State profile · Near median Poor share

Illinois bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition

Data updated May 2026

Total Bridges

27,743

Public highway bridges in Illinois

Good Condition

41.2%

11,426 bridges rated 7-9

-8.8pp vs 50% benchmark

Poor Condition

7.9%

2,186 bridges whose lowest applicable component is rated 0-4

0.9pp vs national avg 7.0%

Illinois vs national bridge condition

Illinois - Good condition share 41.2%
National avg

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

Illinois - Poor-condition share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Illinois48.2%42.6%9.2%GoodFairPoor
Bridge inventory deck-condition mix - Illinois (FHWA NBI)

Counties (102)

Adams 325 Alexander 96 Bond 165 Boone 111 Brown 71 Bureau 382 Calhoun 81 Carroll 185 Cass 77 Champaign 743 Christian 323 Clark 232 Clay 171 Clinton 187 Coles 308 Cook 2185 Crawford 196 Cumberland 169 De Witt 197 DeKalb 264 Douglas 234 DuPage 380 Edgar 278 Edwards 79 Effingham 260 Fayette 356 Ford 300 Franklin 323 Fulton 210 Gallatin 82 Greene 166 Grundy 269 Hamilton 164 Hancock 291 Hardin 58 Henderson 144 Henry 331 Iroquois 565 Jackson 235 Jasper 180 Jefferson 270 Jersey 111 Jo Daviess 198 Johnson 120 Kane 354 Kankakee 352 Kendall 133 Knox 321 LaSalle 529 Lake 286 Lawrence 183 Lee 372 Livingston 578 Logan 296 Macon 368 Macoupin 248 Madison 543 Marion 301 Marshall 153 Mason 85 Massac 138 McDonough 210 McHenry 229 McLean 624 Menard 90 Mercer 162 Monroe 130 Montgomery 261 Morgan 241 Moultrie 171 Ogle 377 Peoria 365 Perry 139 Piatt 249 Pike 338 Pope 86 Pulaski 106 Putnam 50 Randolph 155 Richland 147 Rock Island 256 Saline 176 Sangamon 480 Schuyler 121 Scott 96 Shelby 330 St. Clair 502 Stark 89 Stephenson 332 Tazewell 361 Union 192 Vermilion 515 Wabash 88 Warren 202 Washington 232 Wayne 264 White 210 Whiteside 280 Will 674 Williamson 204 Winnebago 475 Woodford 222

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.

RI

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

NE

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

IL

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

MA

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

MO

Missouri

8.53% top marginal rate
Structure
Progressive
Burden @ $100K
$24,654

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.

FAS 1599

Poor

Over: DRAINAGE CANAL

2.2 MI E MEYER, Adams, IL

Built 1980 Load: 0.6 t ADT: 200

CH 15

Poor

Over: E FK MAZONRIVER

0.05 MI W CH 16, Grundy, IL

Built 1977 Load: 1.0 t ADT: 1,400

MOOSE RD - TR 240

Poor

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Poor

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Poor

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Poor

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

TR-4

Good

Over: Owl Creek

N MULBERRY GROVE, Fayette, IL

Built 2017 Load: 32.4 t ADT: 75

FAS-719

Good

Over: Crooked Creek

3 MI. E FARINA, Fayette, IL

Built 2017 Load: 32.4 t ADT: 575

TR-324

Good

Over: SANDY RUN

2 MI SW BROWNSTOWN, Fayette, IL

Built 1981 Load: 32.4 t ADT: 75

TR-541

Good

Over: TRIB DISMAL CREEK

3 MI E ST PETER, Fayette, IL

Built 1986 Load: 32.4 t ADT: 325

FAS-721

Good

Over: TRIB RAMSEY CREEK

0.2 MI W RAMSEY, Fayette, IL

Built 1990 Load: 32.4 t ADT: 725

FAS-719

Good

Over: CROOKED CREEK

2.75 MI E FARINA, Fayette, IL

Built 1993 Load: 32.4 t ADT: 575

MAIN STREET 7010A

Good

Over: BRICKYARD BRANCH

ST ELMO, Fayette, IL

Built 1988 Load: 32.4 t ADT: 200

FAU-8417 & 8427

Good

Over: Creek

VANDALIA, Fayette, IL

Built 2017 Load: 32.4 t ADT: 5,350

FAU-8430

Good

Over: Bear Creek

1/4 m. W US 51, Fayette, IL

Built 2018 Load: 32.4 t ADT: 425

IL 115 FAP 798

Good

Over: DRAINAGE DITCH

0.45 MI S OF US 24, Ford, IL

Built 2009 Load: 32.4 t ADT: 950

IL 115 FAP 798

Good

Over: DRAINAGE DITCH

3.97 MI N OF IL 54, Ford, IL

Built 2009 Load: 32.4 t ADT: 1,150

IL 115 FAS 798

Good

Over: DRAINAGE DITCH

2.97 MI N OF IL 54, Ford, IL

Built 2009 Load: 32.4 t ADT: 1,150

IL 54 FAP 71

Good

Over: STREAM

0.2 MI NE OF IL 9, Ford, IL

Built 1931 Load: 32.4 t

TR 32

Good

Over: TRIB TO BIG FOUR CRK

830N, 900E, Ford, IL

Built 1997 Load: 32.4 t ADT: 25

TR 72A PATTON

Good

Over: STREAM

1930E,500N, Ford, IL

Built 1972 Load: 32.4 t ADT: 350

TR 13 MONA

Good

Over: STREAM

1350E 3200N, Ford, IL

Built 1976 Load: 32.4 t ADT: 50

TR 48 MONA

Good

Over: STREAM

3160N 1300E, Ford, IL

Built 1976 Load: 32.4 t ADT: 50

TR 14 DRUMMER

Good

Over: DRUMMER CREEK

160N 400E, Ford, IL

Built 1978 Load: 32.4 t ADT: 25

TR 73A DIX

Good

Over: THE BIG FOUR

990E 900N, Ford, IL

Built 1978 Load: 32.4 t ADT: 50

TR 88 BUTTON

Good

Over: STREAM

2500E 30N, Ford, IL

Built 1978 Load: 32.4 t ADT: 25

TR 19 PELLA

Good

Over: N FORK VERMILLION R

1230E 2900N, Ford, IL

Built 1978 Load: 32.4 t ADT: 50

TR 79 DRUMMER

Good

Over: DICKERSON SLOUGH

570E 700N, Ford, IL

Built 1980 Load: 32.4 t ADT: 75

TR 39 BRENTON

Good

Over: N FORK VERMILION RIV

1730E 2200N, Ford, IL

Built 1980 Load: 32.4 t ADT: 25

TR61C/PEACH ORCHAR

Good

Over: THE BIG FOUR

950E 1300N, Ford, IL

Built 1979 Load: 32.4 t ADT: 50

TR 64A LYMAN

Good

Over: TRIB. TO LOUIS CREEK

1310 N 1700 E, Ford, IL

Built 1981 Load: 32.4 t ADT: 50

TR 103 BUTTON

Good

Over: SUGAR CREEK

2570E,300N, Ford, IL

Built 1983 Load: 32.4 t ADT: 50

TR 42C DIX

Good

Over: STREAM

860N,1200E, Ford, IL

Built 1979 Load: 32.4 t ADT: 50

TR 71C PEACH ORCHA

Good

Over: W. BRANCH OF VERM. R

940E,1000N, Ford, IL

Built 1981 Load: 32.4 t ADT: 25

TR 73 SULLIVANT

Good

Over: STREAM

460E,900N, Ford, IL

Built 1979 Load: 32.4 t ADT: 10

TR 11 MONA

Good

Over: STREAM

1790E,3400N, Ford, IL

Built 1981 Load: 32.4 t ADT: 75

TR 60A LYMAN

Good

Over: STREAM

1850N,1600E, Ford, IL

Built 1983 Load: 32.4 t ADT: 75

TR 60C PATTON

Good

Over: STREAM

1600E,190N, Ford, IL

Built 1980 Load: 32.4 t ADT: 75

TR 48A PELLA

Good

Over: N FK VERMILION RIVER

2860N,1300E, Ford, IL

Built 1981 Load: 32.4 t ADT: 50

TR 35A BRENTON

Good

Over: STREAM

2450N,1560E, Ford, IL

Built 1988 Load: 32.4 t ADT: 25

TR 105A PATTON

Good

Over: STREAM

1610E,200N, Ford, IL

Built 1982 Load: 32.4 t ADT: 100

TR 48 PELLA

Good

Over: KELLY CREEK

2990N,1300E, Ford, IL

Built 1983 Load: 32.4 t ADT: 50

TR 4 SULLIVANT

Good

Over: STREAM

1020N 00E, Ford, IL

Built 1980 Load: 32.4 t ADT: 125

TR 60C PATTON

Good

Over: STREAM

590N,1600E, Ford, IL

Built 1983 Load: 32.4 t ADT: 75

TR 81 DIX

Good

Over: STREAM/DITCH

960E,600N, Ford, IL

Built 1982 Load: 32.4 t ADT: 50

TR 7 MONA

Good

Over: STREAM

1410E,3600N, Ford, IL

Built 1982 Load: 32.4 t ADT: 25

TR 58 PELLA

Good

Over: STREAM

3070N 1500E, Ford, IL

Built 1984 Load: 32.4 t ADT: 25

TR 3A PATTON

Good

Over: STREAM

000N,2080E, Ford, IL

Built 1983 Load: 32.4 t ADT: 75

TR 64A WALL

Good

Over: STREAM

1010N,1700E, Ford, IL

Built 1989 Load: 32.4 t ADT: 50

TR 99A DIX

Good

Over: STREAM

770E 300N, Ford, IL

Built 1984 Load: 32.4 t ADT: 35

TR 12D DRUMMER

Good

Over: STREAM

310N 290E, Ford, IL

Built 1984 Load: 32.4 t ADT: 75

TR 27 PELLA

Good

Over: STREAM

121OE,2600N, Ford, IL

Built 1986 Load: 32.4 t ADT: 75

TR 29 PELLA TWP

Good

Over: N FK VERMILION RIVER

1530E,2600N, Ford, IL

Built 1985 Load: 32.4 t ADT: 25

TR 60B MONA TWP

Good

Over: STREAM

3110N,1600E, Ford, IL

Built 1985 Load: 32.4 t ADT: 25

TR 12C DRUMMER

Good

Over: STREAM

820N,300E, Ford, IL

Built 1986 Load: 32.4 t ADT: 25

TR 51 LYMAN

Good

Over: STREAM

1800N,1620E, Ford, IL

Built 1988 Load: 32.4 t ADT: 25

Showing 16,901-16,950 of 27,743 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.

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.