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
250th Street
FairOver: E. Fork of Vermillion Rv
2.5N & 9.6E of Salem, McCook, SD
Built 1972 Load: 24.5 t ADT: 66
451st Avenue
FairOver: Trib. to E Fork Verm Rv
5.7S & 5E of Canistota, McCook, SD
Built 1984 Load: 24.5 t ADT: 160
Valley Road
FairOver: Trib. to E Fork Verm Rv
0.3E & 1.6N of Montrose, McCook, SD
Built 1957 Load: 24.5 t ADT: 400
Hawk Drive
FairOver: E. Fork of Vermillion Rv
3.5N & 5.7E of Canistota, McCook, SD
Built 1993 Load: 24.5 t ADT: 66
267th Street
FairOver: E. Fork of Vermillion Rv
12.5S & 1.3E of Montrose, McCook, SD
Built 1976 Load: 24.5 t ADT: 40
371st Avenue
FairOver: Willow Creek
2.1 S & 8 E of Leola, McPherson, SD
Built 1990 Load: 24.5 t ADT: 95
WHITEWOOD VALLEYRD
FairOver: CROW CK
2 W & 9.9 N STURGIS, Meade, SD
Built 1972 Load: 24.5 t ADT: 25
194TH ST.
FairOver: WHITEWOOD CK
12.0 N 0.6 W STURGIS, Meade, SD
Built 1977 Load: 24.5 t ADT: 24
ELK CREEK RD.
FairOver: ELK CK
0.2 S 2.7 E PIEDMONT, Meade, SD
Built 1951 Load: 24.5 t ADT: 240
MIDDLE ALKALI RD.
FairOver: CK
13E & 2.1S STURGIS, Meade, SD
Built 1965 Load: 24.5 t ADT: 15
143RD AVE.
FairOver: BOXELDER CK
16E & 17.7S STURGIS, Meade, SD
Built 1966 Load: 24.5 t ADT: 15
ELK VALE RD.
FairOver: ALKALI CK
19E & 3.3S STURGIS, Meade, SD
Built 1986 Load: 24.5 t ADT: 53
ANTELOPE CREEK RD
FairOver: ANTELOPE CK
24E & 13.8S STURGIS, Meade, SD
Built 1976 Load: 24.5 t ADT: 56
HEREFORD RD.
FairOver: CK
29E & 3.4N STURGIS, Meade, SD
Built 1960 Load: 24.5 t ADT: 55
BREHM RD.
FairOver: ELK CK
29E & 15.7S STURGIS, Meade, SD
Built 1995 Load: 24.5 t ADT: 10
OLD 212(KILLDEAR)
FairOver: CAMP CK
7S &0.2W MUD BUTTE, Meade, SD
Built 1967 Load: 24.5 t ADT: 15
OLD212 KILLDEER RD
FairOver: MUD BUTTE CK
2 S MUDBUTTE, Meade, SD
Built 1952 Load: 24.5 t ADT: 15
STONEVILLE RD.
FairOver: SULFUR CK
12.5 S JCT US 212, Meade, SD
Built 1970 Load: 24.5 t ADT: 233
STONEVILLE RD.
FairOver: HORSE CREEK
7.5 S JCT US 212, Meade, SD
Built 1974 Load: 24.5 t ADT: 233
PLEASANT VIEW RD.
FairOver: RED OWL CK
0.5S & 3.3E RED OWL, Meade, SD
Built 1955 Load: 24.5 t ADT: 10
FOX RIDGE RD.
FairOver: PINE CK
1.8E 6.2S OPAL, Meade, SD
Built 1999 Load: 24.5 t ADT: 33
FOX RIDGE RD.
FairOver: SULPHUR CK
5E & 5.8N RED OWL, Meade, SD
Built 1995 Load: 24.5 t ADT: 20
AVANCE RD.
FairOver: CHERRY CK
13N&18.4EUNIONCENTER, Meade, SD
Built 1984 Load: 24.5 t ADT: 33
OLD MARCUS RD
FairOver: RED OWL CK
7.9 W & 23.7S FAITH, Meade, SD
Built 1982 Load: 24.5 t ADT: 45
BRUSHIE CREEK RD.
FairOver: CK
12 S & 6.1 W FAITH, Meade, SD
Built 1970 Load: 24.5 t ADT: 23
OLD MARCUS RD.
FairOver: RED OWL CK
8 N 1 E PLAINVIEW, Meade, SD
Built 1991 Load: 24.5 t ADT: 26
225 ST
FairOver: WEST REDSTONE CK
3S & 6.8W CARTHAGE, Miner, SD
Built 1989 Load: 24.5 t ADT: 10
230 ST
FairOver: DRY RUN CK
3.0N & 0.6W FEDORA, Miner, SD
Built 1974 Load: 24.5 t ADT: 75
421 AVE
FairOver: CK
3.5N FEDORA, Miner, SD
Built 1973 Load: 24.5 t ADT: 85
227 ST
FairOver: DRY RUN CK
5.0S & 3.1W CARTHAGE, Miner, SD
Built 1973 Load: 24.5 t ADT: 75
424 AVE
FairOver: ROCK CK
11.0W & 1.6S CANOVA, Miner, SD
Built 1973 Load: 24.5 t ADT: 75
427 AVE
FairOver: ROCK CK
2.0E & 1.6S CARTHAGE, Miner, SD
Built 1901 Load: 24.5 t ADT: 75
225 ST
FairOver: CREEK
3S & 2.5 E Carthage, Miner, SD
Built 1973 Load: 24.5 t ADT: 35
236 ST
FairOver: ROCK CK
3S & 6.2W HOWARD, Miner, SD
Built 1976 Load: 24.5 t ADT: 25
434 AVE
FairOver: WEST FORK VERMILLION RV
4.3N HOWARD, Miner, SD
Built 1940 Load: 24.5 t ADT: 40
236 ST
FairOver: WEST FORK VERMILLION RV
3S & 1.2E OF HOWARD, Miner, SD
Built 1998 Load: 24.5 t ADT: 15
237 ST
FairOver: WEST FORK VERMILLION RV
1.3E & 4S HOWARD, Miner, SD
Built 1986 Load: 24.5 t ADT: 90
241 ST
FairOver: WEST FORK VERMILLION RV
1.0 M N. & 1.2 E. CANOVA, Miner, SD
Built 1973 Load: 24.5 t ADT: 250
437 AVE
FairOver: WEST FORK VERMILLION RV
3E & 9.6S HOWARD, Miner, SD
Built 1961 Load: 24.5 t ADT: 25
243 ST
FairOver: WEST FORK VERMILLION RV
10S & 3.2E HOWARD, Miner, SD
Built 1961 Load: 24.5 t ADT: 25
WESTERN AVENUE
FairOver: TRIB TO SKUNK CR
CITY OF HARTFORD, Minnehaha, SD
Built 1952 Load: 24.5 t ADT: 1,535
ELLIS RD, HWY 139
FairOver: TRIB TO WILLOW CK
2.2N ELLIS, Minnehaha, SD
Built 1954 Load: 24.5 t ADT: 3,273
476TH AVENUE
FairOver: TRIB TO SILVER CREEK
2E & 3.1S BALTIC, Minnehaha, SD
Built 1938 Load: 24.5 t ADT: 41
PERRY PLACE
FairOver: TRIB TO BIG SIOUX RV
4.6S & 1.8W BRANDON, Minnehaha, SD
Built 1935 Load: 24.5 t ADT: 14
HOLLY BLVD,HWY 140
FairOver: BIG SIOUX RIVER
1.4W BRANDON, Minnehaha, SD
Built 1999 Load: 24.5 t ADT: 9,978
264TH STREET
FairOver: BEAVER CREEK
2.5S & 0.6W BRANDON, Minnehaha, SD
Built 1992 Load: 24.5 t ADT: 126
ASPEN BLVD,HWY 138
FairOver: SPLIT ROCK CREEK
0.6E & 0.5S BRANDON, Minnehaha, SD
Built 1988 Load: 24.5 t ADT: 7,782
220th Street
FairOver: Lake Campbell
Lake Campbell, Moody, SD
Built 1965 Load: 24.5 t ADT: 200
471st Avenue
FairOver: Trib. to Big Sioux River
1E & 10.9N of Colman, Moody, SD
Built 1925 Load: 24.5 t ADT: 614
471st Avenue
FairOver: Trib. to Jack Moore Crk
1E & 4.6N of Colman, Moody, SD
Built 1925 Load: 24.5 t ADT: 330
Showing 1,551-1,600 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.