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 169A

Good

Over: ELLIOTT CREEK

6.5 S 1 E OHLMAN, Montgomery, IL

Built 1989 Load: 32.4 t ADT: 50

TR 275

Good

Over: HURRICANE CREEK

3MI NE FILLMORE, Montgomery, IL

Built 1988 Load: 32.4 t ADT: 25

TR 467

Good

Over: GROVE BRANCH

3.8 MI SW PANAMA, Montgomery, IL

Built 1989 Load: 32.4 t ADT: 75

TR 344

Good

Over: CREEK

2.5 MI SW FILLMORE, Montgomery, IL

Built 1995 Load: 32.4 t ADT: 25

TR-274

Good

Over: SHOAL CREEK

6.4MI NW COALTON, Montgomery, IL

Built 1993 Load: 32.4 t ADT: 50

TR-0116

Good

Over: WEST FK SHOAL CREEK

0.25 MI SW RAYMOND, Montgomery, IL

Built 2005 Load: 32.4 t ADT: 150

FAS 646

Good

Over: RAMSEY CREEK

7 MI E. NOKOMIS, Montgomery, IL

Built 1989 Load: 32.4 t ADT: 500

NOKOMIS-OCONEE ROA

Good

Over: STREAM

8 MI. E. NOKOMIS, Montgomery, IL

Built 1989 Load: 32.4 t ADT: 500

TR 4 (SHELBY CO) R

Good

Over: RAMSEY CREEK

8 MI E NOKOMIS, Montgomery, IL

Built 1991 Load: 32.4 t ADT: 125

TR 0440

Good

Over: ELLIOT CREEK

9 MI SE WITT, Montgomery, IL

Built 2003 Load: 32.4 t ADT: 50

TR 145

Good

Over: BLUE GRASS CREEK

3.2 MI SE RAYMOND, Montgomery, IL

Built 1995 Load: 32.4 t ADT: 75

TR 205

Good

Over: LITTLE CREEK

1 MI W IRVING, Montgomery, IL

Built 1992 Load: 32.4 t ADT: 100

TR 139A

Good

Over: FAWN CREEK

3MI NW WITT, Montgomery, IL

Built 1991 Load: 32.4 t ADT: 75

TR 166

Good

Over: BLUE GRASS CREEK

3MI SE OF RAYMOND, Montgomery, IL

Built 1992 Load: 32.4 t ADT: 25

TR 6

Good

Over: HORSE CREEK

2.6 MI SW WAGGONER, Montgomery, IL

Built 1994 Load: 32.4 t ADT: 50

TR 69

Good

Over: W FORK SHOAL CREEK

2.5MI W HARVEL, Montgomery, IL

Built 1992 Load: 32.4 t ADT: 25

FAS 727

Good

Over: MIDDLE FORK SHOAL CR

N EDGE HILLSBORO, Montgomery, IL

Built 1995 Load: 32.4 t ADT: 1,650

FAS 732

Good

Over: MACOUPIN CREEK

.5 MI E FARMERSVILLE, Montgomery, IL

Built 1995 Load: 32.4 t ADT: 950

FAS 732

Good

Over: MACOUPIN CREEK

2 MI E FARMERSVILLE, Montgomery, IL

Built 1995 Load: 32.4 t ADT: 750

TR-153

Good

Over: ELLIOT CR

4.5 M SE NOKOMIS, Montgomery, IL

Built 2005 Load: 32.4 t ADT: 25

TR 219

Good

Over: CRESS CREEK

1 M E BUTLER, Montgomery, IL

Built 2008 Load: 32.4 t ADT: 325

TR 36

Good

Over: Macoupin Creek

2 mi SW Farmersville, Montgomery, IL

Built 2012 Load: 32.4 t ADT: 75

COFFEEN FILLMORE R

Good

Over: TIGE BRANCH

0.7 MI E COFFEEN, Montgomery, IL

Built 1998 Load: 32.4 t ADT: 250

TR 230

Good

Over: E FK SHOAL CREEK

3.75 MI S WITT, Montgomery, IL

Built 2001 Load: 32.4 t ADT: 25

LAKE DRIVE ROAD

Good

Over: SPILLYWAY-HILLSBORO

LAKE HILLSBORO, Montgomery, IL

Built 1997 Load: 32.4 t ADT: 750

TR 101

Good

Over: TRIB W FK SHOAL CR

1.5 MI E RAYMOND, Montgomery, IL

Built 2000 Load: 32.4 t ADT: 75

TR 423

Good

Over: DRY FORK

2.8 MI SW WALSHVILLE, Montgomery, IL

Built 2000 Load: 32.4 t ADT: 75

RAYMOND NORTH RD

Good

Over: HORSE CREEK

7 MI N RAYMOND, Montgomery, IL

Built 2000 Load: 32.4 t ADT: 750

WITT WEST RD

Good

Over: FAWN CREEK

4.3 MI W OF WITT, Montgomery, IL

Built 2000 Load: 32.4 t ADT: 275

TR 85

Good

Over: MIDDLE FK SHOAL CR

3.0 M NW NOKOMIS, Montgomery, IL

Built 2003 Load: 32.4 t ADT: 50

TR-1

Good

Over: CREEK

6 MI NE FARMERSVILLE, Montgomery, IL

Built 2002 Load: 32.4 t ADT: 75

TR 119

Good

Over: BR W FK SHOAL CR

4.5 MI SW RAYMOND, Montgomery, IL

Built 2000 Load: 32.4 t ADT: 125

NOKOMIS OCONEE RD

Good

Over: E BRANCH ELLIOTT CK

4.2 MI E NOKOMIS, Montgomery, IL

Built 2002 Load: 32.4 t ADT: 500

FAS 721 CH 8

Good

Over: MCDAVID BRANCH

1 M SE SCHRAM CITY, Montgomery, IL

Built 2009 Load: 32.4 t ADT: 750

TR 321

Good

Over: MILLER CR

4 MI SW HILLSBRO, Montgomery, IL

Built 2001 Load: 32.4 t ADT: 50

TR 231

Good

Over: TRIB TO LITTLE CR

1.5 M SW IRVING, Montgomery, IL

Built 2001 Load: 32.4 t ADT: 50

TR 75B

Good

Over: SMALL STREAM

4.2 M NW NOKOMIS, Montgomery, IL

Built 2007 Load: 32.4 t ADT: 75

TR 81

Good

Over: W Fk Shoal Ck

.35 mi W TR 124, Montgomery, IL

Built 2013 Load: 32.4 t ADT: 50

TR 51A

Good

Over: HORSE CREEK

2 MI NE WAGGONER, Montgomery, IL

Built 2001 Load: 32.4 t ADT: 50

TR 269

Good

Over: STREAM

1.5 SW LITCHFIELD, Montgomery, IL

Built 2001 Load: 32.4 t ADT: 25

TR 275

Good

Over: BR HURRICANE CR

3 M NE FILLMORE, Montgomery, IL

Built 2009 Load: 32.4 t ADT: 50

FAS 721

Good

Over: E FORK SHOAL CR

4.5 M NW FILLMORE, Montgomery, IL

Built 2010 Load: 32.4 t ADT: 450

FAS 725

Good

Over: W Fork Shoal Creek

2 mi N FAS 728, Montgomery, IL

Built 2016 Load: 32.4 t ADT: 550

CH 14

Good

Over: Brush Creek

1 mi W of Butler, Montgomery, IL

Built 2016 Load: 32.4 t ADT: 300

FAS 2723 (CH 5)

Good

Over: Fawn Creek

4.5 Mi N Irving, Montgomery, IL

Built 2013 Load: 32.4 t ADT: 150

TR142

Good

Over: BRUSH CREEK

2.5 mi S FAP325/IL16, Montgomery, IL

Built 2014 Load: 32.4 t ADT: 225

TR-275

Good

Over: Dry Fork

0.60 mi E TR 366, Montgomery, IL

Built 2017 Load: 32.4 t ADT: 75

TR 108

Good

Over: LONG BRANCH

4.6 MI SE LITCHFIELD, Montgomery, IL

Built 1970 Load: 32.4 t ADT: 75

TR 0163

Good

Over: THREE MILE BRANCH

5 MI N LITCHFIELD, Montgomery, IL

Built 1976 Load: 32.4 t ADT: 25

TR 21

Good

Over: HORSE CREEK

4.5MI NE FARMSRVILLE, Montgomery, IL

Built 1978 Load: 32.4 t ADT: 50

Showing 19,751-19,800 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.