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 15

Good

Over: LONE GROVE BRANCH

2.5 MI N KINMUNDY, Marion, IL

Built 2001 Load: 32.4 t ADT: 25

TR 323

Good

Over: NICKELSON CREEK

3.5 MI N HELM, Marion, IL

Built 2003 Load: 32.4 t ADT: 10

TR 6

Good

Over: NORTH FORK CREEK

2 MI W PATOKA, Marion, IL

Built 2002 Load: 32.4 t ADT: 75

FAU 8557/BOONE ST

Good

Over: TOWN CREEK

SALEM, Marion, IL

Built 2003 Load: 32.4 t ADT: 2,700

TR 212

Good

Over: RACCOON CREEK

3.5 MI ENE WALNUT HL, Marion, IL

Built 2004 Load: 32.4 t ADT: 250

TR 98

Good

Over: NORTH FORK

1.5 MI NE PATOKA, Marion, IL

Built 2004 Load: 32.4 t ADT: 175

FAU 8557

Good

Over: CE & I RESERVOIR

NE PART OF SALEM, Marion, IL

Built 2004 Load: 32.4 t ADT: 150

CH 5

Good

Over: KASKASKIA RIVER

3 MI SE PATOKA, Marion, IL

Built 2005 Load: 32.4 t ADT: 175

TR 181

Good

Over: CROOKED CREEK

1 MI SW BRUBAKER, Marion, IL

Built 2005 Load: 32.4 t ADT: 50

TR 22

Good

Over: LOST CREEK

1.3 MI N SANDOVAL, Marion, IL

Built 2005 Load: 32.4 t ADT: 100

FAS 2789

Good

Over: BRANCH CROOKED CREEK

1.5 W BRUBAKER, Marion, IL

Built 2007 Load: 32.4 t ADT: 300

FAS 2789

Good

Over: TRIB TO SKILLET FORK

3.5 MI EAST OF OMEGA, Marion, IL

Built 2006 Load: 32.4 t ADT: 75

CH-20

Good

Over: CROOKED CREEK

2 MI NE SALEM, Marion, IL

Built 2008 Load: 32.4 t ADT: 500

CH-20

Good

Over: BEE BRANCH

3 MI S OMEGA, Marion, IL

Built 2009 Load: 32.4 t ADT: 275

TR 388

Good

Over: TRIB FULTON CREEK

2 MI W OF IUKA, Marion, IL

Built 2006 Load: 32.4 t ADT: 225

TR 395

Good

Over: TRIB TO RACCOON LAKE

3MI E CENTRALIA, Marion, IL

Built 2008 Load: 32.4 t ADT: 75

SEVEN HILLS TR 120

Good

Over: DEER CREEK

2.5 MI E OF PATOKA, Marion, IL

Built 2009 Load: 32.4 t ADT: 125

TR 268

Good

Over: EAST FORK KASKASKIA

4 MI W KINMUNDY, Marion, IL

Built 2009 Load: 32.4 t ADT: 50

TR 486

Good

Over: CROOKED CREEK

6 MI NE KINMUNDY, Marion, IL

Built 2010 Load: 32.4 t ADT: 50

TR 254

Good

Over: CROOKED CREEK

2 MI S SALEM, Marion, IL

Built 2010 Load: 32.4 t ADT: 725

TR 119

Good

Over: JIMS CREEK

2.75 MI W ALMA, IL, Marion, IL

Built 2011 Load: 32.4 t ADT: 25

TR 442 D

Good

Over: JAMISON CREEK

1 MI E OF IUKA, Marion, IL

Built 2011 Load: 32.4 t ADT: 75

TR 226A Jezek Rd

Good

Over: Wills Cr

3.5 mi N of Salem, Marion, IL

Built 2012 Load: 32.4 t ADT: 50

TR 304A

Good

Over: North Fork

3 Mi NW Kinmundy, Marion, IL

Built 2012 Load: 32.4 t ADT: 25

TR 297 River Rd

Good

Over: Johns Branch

2.5 M S of Iuka, Marion, IL

Built 2012 Load: 32.4 t ADT: 75

TR 530 Foster Ln

Good

Over: Conner Branch

4 M E of Iuka, Marion, IL

Built 2012 Load: 32.4 t ADT: 50

TR 360 (Gentry Roa

Good

Over: E Br Kaskaskia River

2 Mi N of Kinmundy, Marion, IL

Built 2014 Load: 32.4 t ADT: 25

TR 94 Farthing Roa

Good

Over: Turkey Creek

2 Mi S of Odin, Marion, IL

Built 2015 Load: 32.4 t ADT: 150

FAS-787

Good

Over: DEER CREEK

NE PATOKA, Marion, IL

Built 1976 Load: 32.4 t ADT: 350

FAS-2719

Good

Over: CREEK

2 MI SW KINMUNDY, Marion, IL

Built 1969 Load: 32.4 t ADT: 950

TR 171

Good

Over: TRIB SKILLET FORK

2 MI SSE FORBES SP, Marion, IL

Built 1983 Load: 32.4 t ADT: 25

CH-13

Good

Over: SULPHUR BRANCH

2.5 MI E WALNUT HILL, Marion, IL

Built 1990 Load: 32.4 t ADT: 200

TR 86

Good

Over: LOUSE CREEK

2 MI SE PATOKA, Marion, IL

Built 2004 Load: 32.4 t ADT: 50

TR 460

Good

Over: LOST FORK

4.5 MI E OF KINMUNDY, Marion, IL

Built 2007 Load: 32.4 t ADT: 75

FAU-8613

Good

Over: FULTON CREEK

WAMAC, Marion, IL

Built 1992 Load: 32.4 t ADT: 2,800

SOUTH PINE ST

Good

Over: FULTON BRANCH

CENTRALIA, Marion, IL

Built 2007 Load: 32.4 t ADT: 400

ILL 89

Good

Over: CREEK

5.6 M. S. OF ILL 17, Marshall, IL

Built 2002 Load: 32.4 t ADT: 2,200

FAS 372 CH 6

Good

Over: CROW CREEK

T13N-R10E-4PM SEC 18, Marshall, IL

Built 1989 Load: 32.4 t ADT: 350

CTY HWY 8 (CH-C61)

Good

Over: SENACHWIN CREEK

T13N-R9E-4PM SEC 31, Marshall, IL

Built 1985 Load: 32.4 t ADT: 150

CAMP GROVE RD(CH 8

Good

Over: CREEK

T13N R8E 4PM SEC 34, Marshall, IL

Built 2006 Load: 32.4 t ADT: 150

TR 77

Good

Over: SENACHWINE CREEK

3.25W,.5S OF SPARLND, Marshall, IL

Built 2003 Load: 32.4 t ADT: 50

CH 14

Good

Over: JUDD CREEK

4.3 MI W OF WENONA, Marshall, IL

Built 2001 Load: 32.4 t ADT: 250

CH 14

Good

Over: STREAM

1.3 MI W OF WENONA, Marshall, IL

Built 2000 Load: 32.4 t ADT: 375

CH 14

Good

Over: UNNAMED STREAM

1.2N & 2.1E OF VARNA, Marshall, IL

Built 2001 Load: 32.4 t ADT: 200

CH 14 WENONA RD

Good

Over: UNNAMED STREAM

WEST EDGE OF WENONA, Marshall, IL

Built 2000 Load: 32.4 t ADT: 425

FAS365 CH16

Good

Over: STRAWNS RUN

0.31 MI SE IL 17, Marshall, IL

Built 2004 Load: 32.4 t ADT: 600

FAS365 CH16

Good

Over: STRAWN CREEK

T29N-R2W-3PM SEC 5, Marshall, IL

Built 2007 Load: 32.4 t ADT: 500

TR 16(TH-R 63)

Good

Over: BRANCH CROW CREEK

.52 M S OF BUREAU CO, Marshall, IL

Built 1993 Load: 32.4 t ADT: 25

TR10(TH-R61)

Good

Over: SENACHWINE CREEK

T13N-R8E-4PM SEC27, Marshall, IL

Built 1995 Load: 32.4 t ADT: 25

TR 4

Good

Over: CROW CREEK

2 MI N OF CH 16, Marshall, IL

Built 2000 Load: 32.4 t ADT: 25

Showing 19,201-19,250 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.