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 194

Good

Over: BR. SPRING CREEK

4.5 MI. NE CAMBRIDGE, Henry, IL

Built 1998 Load: 32.4 t ADT: 50

TR257

Good

Over: BR OF SPRING CREEK

8 MI NE OF CAMBRIDGE, Henry, IL

Built 2000 Load: 32.4 t ADT: 25

TR 213

Good

Over: WEST MINERAL CREEK

4 MI EAST OF ORION, Henry, IL

Built 1999 Load: 32.4 t ADT: 50

TR 116

Good

Over: MINERAL CREEK

5.8M SW GENESEO, Henry, IL

Built 2000 Load: 32.4 t ADT: 50

TR 111

Good

Over: SPRING CREEK

4.5 MI. E. GENESEO, Henry, IL

Built 2000 Load: 32.4 t ADT: 75

TR 379

Good

Over: BR S EDWARDS RVR

1.5M W BISHOP HILL, Henry, IL

Built 2000 Load: 32.4 t ADT: 75

TR 257

Good

Over: BR OF SPRING CREEK

4 MI NE OF CAMBRIDGE, Henry, IL

Built 2001 Load: 32.4 t ADT: 25

TR 204

Good

Over: ROCK RIVER TRIB

6.5 MI N GENESEO, Henry, IL

Built 2002 Load: 32.4 t ADT: 25

TR0157B

Good

Over: W. MINERAL CR.

1800N/780E, Henry, IL

Built 2002 Load: 32.4 t ADT: 50

FAS 238(CH14)

Good

Over: SPRING CR.

6.5 MI. NE CAMBRIDGE, Henry, IL

Built 2007 Load: 32.4 t ADT: 200

TR 456 A(2770E)

Good

Over: GREEN RIVER

2.5 MI SE HOOPPOLE, Henry, IL

Built 2004 Load: 32.4 t ADT: 25

TR 173

Good

Over: BR OF MINERAL CR

4 MI NE OF OSCO, Henry, IL

Built 2003 Load: 32.4 t ADT: 75

TR 69

Good

Over: BIG SLOUGH DITCH

5.5 MI NE GENESEO, Henry, IL

Built 2004 Load: 32.4 t ADT: 75

TR 391

Good

Over: BR. OF S. EDWARDS

1 MI S OF BISHOP HIL, Henry, IL

Built 2003 Load: 32.4 t ADT: 50

TR 54

Good

Over: UNNAMED CREEK

4.0 MI SE ALPHA, Henry, IL

Built 2005 Load: 32.4 t ADT: 100

TR 384

Good

Over: GREEN RIVER

3.5 MI SW HOOPPOLE, Henry, IL

Built 2005 Load: 32.4 t ADT: 50

TR 116

Good

Over: MINERAL CREEK

5.5 MI SW GENESEO, Henry, IL

Built 2005 Load: 32.4 t ADT: 50

TR 257

Good

Over: SPRING CREEK

2.5 MI NE CAMBRIDGE, Henry, IL

Built 2006 Load: 32.4 t ADT: 25

TR 205

Good

Over: BR OF OAT CREEK

6.0 MI SW ATKINSON, Henry, IL

Built 2007 Load: 32.4 t ADT: 75

TR6A

Good

Over: UNNAMED STREAM

3MI NW OF ORION, Henry, IL

Built 2007 Load: 32.4 t ADT: 50

1600N

Good

Over: MOSQUITO CREEK

.36MI W OF 350E, Henry, IL

Built 2007 Load: 32.4 t ADT: 50

TR 407

Good

Over: Spoon Creek

1 MI SW OF GALVA, Henry, IL

Built 2012 Load: 32.4 t ADT: 100

TR 70

Good

Over: MUD CREEK

.1 MI SE COLONA, Henry, IL

Built 2012 Load: 32.4 t ADT: 75

TR 228

Good

Over: BIG SLOUGH DITCH

2.6 MI NE OF GENESEO, Henry, IL

Built 2015 Load: 32.4 t ADT: 50

TR 379

Good

Over: DUGOUT CREEK

2 MI NE WOODHULL, Henry, IL

Built 2013 Load: 32.4 t ADT: 75

TR 68

Good

Over: CAMP CREEK

2.1 MI NW ANDOVER, Henry, IL

Built 2014 Load: 32.4 t ADT: 75

TR 114

Good

Over: CAMP CREEK

1.5 MI NE ANDOVER, Henry, IL

Built 2014 Load: 32.4 t ADT: 25

TR 251

Good

Over: TRIB OF CAMP CREEK

2.8 MI NW OF ANDOVER, Henry, IL

Built 2015 Load: 32.4 t ADT: 75

TR 8

Good

Over: BR PARKER RUN CRK

1.5 MI NE NEW WINDSR, Henry, IL

Built 2016 Load: 32.4 t ADT: 50

TR-276

Good

Over: BR OF OAT CREEK

8 MI NE CAMBRIDGE, Henry, IL

Built 2017 Load: 32.4 t ADT: 50

TR 81-B

Good

Over: GREEN RIVER LATERAL

2300 N 1130 E, Henry, IL

Built 1991 Load: 32.4 t ADT: 375

C.H. 5 FAS 232

Good

Over: MUD CR.

41/2 MI. S. ATKINSON, Henry, IL

Built 2005 Load: 32.4 t ADT: 1,500

FAS 1191

Good

Over: STREAM

0.5MI E COAL VALLEY, Henry, IL

Built 1956 Load: 32.4 t ADT: 1,200

FAS 232

Good

Over: STREAM

6.0MI NW OF KEWANEE, Henry, IL

Built 2009 Load: 32.4 t ADT: 1,500

TR 225

Good

Over: CREEK

1.7 MI W OF ORION, Henry, IL

Built 2009 Load: 32.4 t ADT: 100

SO STATE STREET

Good

Over: GENESEO CREEK

SO CENTER OF GENESEO, Henry, IL

Built 1982 Load: 32.4 t ADT: 3,050

SOUTH STATE STREET

Good

Over: GENESEO CREEK

SO CENTER OF GENESEO, Henry, IL

Built 1985 Load: 32.4 t ADT: 2,700

LATHROP ST/PATRIOT

Good

Over: GRADDETT DITCH

E EDGE OF ANNAWAN, Henry, IL

Built 2009 Load: 32.4 t ADT: 575

TR 1

Good

Over: STREAM

NE-1-T13NR1E, Henry, IL

Built 1995 Load: 32.4 t ADT: 10

FAS 337

Good

Over: BR OF SPRING CREEK

.41 MILES E FAI 57, Iroquois, IL

Built 1994 Load: 32.4 t ADT: 150

US 45 FAS 317

Good

Over: PRAIRIE CREEK

3.34 MI N OF US 24, Iroquois, IL

Built 2008 Load: 32.4 t ADT: 1,350

US 45 FAS 338

Good

Over: SPRING CREEK (S)

14.88 MI S OF IL 54, Iroquois, IL

Built 2008 Load: 32.4 t ADT: 3,300

IL 116 FAP 681

Good

Over: LANGAN CREEK

6.5 MI W OF I-57, Iroquois, IL

Built 2009 Load: 32.4 t ADT: 850

CH 44 (FAS 1336)

Good

Over: TRIB LITTLE MUD CR

5.5MI E US45 ON CH44, Iroquois, IL

Built 2004 Load: 32.4 t ADT: 325

FAS 1336 CH 44

Good

Over: TRIB LITTLE MUD CR

4.85MI E US45 ONCH44, Iroquois, IL

Built 2007 Load: 32.4 t ADT: 325

FAS 334(CH 9)

Good

Over: LOUIS CREEK TRIB

3 1/4 MILE W BUCKLEY, Iroquois, IL

Built 2013 Load: 32.4 t ADT: 475

FAS1335 CH42

Good

Over: TRIB LITTLE MUD CR-

2.2MI N JCT 44/42, Iroquois, IL

Built 2016 Load: 32.4 t ADT: 150

TR 313

Good

Over: UNNAMED DRDITCH

4.25 MI E BUCKLEY, Iroquois, IL

Built 1981 Load: 32.4 t ADT: 25

TR 327

Good

Over: LEWIS CREEK

.25 MI W BUCKLEY, Iroquois, IL

Built 1989 Load: 32.4 t ADT: 100

TR-50

Good

Over: Spring Creek

1.5MI E.1.5MI N BUC, Iroquois, IL

Built 1994 Load: 32.4 t ADT: 50

Showing 17,651-17,700 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.