Total Bridges
18,630
Public highway bridges in Indiana
State profile · Below national median SD
Indiana bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Indiana — drawn straight from the FHWA National Bridge Inventory.
- 18,630
- Public bridges
- 36.1%
- Good condition
- 4.9%
- Poor condition
- 4.9%
- Structurally deficient
Good Condition
36.1%
6,733 bridges rated 7-9
-13.9pp vs 50% benchmark
Poor Condition
4.9%
920 bridges rated 0-4
Structurally Deficient
4.9%
920 bridges flagged for repair priority
-2.1pp vs national avg 7.0%
Indiana vs national bridge condition
Indiana — Good condition share 36.1%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Indiana — Structurally deficient share 16.5%
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 — Indiana (FHWA NBI)
Counties (92)
Adams 191 Allen 601 Bartholomew 263 Benton 147 Blackford 56 Boone 235 Brown 34 Carroll 159 Cass 161 Clark 144 Clay 144 Clinton 205 Crawford 117 Daviess 205 DeKalb 147 Dearborn 139 Decatur 141 Delaware 272 Dubois 214 Elkhart 272 Fayette 98 Floyd 144 Fountain 195 Franklin 158 Fulton 82 Gibson 348 Grant 278 Greene 233 Hamilton 440 Hancock 189 Harrison 124 Hendricks 341 Henry 192 Howard 194 Huntington 183 Jackson 308 Jasper 186 Jay 124 Jefferson 151 Jennings 148 Johnson 213 Knox 282 Kosciusko 145 LaGrange 100 LaPorte 229 Lake 488 Lawrence 158 Madison 297 Marion 964 Marshall 185 Martin 104 Miami 165 Monroe 226 Montgomery 241 Morgan 241 Newton 167 Noble 88 Ohio 41 Orange 133 Owen 143 Parke 195 Perry 146 Pike 164 Porter 280 Posey 205 Pulaski 100 Putnam 284 Randolph 253 Ripley 188 Rush 223 Scott 113 Shelby 243 Spencer 241 St. Joseph 228 Starke 85 Steuben 134 Sullivan 208 Switzerland 62 Tippecanoe 329 Tipton 109 Union 58 Vanderburgh 286 Vermillion 125 Vigo 294 Wabash 189 Warren 136 Warrick 183 Washington 173 Wayne 342 Wells 155 White 214 Whitley 112
Indiana 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 Indiana on the same metric.
05
Arkansas
4.71% top marginal rate
53
Washington
4.81% top marginal rate
18
Indiana
4.94% top marginal rate
20
Kansas
5.25% top marginal rate
56
Wyoming
5.41% top marginal rate
Bridges Needing Most Attention in Indiana
Six lowest-condition bridges in Indiana, ranked by composite NBI rating. Each is inspected at least every 24 months.
MOUNT LIBERTY ROAD
Structurally DeficientOver: MOUNT LIBERTY CREEK
00.10 S 4 MILE RD, Brown, IN
Built 1929 Load: 2.7 t ADT: 150
CR 250W
PoorOver: JONES CREEK
00.70 S of CR 250 N, Putnam, IN
Built 1925 Load: 2.7 t ADT: 180
CR 675W
Structurally DeficientOver: BRANCH OF LEATHERMAN CR
00.20 S of CR 125 N, Putnam, IN
Built 1930 Load: 2.7 t ADT: 130
CR 275S
Structurally DeficientOver: CONRAIL RR
00.50 E of CR 600 W, Putnam, IN
Built 1910 Load: 2.7 t ADT: 130
SHAPED CHARGE ROAD
PoorOver: LITTLE OTTER CREEK
1.2 MILES NORTH OF K RD, Ripley, IN
Built 1899 Load: 2.7 t ADT: 2
WONJU ROAD
PoorOver: TRIBUTARY OF BIG CREEK
0.3 MILE NORTH OF G ROAD, Ripley, IN
Built 1990 Load: 2.7 t ADT: 10
All Bridges in Indiana
NORTH RIVER ROAD
UnknownOver: I465 EBL
02.84 W I-69, Marion, IN
Built 2010 ADT: 74,728
WEST HANNA AVENUE
UnknownOver: I-465 NB
00.44 S I-70, Marion, IN
Built 2009 ADT: 54,230
W 34TH STREET
UnknownOver: I-465 NB
00.71 N I-74, Marion, IN
Built 2008 ADT: 67,873
W 46TH STREET
UnknownOver: I-465 NB
01.81 S OF I-65, Marion, IN
Built 2008 ADT: 58,749
US 36/ROCKVILLE RD
UnknownOver: I-465 SB
06.98 E SR 267, Marion, IN
Built 2009 ADT: 71,031
W 21ST STREET
UnknownOver: I-465 SB
00.80 S I-74, Marion, IN
Built 2009 ADT: 74,625
W 38TH STREET
UnknownOver: I-465 NB RAMP
01.23 N I-74, Marion, IN
Built 2008 ADT: 4,256
I-70
UnknownOver: SHERMAN DRIVE
03.91 W I-465, Marion, IN
Built 2007 ADT: 10,375
I-465 EB
UnknownOver: KEYSTONE AVE SBL RAMP
03.16 E US 31, Marion, IN
Built 2010 ADT: 10,000
I-465 WB
UnknownOver: KEYSTONE AVE NBL RAMP
03.16 E US 31, Marion, IN
Built 2010 ADT: 10,000
I-465 NB
UnknownOver: US 40/WASHINGTON ST EBL
02.15 S US 36, Marion, IN
Built 2009 ADT: 13,178
I-465 SB
UnknownOver: US 40/WASHINGTON ST WBL
02.15 S US 36, Marion, IN
Built 2009 ADT: 13,260
I-465 EB
UnknownOver: COLLEGE AVE
00.64 E US 31, Marion, IN
Built 2010 ADT: 12,437
I-465 WB
UnknownOver: COLLEGE AVE
00.64 E US 31, Marion, IN
Built 2010 ADT: 12,437
I465 NB to I70 WB
UnknownOver: I-70 EB
00.13 E I-465, Marion, IN
Built 2011 ADT: 21,150
RAMP I70 EB-I465NB
UnknownOver: I-465 SB CD
00.79 N SR 67, Marion, IN
Built 2011 ADT: 6,015
I-70 EB
UnknownOver: I-465 SB CD
06.53 E SR 267, Marion, IN
Built 2011 ADT: 14,325
I-70 WB
UnknownOver: I-465 SB CD
06.53 E SR 267, Marion, IN
Built 2011 ADT: 14,325
SAM JONES EXPRWY
UnknownOver: I-465 SB
01.28 S US 40, Marion, IN
Built 2011 ADT: 56,731
I-70 EB
UnknownOver: RAMP I-70 EB to I-465 NB
00.08 E I-465, Marion, IN
Built 2011 ADT: 19,625
I-70 WB
UnknownOver: RAMP I-70 EB to I-465 NB
00.08 E I-465, Marion, IN
Built 2011 ADT: 19,625
E 75TH STREET
UnknownOver: I-465 SBL
00.39 S I-69, Marion, IN
Built 2011 ADT: 97,835
E 82ND STREET EB
UnknownOver: I-465 EBL
02.54 E SR 431, Marion, IN
Built 2012 ADT: 68,999
E 82ND STREET WB
UnknownOver: I-465 WBL
02.54 E SR 431, Marion, IN
Built 2012 ADT: 76,325
SR 37 NBL
UnknownOver: COUNTY LINE ROAD WBL
04.45 S I-465, Marion, IN
Built 2023 ADT: 11,250
SR 37 SBL
UnknownOver: COUNTY LINE ROAD WBL
04.45 S I-465, Marion, IN
Built 2022 ADT: 11,250
SR 37 NBL
UnknownOver: WICKER ROAD
03.86 S I-465, Marion, IN
Built 2023 ADT: 3,300
SR 37 SBL
UnknownOver: WICKER ROAD
03.86 S I-465, Marion, IN
Built 2022 ADT: 3,300
MADISON AVENUE
UnknownOver: I-465 EB
00.57 E US 31, Marion, IN
Built 2022 ADT: 59,987
SR 37 NBL
UnknownOver: BANTA ROAD
1.75 S I-465, Marion, IN
Built 2022 ADT: 7,800
SOUTHPORT ROAD
UnknownOver: SR 37 (I-69) SBL
2.33 S I-465, Marion, IN
Built 2022 ADT: 36,900
I-65 NB
UnknownOver: WASHINGTON STREET
00.92 N I-70, Marion, IN
Built 2022 ADT: 30,000
I-65 SB
UnknownOver: WASHINGTON STREET
00.92 N I-70, Marion, IN
Built 2022 ADT: 30,000
I-65 SB
UnknownOver: EAST TENTH STREET
01.92 N I-70, Marion, IN
Built 2023 ADT: 6,850
I-70 WB & I-65 SB
UnknownOver: EAST 10TH STREET
00.52 E I-65, Marion, IN
Built 2023 ADT: 6,850
I-65 SB
UnknownOver: I-70 WB & I-70 WB-CD
02.21 N I-70, Marion, IN
Built 2023 ADT: 36,289
I-65 NB
UnknownOver: I-70 WB & I-70 WB CD Ram
02.21 N I-70, Marion, IN
Built 2023 ADT: 11,856
I-65 NBL Ramp from
UnknownOver: I-65 NBL Mainline Ramp
02.12 N I-70, Marion, IN
Built 2023 ADT: 34,480
I-70 EB Ramp from
UnknownOver: I-65 NB Mainline Ramp
00.48 E I-65, Marion, IN
Built 2023 ADT: 34,480
ROCK ISLAND ACCESS
UnknownOver: 86TH ST
00.58 E ZIONSVILLE ROAD, Marion, IN
Built 1995 ADT: 369
38TH STREET WB
UnknownOver: GUION ROAD
00.15 E I-65, Marion, IN
Built 1964 ADT: 10,600
38TH STREET EB
UnknownOver: GUION ROAD
00.50 E OF LAFAYETTE ROAD, Marion, IN
Built 1964 ADT: 10,600
38TH STREET EB
UnknownOver: CENTRAL CANAL TRAIL
00.35 W OF MICHIGAN ROAD, Marion, IN
Built 1960 ADT: 10
38TH STREET WB
UnknownOver: WHITE R PARKWAY W DR
00.48 W MICHIGAN ROAD, Marion, IN
Built 1962 ADT: 3,748
38TH STREET EB
UnknownOver: WHITE R PARKWAY W DR
00.48 W MICHIGAN ROAD, Marion, IN
Built 1962 ADT: 3,748
30TH ST
UnknownOver: MASSACHUSETTS/CONRAIL
00.10 W OF EMERSON AVE, Marion, IN
Built 1969 ADT: 10,260
EMERSON AVENUE
UnknownOver: MASSACHUSETTS AVENUE
00.60 N I-70, Marion, IN
Built 1969 ADT: 12,700
LYNHURST DRIVE SB
UnknownOver: SAM JONES EXPRWY
00.40 W I-70, Marion, IN
Built 1968 ADT: 7,306
EXECUTIVE DRIVE
UnknownOver: SAM JONES EXPWY WB
00.40 E I-465, Marion, IN
Built 1963 ADT: 19,031
RAYMOND ST
UnknownOver: GRAVEL RD 1 EAST
00.80 E HARDING ST, Marion, IN
Built 1958 ADT: 10
Showing 1,351-1,400 of 18,630 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 |