State profile · Near median Poor share

Illinois 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 Illinois.

26,928
Public bridges
45.6%
Good condition
9.3%
Poor condition

Illinois holds 26,928 public highway bridges (#2 of 52 by inventory) with a 9.35% Poor share (#12 of 52 by Poor share).

That is 9.3% 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 41 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

26,928

Public highway bridges in Illinois

Good Condition

45.6%

12,289 bridges rated 7-9

-4.4pp vs 50% benchmark

Poor Condition

9.3%

2,517 bridges whose lowest applicable component is rated 0-4

1.8pp vs national avg 7.5%

Illinois vs national bridge condition

Illinois - Good condition share 45.6%
National avg

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

Illinois - Poor-condition share 31.2%
National avg

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

Illinois 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: Illinois has 26,928 bridges and a 9.3% Poor-condition share in the 2024 NBI, rank #41 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 (%) IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%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%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%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: Illinois has 26,928 bridges and a 9.3% Poor-condition share in the 2024 NBI, rank #41 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.

Illinois 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

26,928 2nd of 54 higher than 52 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 Illinois

The highlighted point is Illinois: 26,928 bridges and 9.35% in Poor condition, rank #41 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Illinois on that same Poor-share ordering:

  • Massachusetts: 5,295 bridges · 8.88% Poor
  • Missouri: 24,618 bridges · 8.95% Poor
  • Illinois: 26,928 bridges · 9.35% Poor
  • New York: 17,642 bridges · 9.43% Poor
  • North Dakota: 4,255 bridges · 10.98% Poor

The full national sortable table lives on the rankings page.

Material families in Illinois

Exclusive FHWA material families across all 26,928 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Illinois’s inventory

State agency holds 31.3% of the 26,928 public highway bridges filed under Illinois in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Illinois’s bridges were built

Pre-1950 construction accounts for 11.2% of the 26,928 bridges with a recorded original year in Illinois. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Illinois45.6%45%9.3%GoodFairPoor
Bridge inventory deck-condition mix - Illinois (FHWA NBI)

Counties (102)

Adams 319 Alexander 93 Bond 162 Boone 109 Brown 71 Bureau 375 Calhoun 81 Carroll 179 Cass 77 Champaign 727 Christian 321 Clark 230 Clay 166 Clinton 190 Coles 304 Cook 1721 Crawford 197 Cumberland 169 De Witt 192 DeKalb 261 Douglas 232 DuPage 344 Edgar 278 Edwards 79 Effingham 253 Fayette 357 Ford 302 Franklin 310 Fulton 210 Gallatin 82 Greene 162 Grundy 269 Hamilton 165 Hancock 292 Hardin 61 Henderson 142 Henry 328 Iroquois 570 Jackson 228 Jasper 181 Jefferson 260 Jersey 113 Jo Daviess 193 Johnson 118 Kane 336 Kankakee 344 Kendall 132 Knox 304 LaSalle 528 Lake 251 Lawrence 185 Lee 371 Livingston 579 Logan 292 Macon 346 Macoupin 242 Madison 523 Marion 296 Marshall 155 Mason 86 Massac 132 McDonough 209 McHenry 227 McLean 624 Menard 89 Mercer 163 Monroe 132 Montgomery 261 Morgan 234 Moultrie 172 Ogle 377 Peoria 352 Perry 136 Piatt 246 Pike 330 Pope 88 Pulaski 108 Putnam 50 Randolph 149 Richland 151 Rock Island 272 Saline 185 Sangamon 466 Schuyler 114 Scott 99 Shelby 335 St. Clair 486 Stark 93 Stephenson 342 Tazewell 358 Union 192 Vermilion 494 Wabash 89 Warren 199 Washington 233 Wayne 266 White 214 Whiteside 278 Will 649 Williamson 201 Winnebago 467 Woodford 223

Illinois 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 Illinois on the same metric.

MA

Massachusetts

8.88% top marginal rate
Structure
Progressive
Burden @ $100K
$5,295

MO

Missouri

8.95% top marginal rate
Structure
Progressive
Burden @ $100K
$24,618
Selected

IL

Illinois

9.35% top marginal rate
Structure
Progressive
Burden @ $100K
$26,928

NY

New York

9.43% top marginal rate
Structure
Progressive
Burden @ $100K
$17,642

ND

North Dakota

10.98% top marginal rate
Structure
Progressive
Burden @ $100K
$4,255

Bridges Needing Most Attention in Illinois

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

TR 416

Poor

Over: MCKEE CRK

4.7 MI W KELLERVILLE, Adams, IL

Built 1905 Load: 0.0 t ADT: 10

CH 11

Poor

Over: SOUTH FORKBEAR CREEK

3.96 MI N CAMP POINT, Adams, IL

Built 1975 Load: 0.0 t ADT: 725

FAS 945

Poor

Over: CLEAR CREEK DITCH

2.5 MI E OF MCCLURE, Alexander, IL

Built 1959 Load: 0.0 t ADT: 1,100

CH 4

Poor

Over: SPRING BRANCH

4.5M N KEYSPORT, Bond, IL

Built 1973 Load: 0.0 t ADT: 50

TR-164

Poor

Over: Little Beaver Creek

2 MI S DUDLEYVILLE, Bond, IL

Built 1965 Load: 0.0 t ADT: 50

TR 85

Poor

Over: MASTERS CREEK

3 MI SE OF OHIO, Bureau, IL

Built 1965 Load: 0.0 t ADT: 25

All Bridges in Illinois

TR 110

Good

Over: SESSER LAKE

1400N-650E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 350

TR 248A

Good

Over: GANTLING BRANCH

600N-1550E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 50

TR 95

Good

Over: WEBBS HILL BRANCH

1325N-1760E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 25

TR 278

Good

Over: TRIB TILLEY CREEK

250N-1750E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 125

TR 165

Good

Over: BRANCH OF AKIN CREEK

1050N-2350E, Franklin, IL

Built 1990 Load: 32.4 t ADT: 75

TR 149B

Good

Over: BN RR

1050N VALIER, Franklin, IL

Built 1991 Load: 32.4 t ADT: 275

FAU 9459

Good

Over: TRIB MIDDLE FORK

1000N-1350E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 450

TR 92

Good

Over: TRIB BIG MUDDY

550N 600E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 50

FAU 9459

Good

Over: TRIB MIDDLE FORK

975N 1350E, Franklin, IL

Built 1991 Load: 32.4 t ADT: 450

TR 260

Good

Over: BRANCH POND CREEK

000N 2000E, Franklin, IL

Built 1992 Load: 32.4 t ADT: 125

TR 93

Good

Over: JORDAN CREEK

1575 E 1375 N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 10

TR 177

Good

Over: ANDY CREEK

675E/950N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 125

TR 34

Good

Over: INDIAN CREEK

375E/1600N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 100

TR 137

Good

Over: BRANCH LAKE MOSES

1550E/1150N, Franklin, IL

Built 1992 Load: 32.4 t ADT: 150

FAS 1972

Good

Over: TRIB SANDUSKY CREEK

2 MI E IL 148, Franklin, IL

Built 1992 Load: 32.4 t ADT: 550

TR 278

Good

Over: TILLEY CREEK

1750E-350N, Franklin, IL

Built 1993 Load: 32.4 t ADT: 10

TR 388

Good

Over: ICG RR

560N 2270E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 50

CH 15

Good

Over: LITTLE INDIAN CREEK

1300N 325E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 250

TR 335

Good

Over: TRIB TO LITTLE MUDDY

300N 025E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 50

TR 21

Good

Over: TRIB SUGAR CAMP CR

1700N 2100E, Franklin, IL

Built 1993 Load: 32.4 t ADT: 50

TR 388-EASTERN TWP

Good

Over: EWING CREEK

2300E725N, Franklin, IL

Built 1993 Load: 32.4 t ADT: 100

TR 204

Good

Over: TRIB TO POND CREEK

1225E025N, Franklin, IL

Built 1994 Load: 32.4 t ADT: 300

TR 11

Good

Over: TRIB REND LAKE

1700N-775E, Franklin, IL

Built 1994 Load: 32.4 t ADT: 25

TR 157

Good

Over: JORDAN CREEK

1100N 1675E, Franklin, IL

Built 1994 Load: 32.4 t ADT: 25

TR 7

Good

Over: TRIB TO GUN CREEK

1625E 1750N, Franklin, IL

Built 1994 Load: 32.4 t ADT: 25

TR 84A

Good

Over: TRIB TO ANDY CREEK

950N 575E, Franklin, IL

Built 1994 Load: 32.4 t ADT: 650

CH 12

Good

Over: ICRR

2125E1475N, Franklin, IL

Built 1995 Load: 32.4 t ADT: 500

TR 22

Good

Over: TRIB TO PRAIRIE CR

300E375N, Franklin, IL

Built 1995 Load: 32.4 t ADT: 100

TR 403

Good

Over: POND CREEK

100N 1100E, Franklin, IL

Built 1995 Load: 32.4 t ADT: 1,000

TR 39

Good

Over: LITTLE INDIAN CREEK

FOREST ROAD, Franklin, IL

Built 1995 Load: 32.4 t ADT: 10

TR 250

Good

Over: DRUMMOND BRANCH

2 MI NE OF BENTON, Franklin, IL

Built 1995 Load: 32.4 t ADT: 325

TR 309

Good

Over: TRIB EWING CREEK

FOUR MILE LANE, Franklin, IL

Built 1995 Load: 32.4 t ADT: 125

TR 309

Good

Over: TRIB EWING CREEK

1.5 MI SO OF LOGAN, Franklin, IL

Built 1995 Load: 32.4 t ADT: 125

TR 205-SATCH RD

Good

Over: ANDY CREEK

875N-675E, Franklin, IL

Built 1996 Load: 32.4 t ADT: 50

FAS 874-LOGAN ROAD

Good

Over: EWING CREEK

325N-1650E, Franklin, IL

Built 1996 Load: 32.4 t ADT: 550

TR 288-BASELINE RD

Good

Over: EWING CREEK

2 MI SE OF LOGAN, Franklin, IL

Built 1997 Load: 32.4 t ADT: 250

TR1-N COUNTY LINE

Good

Over: WHITE OAK CREEK

1800N-0328E, Franklin, IL

Built 1996 Load: 32.4 t ADT: 25

TR263-THREEBRANCH

Good

Over: TRIB TO BIG MUDDY RV

0.75 MI SW CPHER, Franklin, IL

Built 1996 Load: 32.4 t ADT: 25

TR 244-BEAN ROAD

Good

Over: HAMILTON BRANCH

1 MI W OF EWING, Franklin, IL

Built 1996 Load: 32.4 t ADT: 150

TR 2 - JACO ROAD

Good

Over: TRIB TO LITTLE MUDDY

250N000E, Jackson, IL

Built 1996 Load: 32.4 t ADT: 25

TR 364-SHEEP FARM

Good

Over: ILLINOIS CENTRAL RR

5 MI E OF EWING, Franklin, IL

Built 1997 Load: 32.4 t ADT: 25

BAVES RD-TR 139

Good

Over: TRIB-MID FK BIGMUDDY

1200N 1870E, Franklin, IL

Built 1997 Load: 32.4 t ADT: 25

TR70-APPLEORCHARD

Good

Over: TRIB TO ANDY CREEK

S OF COELLO, Franklin, IL

Built 1997 Load: 32.4 t ADT: 200

TR 110-SESSER LK R

Good

Over: TRIB TO REND LAKE

955N 500-SE SESSER, Franklin, IL

Built 1997 Load: 32.4 t ADT: 275

TR 255

Good

Over: TRIB TO BESSIE CREEK

725N 1770E, Franklin, IL

Built 1997 Load: 32.4 t ADT: 200

TR 304

Good

Over: GRANNY CREEK

1520N 1900E, Franklin, IL

Built 1997 Load: 32.4 t ADT: 75

TR 244-BEAN ROAD

Good

Over: TRIB TO HAMILTON BR

1.5 MI W OF EWING, Franklin, IL

Built 1999 Load: 32.4 t ADT: 150

TR 38-WEST CENTER

Good

Over: TRIB TO KING CREEK

NE OF COELLA, Franklin, IL

Built 1999 Load: 32.4 t ADT: 75

TR 327-MOORE ROAD

Good

Over: TRIB TO EWING CREEK

DEERING, Franklin, IL

Built 1998 Load: 32.4 t ADT: 50

TR 154B-JACKANICZ

Good

Over: TRIB TO GREEN RIVER

S OF ORIENT, Franklin, IL

Built 1999 Load: 32.4 t ADT: 100

Showing 15,201-15,250 of 26,928 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 Illinois's inventory picture to drill to a county or a specific span.

  • Browse counties in Illinois 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. Illinois 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.