA, Brookings, SD
Built 1950 Load: 18.1 t ADT: 92
216TH STREET
FairOver: BIG SIOUX RV OVERFLOW
4S & 2.8W BROOKINGS, Brookings, SD
Built 1955 Load: 18.1 t ADT: 454
CAMP CROOK RD
FairOver: SOUTH INDIAN CK
4.3 N JCT US85, Butte, SD
Built 1962 Load: 18.1 t ADT: 40
STATE HWY 10
FairOver: SPRING CREEK & RESERVOIR
1/2 Mile No. of Pollock, Campbell, SD
Built 1961 Load: 18.1 t ADT: 129
475TH AVE
FairOver: CK
1.8N & 1W of Clear Lake, Deuel, SD
Built 1960 Load: 18.1 t ADT: 30
TWNSHP RD 185TH ST
FairOver: CK
3.0N 2.3W BRANDT, Deuel, SD
Built 1940 Load: 18.1 t ADT: 35
IRR BIA RTE 2
FairOver: LITTLE MOREAU CREEK
3.2 KM W OF WHITE HORSE, Dewey, SD
Built 1960 Load: 18.1 t ADT: 109
152 STREET
FairOver: INDIAN RV
12.2W & 5.5S MARVIN, Grant, SD
Built 1932 Load: 18.1 t ADT: 52
156 ST
FairOver: CK
2.5E & 6.0S TWIN BROOKS, Grant, SD
Built 1901 Load: 18.1 t ADT: 35
363 AVE
FairOver: WOLF CK
8.2 N ST. LAWRENCE, Hand, SD
Built 1951 Load: 18.1 t ADT: 78
374 AVE
FairOver: WOLF CK
5E 1.5S BURDETTE, Hand, SD
Built 1956 Load: 18.1 t ADT: 43
229 ST
FairOver: BATTLE CK
7.2E & 3.5S RAMONA, Lake, SD
Built 1941 Load: 18.1 t ADT: 265
BOXELDER CAMP
FairOver: BOXELDER CREEK
T 3 N R 5 E SEC 20, Meade, SD
Built 1948 Load: 18.1 t ADT: 25
BIG FOOT RD
FairOver: KIMBALL CK
3.4 E 9.8 S QUINN, Pennington, SD
Built 1962 Load: 18.1 t ADT: 79
472nd Avenue
FairOver: Creek
0.9N of Corona, Roberts, SD
Built 1955 Load: 18.1 t ADT: 208
343 AVE
FairOver: WEST FORK VERMILLION RV
3.9N HOWARD, Miner, SD
Built 1940 Load: 18.2 t ADT: 40
473rd Avenue
FairOver: Big Slough Creek
0.9N of Rosholt, Roberts, SD
Built 1953 Load: 18.2 t ADT: 620
35400 271st Street
FairOver: Snake Creek
1W of Academy, Charles Mix, SD
Built 1963 Load: 18.3 t ADT: 48
28770 423 AVE.
FairOver: SOUTH BR LONETREE CK
3 W & 1.7 S OLIVET, Hutchinson, SD
Built 1960 Load: 18.3 t ADT: 69
471st Avenue
FairOver: Snake Creek
3.8S & 1W of Worthing, Lincoln, SD
Built 1935 Load: 18.3 t ADT: 45
41780 308th Street
FairOver: Deadman Creek
4S & 0.8E of Tyndall, Bon Homme, SD
Built 1930 Load: 18.4 t ADT: 60
242 STREET
FairOver: BR SMITH CK
1.5W & 9N KIMBALL, Brule, SD
Built 1959 Load: 18.4 t ADT: 43
363 AVE
FairOver: SHAEFER CK
6.1 W BURDETTE, Hand, SD
Built 1957 Load: 18.4 t ADT: 43
HEREFORD RD.
FairOver: CK
29E & 3.8N STURGIS, Meade, SD
Built 1960 Load: 18.4 t ADT: 55
223rd Street
FairOver: Spring Creek
3.3W of Ward, Moody, SD
Built 1951 Load: 18.4 t ADT: 263
NEMO ROAD
FairOver: BOXELDER CK
11.2W 4.IN RAPID CITY, Pennington, SD
Built 1972 Load: 18.4 t ADT: 974
289 STREET
FairOver: WILLOW CK
2.5W & 3N CLEARFIELD, Tripp, SD
Built 1958 Load: 18.4 t ADT: 110
28450 447TH AVE
FairOver: TURKEY RIDGE CK
11S MARION, Turner, SD
Built 1953 Load: 18.4 t ADT: 189
IRR COUNTY ROAD
FairOver: FLINT ROCK CK
5.5 N & 8.5 W RED EL, Ziebach, SD
Built 1945 Load: 18.4 t ADT: 16
478TH AVENUE
FairOver: SIX MILE CK
0.5N WHITE, Brookings, SD
Built 1950 Load: 18.5 t ADT: 714
46050 294TH ST
FairOver: TURKEY RIDGE CK
1.5W CENTERVILLE, Turner, SD
Built 2002 Load: 18.5 t ADT: 97
173 ST (MEADE CO)
FairOver: BEAVER CK
13.0S 3.3E FAITH, Ziebach, SD
Built 1935 Load: 18.5 t ADT: 10
386 AVE
FairOver: WEST FIRESTEEL CK
9.1 N PLANKINTON, Aurora, SD
Built 1930 Load: 18.6 t ADT: 53
393 AVE
FairOver: SAND CK
1E & 2.1S ALPENA, Jerauld, SD
Built 1953 Load: 18.6 t ADT: 79
27510 395 AVE
FairOver: CHOTEAU CK
4.9N,3.0E OF ARMOUR, Douglas, SD
Built 1940 Load: 18.7 t ADT: 77
475th Avenue
FairOver: Trib. to W Brule Creek
3E & 4.3N of Beresford, Lincoln, SD
Built 1935 Load: 18.7 t ADT: 45
220 AVENUE
FairOver: BEAR IN THE LODGE CK
5.8N 1.8E MARTIN, Bennett, SD
Built 1958 Load: 18.8 t ADT: 40
Showing 651-700 of 5,905 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.