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

SOUTH FIRST STREET

Good

Over: BR S BR KISHWAUKEE R

1400N 775E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 100

MC GIRR ROAD

Good

Over: LITTLE ROCK CREEK

1300N 1120E, DeKalb, IL

Built 1984 Load: 32.4 t ADT: 100

CREGO ROAD (TR 154

Good

Over: LITTLE ROCK CREEK

1450N 1100E, DeKalb, IL

Built 1998 Load: 32.4 t ADT: 50

Keslinger Road.

Good

Over: S. Br. Kishwaukee Ri

1700 N. 725 E., DeKalb, IL

Built 2015 Load: 32.4 t ADT: 50

OWENS ROAD

Good

Over: BATTLE CREEK

1390N 1535E, DeKalb, IL

Built 1979 Load: 32.4 t ADT: 50

HINCKLEY ROAD

Good

Over: BR. OF BATTLE CREEK

1595N 1600E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 400

HARTER RD(TR165)

Good

Over: BATTLE CREEK

1600N 1465E, DeKalb, IL

Built 1994 Load: 32.4 t ADT: 25

MCGIRR RD

Good

Over: BR. BIG ROCK CREEK

13300N , 1795E, DeKalb, IL

Built 1996 Load: 32.4 t ADT: 450

HINCKLEY ROAD

Good

Over: BATTLE CREEK

1320N 1600E, DeKalb, IL

Built 2002 Load: 32.4 t ADT: 850

CEMETARY ROAD

Good

Over: S BR KISHWAUKEE RV

1000N 265E, DeKalb, IL

Built 1983 Load: 32.4 t ADT: 25

GOBLE ROAD

Good

Over: BIG INDIAN CREEK

650N 150E, DeKalb, IL

Built 1986 Load: 32.4 t ADT: 25

HOWISON ROAD

Good

Over: SOMONAUK CREEK

885N 1200E, DeKalb, IL

Built 1981 Load: 32.4 t ADT: 275

CREGO ROAD

Good

Over: BR. SOMONAUK CREEK

985N 1100E, DeKalb, IL

Built 1985 Load: 32.4 t ADT: 50

PRESERVE ROAD

Good

Over: BR. OF SOMONAUK CRK.

900N 1110E, DeKalb, IL

Built 2002 Load: 32.4 t ADT: 50

PHILLIPS ROAD

Good

Over: BIG ROCK CREEK

1070N 1615E, DeKalb, IL

Built 1981 Load: 32.4 t ADT: 400

DUFFY ROAD

Good

Over: LITTLE ROCK CREEK

1000N 1440E, DeKalb, IL

Built 1984 Load: 32.4 t ADT: 225

BASTIAN ROAD

Good

Over: LITTLE ROCK CREEK

800N 1735E, DeKalb, IL

Built 1983 Load: 32.4 t ADT: 75

E. SANDWICH ROAD

Good

Over: LITTLE ROCK CREEK

740N 1750E, DeKalb, IL

Built 1991 Load: 32.4 t ADT: 1,800

SVENDSEN ROAD

Good

Over: INDIAN CREEK

050N 360E, DeKalb, IL

Built 1982 Load: 32.4 t ADT: 50

GOBLE ROAD

Good

Over: PAW PAW RUN CREEK

245N 100E, DeKalb, IL

Built 1983 Load: 32.4 t ADT: 25

SLEEPY HOLLOW ROAD

Good

Over: BR OF INDIAN CREEK

520N 200E, DeKalb, IL

Built 1984 Load: 32.4 t ADT: 25

CLAPSADDLE ROAD

Good

Over: BR OF INDIAN CREEK

595N 425E, DeKalb, IL

Built 1986 Load: 32.4 t ADT: 50

SANDERSON ROAD

Good

Over: LITTLE INDIAN CR

100N 505E, DeKalb, IL

Built 1987 Load: 32.4 t ADT: 25

SYENDSEN ROAD

Good

Over: PAW PAW RUN CREEK

000N 235E, DeKalb, IL

Built 1986 Load: 32.4 t ADT: 100

HARPER ROAD

Good

Over: BR OF INDIAN CREEK

6 MI S OF SHABBONA, DeKalb, IL

Built 2004 Load: 32.4 t ADT: 25

S PAW PAW RD

Good

Over: BR PAW PAW RN CRK

250N 140E, DeKalb, IL

Built 2015 Load: 32.4 t ADT: 175

S PAW PAW RD

Good

Over: E BR PAW PAW RN CRK

250N 190E, DeKalb, IL

Built 2015 Load: 32.4 t ADT: 175

BURMA ROAD

Good

Over: LITTLE INDIAN CR

350N 790E, DeKalb, IL

Built 1987 Load: 32.4 t ADT: 25

BURMA ROAD

Good

Over: LITTLE INDIAN CREEK

450N 850E, DeKalb, IL

Built 1983 Load: 32.4 t ADT: 25

TAYLOR STREET

Good

Over: S.BR KISHWAUKEE RIVR

0.4 MI E ANNIE GLIDD, DeKalb, IL

Built 2002 Load: 32.4 t ADT: 5,650

FAU 5348 ANNIE GLI

Good

Over: UNNAMED TRIBUTARY

0.3 MI S IL 38, DeKalb, IL

Built 2007 Load: 32.4 t ADT: 12,200

SYCAMORE ST

Good

Over: LITTLE ROCK CREEK

0.1 MI. S. OF US 30, DeKalb, IL

Built 1993 Load: 32.4 t ADT: 250

FAIRVIEW DRIVE

Good

Over: S BR KISHWAUKEE RV

.1 M W 1ST ST DEKALB, DeKalb, IL

Built 2008 Load: 32.4 t ADT: 2,475

BETHANY RD

Good

Over: S BR KISHWAUKEE RIV.

2310N 1090E, DeKalb, IL

Built 2012 Load: 32.4 t ADT: 10,900

FAP 749 (IL 133)

Good

Over: STREAM

2.5 MI W OF ARCOLA, Douglas, IL

Built 1996 Load: 32.4 t ADT: 3,950

CH 12(FAP 816)

Good

Over: W FORK KASKASKIA RIV

1 MI N OF ARTHUR, Douglas, IL

Built 2009 Load: 32.4 t ADT: 3,100

TR 23

Good

Over: KASKASKIA RIVER

2.65 MI NW FICKLIN, Douglas, IL

Built 1978 Load: 32.4 t ADT: 50

TR 30

Good

Over: DRY FORK

1.3 MILE SE GARRETT, Douglas, IL

Built 1981 Load: 32.4 t ADT: 50

TR 81

Good

Over: BEAR CREEK

3 MI SE OF ATWOOD, Douglas, IL

Built 1980 Load: 32.4 t ADT: 50

TR 23

Good

Over: DRY FORK

2.7 MI N OF GARRETT, Douglas, IL

Built 1983 Load: 32.4 t ADT: 50

TR 53

Good

Over: DRY FORK

0.8 MI NE OF GARRETT, Douglas, IL

Built 1986 Load: 32.4 t ADT: 50

TR 81

Good

Over: KASKASKIA RIVER

1.5 MI N OF BOURBON, Douglas, IL

Built 1991 Load: 32.4 t ADT: 75

TR 11

Good

Over: DRY FORK

3.7 MI N OF GARRETT, Douglas, IL

Built 1994 Load: 32.4 t ADT: 50

TR 81

Good

Over: DRY FORK

2.2 MI NW OF BOURBON, Douglas, IL

Built 1997 Load: 32.4 t ADT: 50

TR 81

Good

Over: LAKE FORK

2.2 MI S OF ATWOOD, Douglas, IL

Built 1999 Load: 32.4 t ADT: 50

PRIVATE DRIVE

Good

Over: DRY FORK

3.8 MILE N GARRETT, Douglas, IL

Built 2001 Load: 32.4 t ADT: 1,550

TR 11

Good

Over: KASKASKIA RIVER

3.6 MI N OF FICKLIN, Douglas, IL

Built 1999 Load: 32.4 t ADT: 50

TR 3

Good

Over: DRY FORK

4.65 MI N OF GARRETT, Douglas, IL

Built 2005 Load: 32.4 t ADT: 50

TR-56

Good

Over: Kaskaskia River

1050N - 550E, Douglas, IL

Built 2011 Load: 32.4 t ADT: 75

CH 6

Good

Over: Kaskaskia River

4.65 mi N of Garrett, Douglas, IL

Built 2021 Load: 32.4 t ADT: 25

Showing 16,401-16,450 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.