State profile · Below median Poor share

Indiana bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Indiana.

19,495
Public bridges
42.2%
Good condition
5.2%
Poor condition

Indiana holds 19,495 public highway bridges (#11 of 52 by inventory) with a 5.22% Poor share (#32 of 52 by Poor share).

That is 5.2% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 21 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

19,495

Public highway bridges in Indiana

Good Condition

42.2%

8,224 bridges rated 7-9

-7.8pp vs 50% benchmark

Poor Condition

5.2%

1,018 bridges whose lowest applicable component is rated 0-4

-2.3pp vs national avg 7.5%

Indiana vs national bridge condition

Indiana - Good condition share 42.2%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Indiana - Poor-condition share 17.4%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Indiana in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Indiana has 19,495 bridges and a 5.2% Poor-condition share in the 2024 NBI, rank #21 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Indiana has 19,495 bridges and a 5.2% Poor-condition share in the 2024 NBI, rank #21 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Indiana vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

19,495 11th of 54 higher than 43 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Indiana

The highlighted point is Indiana: 19,495 bridges and 5.22% in Poor condition, rank #21 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Indiana on that same Poor-share ordering:

  • Colorado: 8,965 bridges · 4.82% Poor
  • Idaho: 4,616 bridges · 4.90% Poor
  • Indiana: 19,495 bridges · 5.22% Poor
  • Kansas: 24,894 bridges · 5.26% Poor
  • Arkansas: 12,974 bridges · 5.43% Poor

The full national sortable table lives on the rankings page.

Material families in Indiana

Exclusive FHWA material families across all 19,495 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Indiana’s inventory

State agency holds 31.6% of the 19,495 public highway bridges filed under Indiana in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Indiana’s bridges were built

Pre-1950 construction accounts for 13.0% of the 19,495 bridges with a recorded original year in Indiana. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Indiana42.2%52.6%GoodFairPoor
Bridge inventory deck-condition mix - Indiana (FHWA NBI)

Counties (92)

Adams 194 Allen 613 Bartholomew 269 Benton 151 Blackford 73 Boone 293 Brown 114 Carroll 161 Cass 185 Clark 257 Clay 185 Clinton 210 Crawford 123 Daviess 221 DeKalb 149 Dearborn 145 Decatur 220 Delaware 277 Dubois 220 Elkhart 278 Fayette 100 Floyd 145 Fountain 197 Franklin 159 Fulton 85 Gibson 362 Grant 280 Greene 239 Hamilton 454 Hancock 201 Harrison 127 Hendricks 355 Henry 206 Howard 194 Huntington 187 Jackson 321 Jasper 189 Jay 191 Jefferson 153 Jennings 163 Johnson 230 Knox 290 Kosciusko 152 LaGrange 100 LaPorte 227 Lake 501 Lawrence 165 Madison 301 Marion 958 Marshall 183 Martin 104 Miami 171 Monroe 232 Montgomery 252 Morgan 252 Newton 172 Noble 89 Ohio 41 Orange 137 Owen 150 Parke 200 Perry 151 Pike 172 Porter 277 Posey 208 Pulaski 102 Putnam 290 Randolph 257 Ripley 191 Rush 227 Scott 118 Shelby 247 Spencer 244 St. Joseph 227 Starke 86 Steuben 135 Sullivan 217 Switzerland 62 Tippecanoe 330 Tipton 113 Union 58 Vanderburgh 279 Vermillion 127 Vigo 296 Wabash 192 Warren 135 Warrick 197 Washington 174 Wayne 343 Wells 158 White 214 Whitley 115

Indiana 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 Indiana on the same metric.

CO

Colorado

4.82% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

ID

Idaho

4.90% top marginal rate
Structure
Progressive
Burden @ $100K
$4,616
Selected

IN

Indiana

5.22% top marginal rate
Structure
Progressive
Burden @ $100K
$19,495

KS

Kansas

5.26% top marginal rate
Structure
Progressive
Burden @ $100K
$24,894

AR

Arkansas

5.43% top marginal rate
Structure
Progressive
Burden @ $100K
$12,974

Bridges Needing Most Attention in Indiana

Six lowest-condition bridges in Indiana, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

SR 66 ILL SR 14

Poor

Over: WABASH RIVER & SERVICE R

00.35 W of SR 69, Posey, IN

Built 1930 Load: 0.0 t ADT: 1,065

SERVICE ROAD

Poor

Over: MARIO CREEK

INDIANA WOMEN PRISON, Marion, IN

Built 1920 Load: 0.0 t ADT: 1

PARK ROAD/TRAIL

Poor

Over: UNT MUD/RIVIR LAKES

00.00 CHAIN-O-LAKES ST PK, Noble, IN

Built 1893 Load: 0.0 t

ENTRANCE

Poor

Over: MADISON RR

00.00 MADISON ST HOSPITAL, Jefferson, IN

Built 1930 Load: 0.0 t ADT: 133

BOND CEMETERY ROAD

Poor

Over: NORTH FORK OF SALT CREEK

.2MI S OF GREEN VALLEY RD, Brown, IN

Built 1908 Load: 0.0 t

CR 200S

Poor

Over: BIRCH CREEK

00.70 E of 250 W, Clay, IN

Built 1910 Load: 0.0 t

All Bridges in Indiana

SR 38

Fair

Over: MCCLAMROCK DITCH

00.65 W S JCT US 421, Clinton, IN

Built 1968 Load: 36.3 t ADT: 761

US 40

Fair

Over: LITTLE WHITE LICK CREEK

03.35 W I-465, Marion, IN

Built 1941 Load: 36.3 t ADT: 31,078

US 41 NB RAMP

Fair

Over: EAGLE CREEK

00.31 S I-164, Vanderburgh, IN

Built 1990 Load: 36.3 t ADT: 2,570

US 41 NB

Fair

Over: KELSO CREEK

00.58 S US 50, Knox, IN

Built 1967 Load: 36.3 t ADT: 11,254

US 41

Fair

Over: SUGAR MILL CREEK

01.28 N SR 47, Parke, IN

Built 1925 Load: 36.3 t ADT: 1,433

US 231

Fair

Over: DEER CREEK

00.36 N US 40, Putnam, IN

Built 1932 Load: 36.3 t ADT: 10,560

SR 57

Fair

Over: DIXON DITCH

01.80 S US 231, Greene, IN

Built 1929 Load: 36.3 t ADT: 3,144

SR 58

Fair

Over: SOUTH FORK SALT CREEK

01.54 W SR 135, Jackson, IN

Built 1993 Load: 36.3 t ADT: 1,088

SR 59

Fair

Over: BR LITTLE RACCOON CREEK

00.65 N S JCT SR 236, Parke, IN

Built 1968 Load: 36.3 t ADT: 1,149

SR 63 SB

Fair

Over: FALL CREEK

00.97 N SR 263, Warren, IN

Built 1976 Load: 36.3 t ADT: 2,690

SR 105

Fair

Over: CARROLL DITCH

02.89 S SR 114, Huntington, IN

Built 1987 Load: 36.3 t ADT: 798

US 150

Fair

Over: SAM CREEK

05.96 E SR 550, Martin, IN

Built 1924 Load: 36.3 t ADT: 1,071

SR 161

Fair

Over: I-64 EB/WB

00.39 S SR 68, Warrick, IN

Built 1972 Load: 36.3 t ADT: 731

SR 168

Fair

Over: MILLERS BRANCH #1

01.88 W SR 57, Gibson, IN

Built 1958 Load: 36.3 t ADT: 1,246

SR 337

Fair

Over: I-64 EB/WB

01.39 N SR 135, Harrison, IN

Built 1974 Load: 36.3 t ADT: 1,641

I-469 EB RAMP

Fair

Over: HARBER DITCH

00.13 W SR 1, Allen, IN

Built 1989 Load: 36.3 t ADT: 2,106

I-64 EB

Fair

Over: LITTLE BLUE RIVER

00.49 E SR 37, Crawford, IN

Built 1973 Load: 36.3 t ADT: 17,178

I-64 WB

Fair

Over: LITTLE BLUE RIVER

00.49 E SR 37, Crawford, IN

Built 1973 Load: 36.3 t ADT: 17,178

CORYDON-RAMSEY RD

Fair

Over: I-64 EB/WB

00.53 E SR 337, Harrison, IN

Built 1974 Load: 36.3 t ADT: 2,719

I-64 EBL

Fair

Over: QUARRY ROAD

00.73 E US 150, Floyd, IN

Built 1965 Load: 36.3 t ADT: 34,509

206TH ST/CR 300 N

Fair

Over: I-65 SB/NB

00.73 N US 52, Boone, IN

Built 1970 Load: 36.3 t ADT: 1,852

I-69 NB

Fair

Over: TIPPEY DITCH

00.47 S SR 18, Grant, IN

Built 1963 Load: 36.3 t ADT: 14,414

I-69 SB

Fair

Over: TIPPEY DITCH

00.47 S SR 18, Grant, IN

Built 1963 Load: 36.3 t ADT: 14,634

I-70 EB

Fair

Over: GREENS FORK

03.81 E SR 1, Wayne, IN

Built 1962 Load: 36.3 t ADT: 20,025

I-70 WB

Fair

Over: GREENS FORK

03.81 E SR 1, Wayne, IN

Built 1962 Load: 36.3 t ADT: 20,025

CR 425 E/TEETER RD

Fair

Over: I-90 EB/WB

07.41 E SR 39, LaPorte, IN

Built 1956 Load: 36.3 t ADT: 608

I-90 TO US 31 RAMP

Fair

Over: I-90 EB/WB

00.09 E US 31, St. Joseph, IN

Built 1980 Load: 36.3 t ADT: 4,250

CR 1100 NORTH

Fair

Over: STAUB DITCH

0.60 MILES E OF CR 600 E, Adams, IN

Built 1930 Load: 36.3 t ADT: 81

CR 550 NORTH

Fair

Over: KOOS DITCH

0.10 MILES E OF PIQUA ROA, Adams, IN

Built 1940 Load: 36.3 t ADT: 386

CR 800 SOUTH

Fair

Over: JOHN THOMAS DITCH

0.10 MILES E OF CR 650 W, Adams, IN

Built 1985 Load: 36.3 t ADT: 122

CR 1200 SOUTH

Fair

Over: LIMBERLOST CREEK

0.20 MILES W OF US 27, Adams, IN

Built 1975 Load: 36.3 t ADT: 137

GLADESFORD DR

Fair

Over: NATURAL DRAIN

00.40 E IRON BRIDGE RD, Allen, IN

Built 1976 Load: 36.3 t ADT: 10

CR 450N

Fair

Over: DEER CREEK

00.75 W OF CR 500 W, Boone, IN

Built 1990 Load: 36.3 t ADT: 120

CR 500E

Fair

Over: RIDENOUR DITCH

00.18 S SR 18, Carroll, IN

Built 1973 Load: 36.3 t ADT: 64

CR 100W

Fair

Over: FORK PENTHER CREEK

00.00 INT OF CR 900 S, Decatur, IN

Built 1994 Load: 36.3 t ADT: 110

CR 26

Fair

Over: YELLOW CREEK

00.10 W OF CR 113, Elkhart, IN

Built 1958 Load: 36.3 t ADT: 5,383

CR 11

Fair

Over: HOKE DITCH

00.20 S OF CR 28, Elkhart, IN

Built 1969 Load: 36.3 t ADT: 712

CR 100S

Fair

Over: TAYLOR CREEK

00.95 W SR 13, Grant, IN

Built 2003 Load: 36.3 t ADT: 110

CR 800S

Fair

Over: GRASSY FORK CREEK

02.42 W SR 37, Grant, IN

Built 2000 Load: 36.3 t ADT: 130

131ST ST EAST

Fair

Over: SAND CREEK

00.10 E OF PROMISE RD, Hamilton, IN

Built 1987 Load: 36.3 t ADT: 4,340

CR 900N

Fair

Over: HONEY CREEK

00.10 E OF CR 600 W, Henry, IN

Built 1974 Load: 36.3 t ADT: 125

CR 600 E

Fair

Over: KOKOMO WATERWORKS RESERV

0.3 MI N CR 50 N, Howard, IN

Built 1975 Load: 36.3 t ADT: 1,203

CR 1190N

Fair

Over: Little Salt Creek

00.05 E of SR 135, Jackson, IN

Built 1994 Load: 36.3 t ADT: 60

FRY ROAD

Fair

Over: PLEASANT RUN CREEK

0.70 W OF US 31, Johnson, IN

Built 1996 Load: 36.3 t ADT: 14,291

BUCKMOOR PARKWAY

Fair

Over: TURKEY PEN CREEK

0.10 W OF SR 135, Johnson, IN

Built 1987 Load: 36.3 t ADT: 426

CR 825W

Fair

Over: INDIAN CAMP CREEK

00.10 N SR 32, Madison, IN

Built 1985 Load: 36.3 t ADT: 281

SHADELAND AVENUE

Fair

Over: CONRAIL RR

00.25 N OF MASSACHUSETTS, Marion, IN

Built 1936 Load: 36.3 t ADT: 25,725

NEW YORK ST

Fair

Over: WHITE RIVER

.9 MILE WEST OF MLK JR ST, Marion, IN

Built 1972 Load: 36.3 t ADT: 9,570

CONSERVATORY DRIVE

Fair

Over: PLEASANT RUN

00.05 SE OF PLSNT RUN PKW, Marion, IN

Built 1907 Load: 36.3 t ADT: 1,275

EMERSON AVENUE

Fair

Over: LICK CREEK

00.15 S OF RAYMOND STREET, Marion, IN

Built 1970 Load: 36.3 t ADT: 18,978

Showing 7,101-7,150 of 19,495 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
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.

What to do with this

Use Indiana's inventory picture to drill to a county or a specific span.

  • Browse counties in Indiana and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Indiana Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.