Total Bridges
5,905
Public highway bridges in South Dakota
State profile · Above national median SD
South Dakota bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in South Dakota — drawn straight from the FHWA National Bridge Inventory.
- 5,905
- Public bridges
- 31.9%
- Good condition
- 16.2%
- Poor condition
- 16.2%
- Structurally deficient
Good Condition
31.9%
1,885 bridges rated 7-9
-18.1pp vs 50% benchmark
Poor Condition
16.2%
959 bridges rated 0-4
Structurally Deficient
16.2%
959 bridges flagged for repair priority
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 — Structurally deficient share 54.1%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — South Dakota (FHWA NBI)
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 on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below South Dakota on the same metric.
66
Guam
15.25% top marginal rate
54
West Virginia
16.02% top marginal rate
46
South Dakota
16.24% top marginal rate
19
Iowa
20.01% top marginal rate
78
Virgin Islands
29.17% top marginal rate
Bridges Needing Most Attention in South Dakota
Six lowest-condition bridges in South Dakota, ranked by composite NBI rating. Each is inspected at least every 24 months.
483 AVENUE
Structurally DeficientOver: WHETSTONE RV
4.8E & 3.2N MILBANK, Grant, SD
Built 1962 Load: 0.9 t ADT: 25
202ND ST.
Structurally DeficientOver: BEAR BUTTE CK
5.3E BEAR BUTTE, Meade, SD
Built 2000 Load: 0.9 t ADT: 50
45980 303 ST.
Structurally DeficientOver: VERMILLION RV
6S & 7.8E IRENE, Clay, SD
Built 1909 Load: 1.8 t ADT: 15
460th Avenue
Structurally DeficientOver: Big Coulee Creek
4S & 2W of Peever, Roberts, SD
Built 1950 Load: 2.2 t ADT: 22
197TH ST
Structurally DeficientOver: TURTLE CK
1N & 1E ST LAWRENCE, Hand, SD
Built 1925 Load: 2.5 t ADT: 25
242 ST
Structurally DeficientOver: CK
1.8E 11.0N PLANKINTON, Aurora, SD
Built 1917 Load: 2.7 t ADT: 101
All Bridges in South Dakota
368TH AVE
FairOver: DOVE CK
2.7N ROCKHAM, Faulk, SD
Built 1934 Load: 19.6 t ADT: 38
333 AVENUE
FairOver: CK
1.7S DALLAS, Gregory, SD
Built 1955 Load: 19.6 t ADT: 135
355TH AVE
FairOver: LITTLE WOLF CK
5W & 4.4N MILLER, Hand, SD
Built 1953 Load: 19.6 t ADT: 75
203RD ST
FairOver: CK
5S & 1.6W MILLER, Hand, SD
Built 1930 Load: 19.6 t ADT: 14
206TH ST
FairOver: TURTLE CK
8S & 0.2E MILLER, Hand, SD
Built 1928 Load: 19.6 t ADT: 10
363RD AVE
FairOver: CK
2.5N & 0.5E ST LAWRENCE, Hand, SD
Built 1930 Load: 19.6 t ADT: 145
368 AVE
FairOver: CK
1.7 S ROCKHAM, Hand, SD
Built 1936 Load: 19.6 t ADT: 116
196TH ST
FairOver: MARSH CK
4 N & 0.3 W BANCROFT, Kingsbury, SD
Built 1930 Load: 19.6 t ADT: 25
425TH AVENUE
FairOver: REDSTONE CK
.3N MANCHESTER, Kingsbury, SD
Built 1965 Load: 19.6 t ADT: 130
425TH AVENUE
FairOver: REDSTONE CK
0.6 S MANCHESTER, Kingsbury, SD
Built 1963 Load: 19.6 t ADT: 150
203RD STREET
FairOver: CK
3 S & 1.2 E BADGER, Kingsbury, SD
Built 1921 Load: 19.6 t ADT: 106
203RD STREET
FairOver: CK
3 S & 2.9 E BADGER, Kingsbury, SD
Built 1921 Load: 19.6 t ADT: 106
457TH AVENUE
FairOver: LONG CREEK
1E & 0.8S PUMPKIN CENTER, Minnehaha, SD
Built 1970 Load: 19.6 t ADT: 41
251ST STREET
FairOver: WEST BR SKUNK CK
3S & 0.8E BUFFALO TRADING, Minnehaha, SD
Built 1976 Load: 19.6 t ADT: 38
462ND AVENUE
FairOver: WEST BR SKUNK CK
1W & 4.2N HARTFORD, Minnehaha, SD
Built 1976 Load: 19.6 t ADT: 32
463RD AVENUE
FairOver: WEST BR SKUNK CK
8.3S & 1W COLTON, Minnehaha, SD
Built 1989 Load: 19.6 t ADT: 89
463RD AVE, HWY 151
FairOver: TRIB TO SKUNK CK
2.6S HARTFORD, Minnehaha, SD
Built 1952 Load: 19.6 t ADT: 3,702
253RD STREET
FairOver: COLTON CK
5S & 0.3E COLTON, Minnehaha, SD
Built 1978 Load: 19.6 t ADT: 21
256TH STREET
FairOver: SKUNK CK
1N & 5.6W CROOKS, Minnehaha, SD
Built 1989 Load: 19.6 t ADT: 54
251ST STREET
FairOver: COLTON CK
3S & 0.5E COLTON, Minnehaha, SD
Built 1969 Load: 19.6 t ADT: 15
253RD STREET
FairOver: SKUNK CK
2.4E & 5S COLTON, Minnehaha, SD
Built 1993 Load: 19.6 t ADT: 20
249TH STREET
FairOver: TRIB TO SKUNK CK
1S & 3.1E COLTON, Minnehaha, SD
Built 1999 Load: 19.6 t ADT: 39
247TH STREET
FairOver: SKUNK CK
3.9E & 1N COLTON, Minnehaha, SD
Built 1989 Load: 19.6 t ADT: 11
257TH STREET
FairOver: WILLOW CK
1.4W CROOKS, Minnehaha, SD
Built 2010 Load: 19.6 t ADT: 90
469TH AVENUE
FairOver: WILLOW CK
1W & 1.1S CROOKS, Minnehaha, SD
Built 1988 Load: 19.6 t ADT: 30
263RD ST, HWY 140
FairOver: WILLOW CK
0.5N & 0.1E ELLIS, Minnehaha, SD
Built 1956 Load: 19.6 t ADT: 2,851
264TH, MADISON ST
FairOver: WILLOW CK
0.5S & 0.3E ELLIS, Minnehaha, SD
Built 1957 Load: 19.6 t ADT: 386
264TH, MADISON ST
FairOver: TRIB TO SKUNK CK
0.5S & 0.9E ELLIS, Minnehaha, SD
Built 1978 Load: 19.6 t ADT: 336
258TH ST
FairOver: TRIB TO WILLOW CK
3.4W of Renner, Minnehaha, SD
Built 1969 Load: 19.6 t ADT: 1,024
472ND AVE, HWY 133
FairOver: TRIB TO BIG SIOUX RV
4.4N & 2.5W RENNER, Minnehaha, SD
Built 1955 Load: 19.6 t ADT: 463
473RD AVENUE
FairOver: TRIB TO BIG SIOUX RV
1.1N & 1W BALTIC, Minnehaha, SD
Built 1937 Load: 19.6 t ADT: 65
473RD AVENUE
FairOver: TRIB TO BIG SIOUX RV
0.9N & 1W BALTIC, Minnehaha, SD
Built 1976 Load: 19.6 t ADT: 19
250TH ST, HWY 114
FairOver: BIG SIOUX RIVER
0.6W BALTIC, Minnehaha, SD
Built 2013 Load: 19.6 t ADT: 2,454
260TH, 72ND ST N
FairOver: SILVER CK
2S & 0.4W RENNER, Minnehaha, SD
Built 1986 Load: 19.6 t ADT: 114
252ND STREET
FairOver: SILVER CK
0.6E & 2S BALTIC, Minnehaha, SD
Built 1970 Load: 19.6 t ADT: 2
NORWAY STREET
FairOver: SILVER CK
0.6E & 2.5S BALTIC, Minnehaha, SD
Built 1970 Load: 19.6 t ADT: 21
256TH STREET
FairOver: SILVER CK
2N & 0.3E RENNER, Minnehaha, SD
Built 1991 Load: 19.6 t ADT: 49
477TH AVENUE
FairOver: SLIP-UP CK
2.3E & 1.6S RENNER, Minnehaha, SD
Built 1987 Load: 19.6 t ADT: 72
477TH AVENUE
FairOver: SLIP-UP CREEK
2.5E & 0.1S RENNER, Minnehaha, SD
Built 1983 Load: 19.6 t ADT: 66
251ST STREET
FairOver: SLIP-UP CREEK
3.9E & 1S BALTIC, Minnehaha, SD
Built 1986 Load: 19.6 t ADT: 35
E 60th St N
FairOver: SLIP-UP CREEK
4.1 W & 0.5 N of Brandon, Minnehaha, SD
Built 2000 Load: 19.6 t ADT: 2,530
255TH STREET
FairOver: SLIP-UP CREEK
5N & 3.9W CORSON, Minnehaha, SD
Built 1982 Load: 19.6 t ADT: 52
479TH AVENUE
FairOver: TRIB TO SLIP-UP CK
5E & 0.5S BALTIC, Minnehaha, SD
Built 1940 Load: 19.6 t ADT: 27
481ST AVENUE
FairOver: TRIB TO W PIPESTONE CK
1W & 3.9N CORSON, Minnehaha, SD
Built 2008 Load: 19.6 t ADT: 24
244TH STREET
FairOver: WEST PIPESTONE CREEK
6.7E & 1.7N DELL RAPIDS, Minnehaha, SD
Built 1986 Load: 19.6 t ADT: 377
JASPER ST, HWY 104
FairOver: WEST PIPESTONE CREEK
7.3E & 0.2N DELL RAPIDS, Minnehaha, SD
Built 1940 Load: 19.6 t ADT: 548
LOGAN STREET
FairOver: WEST PIPESTONE CREEK
7.7E & 1.5N BALTIC, Minnehaha, SD
Built 1989 Load: 19.6 t ADT: 20
482ND AVE, HWY 113
FairOver: WEST PIPESTONE CREEK
5W & 1.4N SHERMAN, Minnehaha, SD
Built 1971 Load: 19.6 t ADT: 428
253RD STREET
FairOver: WEST PIPESTONE CREEK
1.4W GARRETSON, Minnehaha, SD
Built 1972 Load: 19.6 t ADT: 80
252ND STREET
FairOver: WEST PIPESTONE CREEK
1.1W & 1N GARRETSON, Minnehaha, SD
Built 1976 Load: 19.6 t ADT: 72
Showing 901-950 of 5,905 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |