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
I-90 EB
UnknownOver: SR 9 SBL
13.36 E SR 13, LaGrange, IN
Built 2000 ADT: 12,225
I-90 WB & RAMP
UnknownOver: SR 9 NB
13.36 E SR 13, LaGrange, IN
Built 2000 ADT: 12,225
I-90 EB
UnknownOver: COUNTY ROAD 50 East
00.42 E SR 9, LaGrange, IN
Built 1956 ADT: 1,512
I-90 WB
UnknownOver: COUNTY ROAD 50 EAST
00.42 E SR 9, LaGrange, IN
Built 1956 ADT: 1,512
CR 100E/WEILAND
UnknownOver: I-90 EB
01.00 E SR 9, LaGrange, IN
Built 1956 ADT: 11,010
CR 250E
UnknownOver: I-90 WB
02.51 E SR 9, LaGrange, IN
Built 1956 ADT: 11,010
CR 375E
UnknownOver: I-90 WB
03.78 E SR 9, LaGrange, IN
Built 1956 ADT: 11,010
CR 475E
UnknownOver: I-90 WB
04.78 E SR 9, LaGrange, IN
Built 1956 ADT: 11,010
CR 575E
UnknownOver: I-90 WB
05.83 E SR 9, LaGrange, IN
Built 1956 ADT: 11,010
I-90 EB
UnknownOver: COUNTY ROAD 700 EAST
06.72 W SR 327, LaGrange, IN
Built 1956 ADT: 120
I-90 WB
UnknownOver: COUNTY ROAD 700 EAST
06.72 W SR 327, LaGrange, IN
Built 1956 ADT: 120
CR 750N
UnknownOver: I-90 WB
05.11 W SR 327, LaGrange, IN
Built 1956 ADT: 11,010
I-90 WB
UnknownOver: CR 1050E
02.74 W SR 327, LaGrange, IN
Built 1956 ADT: 10,456
CR 1100E
UnknownOver: I-90 WB
02.14 W SR 327, LaGrange, IN
Built 1956 ADT: 11,010
CR 850W
UnknownOver: I-90 WB
01.05 E SR 327, LaGrange, IN
Built 1956 ADT: 11,010
CONRAIL RR
UnknownOver: SR2
00.52 E US 41, Lake, IN
Built 1930 ADT: 8,709
N&S RR
UnknownOver: US 231
00.23 S US 41, Lake, IN
Built 1934 ADT: 11,561
CSX RR
UnknownOver: US 231
00.82 S US 41, Lake, IN
Built 1934 ADT: 11,561
US 12/20/41 WB
UnknownOver: HAMMOND MARINA DR
00.58 W US 41, Lake, IN
Built 1996 ADT: 12,409
US 12
UnknownOver: KENNEDY AVE
01.01 E US 20, Lake, IN
Built 1994 ADT: 4,845
CAREY ST
UnknownOver: US 12
01.19 E US 20, Lake, IN
Built 1994 ADT: 118
US 12 WB
UnknownOver: ABANDONED RR
00.69 E US 20, Lake, IN
Built 1935 ADT: 11,390
NICTD RR
UnknownOver: US 20
00.01 E I-90, Lake, IN
Built 1956 ADT: 19,844
US 20
UnknownOver: KENNEDY AVENUE
00.99 E SR-152, Lake, IN
Built 1934 ADT: 8,802
CONRAIL RR
UnknownOver: US 30 EB
00.24 E US 41, Lake, IN
Built 1937 ADT: 20,547
CONRAIL RR
UnknownOver: US 30 WB
00.24 E US 41, Lake, IN
Built 1927 ADT: 20,547
US 41 NB
UnknownOver: 236TH AVENUE
04.54 S SR-2, Lake, IN
Built 1955 ADT: 132
US 41 SB
UnknownOver: 236TH AVENUE
04.54 S SR-2, Lake, IN
Built 1955 ADT: 132
CALUMET AVE
UnknownOver: I-80/94 EBL CD/RAMP
03.78 S SR-312, Lake, IN
Built 1992 ADT: 11,450
US 41 SB ON RAMP J
UnknownOver: CALUMET AVE NB & RAMP
00.10 W US 41, Lake, IN
Built 1992 ADT: 34,121
US 41
UnknownOver: LOGAN STREET (ENDS)
02.94 N I-80, Lake, IN
Built 1974 ADT: 109
US 6
UnknownOver: I-80/I-94 EBL
02.27 W SR-51, Lake, IN
Built 1960 ADT: 40,377
NICTD RR
UnknownOver: SR-53 SBL
00.05 N US 12, Lake, IN
Built 1986 ADT: 4,870
SR 912 EB
UnknownOver: US 41/CALUMET AVE
00.81 E I-90, Lake, IN
Built 1984 ADT: 425
SR 912 WB
UnknownOver: US 41/CALUMET AVE
00.81 E I-90, Lake, IN
Built 1984 ADT: 343
AMOCO SERVICE RD
UnknownOver: SR 912
00.45 W US 12/20, Lake, IN
Built 1986 ADT: 118
SR 912
UnknownOver: PRIVATE RD
01.46 E US-41, Lake, IN
Built 1986 ADT: 10
DOCK STREET
UnknownOver: DICKEY RD; RAILROAD
01.66 E OF W JCT US-12, Lake, IN
Built 1980 ADT: 7,750
MICHIGAN AVENUE
UnknownOver: SR-912 WBL
01.34 W US-12, Lake, IN
Built 1959 ADT: 36,100
RAMP B
UnknownOver: RAMP B
01.33 W US-12, Lake, IN
Built 1959 ADT: 2,452
RAMP B
UnknownOver: RAMP H
01.33 W US-12, Lake, IN
Built 1980 ADT: 3,077
SR 912
UnknownOver: Guthrie St. WB
00.32 W US 12, Lake, IN
Built 1980 ADT: 3,499
SR 912 EB
UnknownOver: INDUSTRIAL HIGHWAY EBL
00.52 W SR-312, Lake, IN
Built 1970 ADT: 7,750
US 12 WB
UnknownOver: SR 912 WB
00.52 W SR 312, Lake, IN
Built 1970 ADT: 6,954
SR 912 RAMP SSE
UnknownOver: INDUSTRIAL HIGHWAY EBL
00.52 W SR-912, Lake, IN
Built 1977 ADT: 7,500
SR 912 RAMP SSE
UnknownOver: US 12 WBL RAMP
00.42 W SR-312, Lake, IN
Built 1977 ADT: 7,750
US 12/SR 912
UnknownOver: SR-912 SOUTH-NORTH RAMP
01.27 W I-90, Lake, IN
Built 1965 ADT: 3,252
ACCESS RD
UnknownOver: US 12/SR 912
00.49 W I-90, Lake, IN
Built 1965 ADT: 1,721
US 12/SR 912
UnknownOver: SOUTH PRIVATE ROAD
00.19 W I-90, Lake, IN
Built 1965 ADT: 20
I-90 EB
UnknownOver: US 12/SR 912
01.27 E SR 312, Lake, IN
Built 1956 ADT: 12,434
Showing 801-850 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 |