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
I090 E
UnknownOver: SD038 P
3.2 E SD 37 S INTERCHANGE, Hanson, SD
Built 1965 ADT: 1,786
416 AVE (FAS 6229)
UnknownOver: I090
4 E DAVISON CO LINE, Hanson, SD
Built 1966 ADT: 11,820
I090 W
UnknownOver: 419 AVE
2.1 W SD 262 INTERCH, Hanson, SD
Built 1965 ADT: 70
I090 E
UnknownOver: 419 AVE
2.1 W SD 262 INTERCH, Hanson, SD
Built 1965 ADT: 70
SD262
UnknownOver: I090
SD 262 INTERCHANGE, Hanson, SD
Built 1965 ADT: 11,790
424 AVE
UnknownOver: I090
3 E SD 262 INTERCH, Hanson, SD
Built 1965 ADT: 11,790
SD025
UnknownOver: I090
SD 25 INTERCHANGE, Hanson, SD
Built 1965 ADT: 10,520
428 AVE
UnknownOver: I090
1 E SD 25 INTERCH, Hanson, SD
Built 1965 ADT: 10,520
RCP&E RR
UnknownOver: US014
DOWNTOWN PIERRE, Hughes, SD
Built 1920 ADT: 4,368
I090 W
UnknownOver: COUNTY RD
3.6 NW SD 240 INTERCHANGE, Jackson, SD
Built 1974 ADT: 27
I090 E
UnknownOver: COUNTY RD
3.6 NW SD 240 INTERCHANGE, Jackson, SD
Built 1974 ADT: 27
SD240
UnknownOver: I090
CACTUS FLAT INTERCHANGE, Jackson, SD
Built 1974 ADT: 6,560
I090 W
UnknownOver: FAIRVIEW RD (FAS 6614)
7.0 W SD 73 N INTERCH, Jackson, SD
Built 1967 ADT: 35
I090 E
UnknownOver: FAIRVIEW RD (FAS 6614)
7.0 W SD 73 N INTERCH, Jackson, SD
Built 1967 ADT: 35
I090 W
UnknownOver: COUNTY RD
4.0 W SD 73 N INTERCH, Jackson, SD
Built 1967 ADT: 10
I090 E
UnknownOver: COUNTY RD
4.0 W SD 73 N INTERCH, Jackson, SD
Built 1967 ADT: 10
I090 W
UnknownOver: SD073, CK
SD 73 N INTERCHANGE, Jackson, SD
Built 1967 ADT: 751
I090 E
UnknownOver: SD073, CK
SD 73 N INTERCHANGE, Jackson, SD
Built 1967 ADT: 751
I090 W
UnknownOver: COUNTY RD
3 E SD 73 N INTERCH, Jackson, SD
Built 1967 ADT: 25
I090 E
UnknownOver: COUNTY RD
3 E SD 73 N INTERCH, Jackson, SD
Built 1968 ADT: 25
SD073
UnknownOver: I090
SD 73 S INTERCHANGE, Jackson, SD
Built 1966 ADT: 6,520
I090 W
UnknownOver: SD248 P
2.2 E SD 73 S INTERCHANGE, Jackson, SD
Built 1968 ADT: 290
I090 E
UnknownOver: SD248 P
2.2 E SD 73 S INTERCHANGE, Jackson, SD
Built 1968 ADT: 290
I090 W
UnknownOver: INDIAN CK RD
5.2 E SD 73 S INTERCH, Jackson, SD
Built 1968 ADT: 35
I090 E
UnknownOver: INDIAN CK RD
5.2 E SD 73 S INTERCH, Jackson, SD
Built 1968 ADT: 35
I090 W
UnknownOver: COMMUNITY WELL RD
3.8 W SD 63 S INTERCH, Jackson, SD
Built 1968 ADT: 30
I090 E
UnknownOver: COMMUNITY WELL RD
3.8 W SD 63 S INTERCH, Jackson, SD
Built 1968 ADT: 30
I090 W
UnknownOver: SD063
SD 63 S INTERCHANGE, Jackson, SD
Built 1968 ADT: 95
I090 E
UnknownOver: SD063
SD 63 S INTERCHANGE, Jackson, SD
Built 1968 ADT: 95
I090 W
UnknownOver: BRAVE BULL RD
1.4 E SD 63 S INTERCH, Jackson, SD
Built 1968 ADT: 20
I090 E
UnknownOver: BRAVE BULL RD
1.4 E SD 63 S INTERCH, Jackson, SD
Built 1968 ADT: 20
I090 W
UnknownOver: PERAULT RD
2.5 SW SD 63 N INTERCH, Jackson, SD
Built 2007 ADT: 30
I090 E
UnknownOver: PERAULT RD
2.5 SW SD 63 N INTERCH, Jackson, SD
Built 2008 ADT: 30
I090 W
UnknownOver: SD063
SD 63 N INTERCHANGE, Jackson, SD
Built 1968 ADT: 282
I090 E
UnknownOver: SD063
SD 63 N INTERCHANGE, Jackson, SD
Built 1968 ADT: 282
I090 W
UnknownOver: STAMFORD RD
2.3 E SD 63 N INTERCHANGE, Jackson, SD
Built 1968 ADT: 20
I090 E
UnknownOver: STAMFORD RD
2.3 E SD 63 N INTERCHANGE, Jackson, SD
Built 1968 ADT: 20
256 AVE (FAS 6511)
UnknownOver: I090
6.2 W OKATON INTERCHANGE, Jones, SD
Built 1969 ADT: 6,310
I090 W
UnknownOver: 259 AVE
3.2 W OKATON INTERCH, Jones, SD
Built 1969 ADT: 65
I090 E
UnknownOver: 259 AVE
3.2 W OKATON INTERCH, Jones, SD
Built 1969 ADT: 65
I090 W
UnknownOver: 262 AVE
OKATON INTERCHANGE, Jones, SD
Built 1969 ADT: 149
I090 E
UnknownOver: 262 AVE
OKATON INTERCHANGE, Jones, SD
Built 1969 ADT: 149
I090 W
UnknownOver: 264 AVE
2.2 E OKATON INTERCH, Jones, SD
Built 1969 ADT: 60
I090 E
UnknownOver: 264 AVE
2.2 E OKATON INTERCH, Jones, SD
Built 1969 ADT: 60
SD248
UnknownOver: I090
MURDO INTERCHANGE, Jones, SD
Built 1969 ADT: 6,130
US083
UnknownOver: I090
US 83 S INTERCHANGE, Jones, SD
Built 1969 ADT: 6,140
I090 W
UnknownOver: 242 ST
2.2 E US 83 S INTERCH, Jones, SD
Built 1970 ADT: 30
I090 E
UnknownOver: 242 ST
2.2 E US 83 S INTERCH, Jones, SD
Built 1970 ADT: 30
I090 W
UnknownOver: 277 AVE
2 W DRAPER INTERCH, Jones, SD
Built 1970 ADT: 25
I090 E
UnknownOver: 277 AVE
2 W DRAPER INTERCH, Jones, SD
Built 1970 ADT: 25
Showing 101-150 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.