State profile · Near national median SD

Illinois bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.

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

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 rated 0-4

Structurally Deficient

7.9%

2,186 bridges flagged for repair priority

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 — Structurally deficient share 26.3%
National avg

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

Condition Distribution

Bridge inventory deck-condition mix — Illinois (FHWA NBI)

Illinois41.185163825109036%36.47046101719353%7.879465090293047%7.879465090293047%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.

44

Rhode Island

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

31

Nebraska

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

17

Illinois

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

25

Massachusetts

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

29

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 composite NBI rating. Each is inspected at least every 24 months.

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

Structurally Deficient

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Structurally Deficient

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Structurally Deficient

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Structurally Deficient

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

TR 145

Good

Over: WALNUT CR

1.7 MI W I 117, Woodford, IL

Built 2006 Load: 32.4 t ADT: 150

TR 49A, 2000N

Good

Over: TRIB MOLE CREEK

1/2 MI E OF 3100E, Woodford, IL

Built 2007 Load: 32.4 t ADT: 75

TR 66

Good

Over: PARTRIDGE CREEK

1/4 MI N OF 1500N RD, Woodford, IL

Built 2009 Load: 32.4 t ADT: 350

TR 50(COAL BANK RD

Good

Over: PARTRIDGE CR

0.1 MI S OF 1650N, Woodford, IL

Built 2010 Load: 32.4 t ADT: 325

FAS 357 CH 2

Good

Over: S BR HALLENBACK CR

5.25 MI SE WASHBURN, Woodford, IL

Built 2012 Load: 32.4 t ADT: 375

TR 129 (1300N Rd)

Good

Over: Trib to Walnut Crk

3.5 SE Metamora, Woodford, IL

Built 2014 Load: 32.4 t ADT: 75

FAS 267 (CH 20)

Good

Over: Panther Creek

0.75 MI N CH 16, Woodford, IL

Built 2014 Load: 32.4 t ADT: 100

TR 163

Good

Over: PANTHER CREEK

1.5 MI N US RTE 24, Woodford, IL

Built 2016 Load: 32.4 t ADT: 125

TR 174

Good

Over: HALLENBACK CREEK

1.2 MI W IL RTE 116, Woodford, IL

Built 2016 Load: 32.4 t ADT: 75

TR 144

Good

Over: BRANCH TO RED RIVER

5 MI SE EUREKA, Woodford, IL

Built 1983 Load: 32.4 t ADT: 225

FAS 2360

Good

Over: TRIB OF BLUE CR.

1.8 MI E ILL 26, Woodford, IL

Built 1985 Load: 32.4 t ADT: 675

TR 66

Good

Over: RICHLAND CR.

1.7 M NW OF LOWPOINT, Woodford, IL

Built 1991 Load: 32.4 t ADT: 225

TR 101A

Good

Over: W. FORK PANTHER CREK

1500N 1490E, Woodford, IL

Built 1993 Load: 32.4 t ADT: 75

TR 162

Good

Over: RED RIVER

5.5MI SE,EUREKA, Woodford, IL

Built 1995 Load: 32.4 t ADT: 50

TR140

Good

Over: SNAG CREEK

1 M S OF CH 13, Woodford, IL

Built 1995 Load: 32.4 t ADT: 50

TR 47

Good

Over: SNAG CREEK

.25 MI E OF CH 13, Woodford, IL

Built 1995 Load: 32.4 t ADT: 50

TR 55

Good

Over: S BRHALLENBACK CR

1.6 M E OF CH 13, Woodford, IL

Built 1996 Load: 32.4 t ADT: 25

CH 24

Good

Over: TRIB OF RICHLAND CR

1 M E OF LOWPOINT, Woodford, IL

Built 1997 Load: 32.4 t ADT: 100

TR 39A

Good

Over: HALLENBACK CREEK

6.25 MI W MINONK, Woodford, IL

Built 1999 Load: 32.4 t ADT: 50

TR 49

Good

Over: S BR. CROW CREEK

1.5 MI SW MINONK, Woodford, IL

Built 2000 Load: 32.4 t ADT: 25

TR 89A

Good

Over: MUNDINGER CREEK

.8 MI +/- E 400E RD, Woodford, IL

Built 2004 Load: 32.4 t ADT: 100

TR 174

Good

Over: TRIB PANTHER CR

1 MI E ILL 116, Woodford, IL

Built 2007 Load: 32.4 t ADT: 100

FAS 358 (CH 1)

Good

Over: TRIB OF RICHLAND CRK

1 MI N OF CH 18, Woodford, IL

Built 2010 Load: 32.4 t ADT: 600

FAS 1357 (CH 18)

Good

Over: TRIB TO RICHLAND CRK

ON CH 18 E OF CH 1, Woodford, IL

Built 2010 Load: 32.4 t ADT: 325

TR 61A (1900N)

Good

Over: TRIB TO RICHLAND CRK

NECOR SEC25-T28NR2W, Woodford, IL

Built 2013 Load: 32.4 t ADT: 10

TR 55 (1950N)

Good

Over: Trib to Snag Cr

0.25 W CH 13, Woodford, IL

Built 2015 Load: 32.4 t ADT: 50

TR 95

Good

Over: PANTHER CREEK TRIB

3 mi W of US 51, Woodford, IL

Built 2016 Load: 32.4 t ADT: 50

CH 3

Good

Over: TRIB WALNUT CR

3.5 MI SE METAMORA, Woodford, IL

Built 2019 Load: 32.4 t ADT: 250

PLEASANT ST (0 663

Good

Over: TRIB W BR PANTHER CR

264' NORTH OF IL 116, Woodford, IL

Built 1991 Load: 32.4 t ADT: 200

WALNUT ST

Good

Over: SNAG CREEK

0.19 MI W OF ILL 89, Woodford, IL

Built 2007 Load: 32.4 t ADT: 250

IL 57

Good

Over: AUSTIN CREEK

.9M N I-172, Adams, IL

Built 1995 Load: 32.7 t ADT: 4,000

CH 20

Good

Over: CLEAR CREEK

.5 MI N DENNISON, Clark, IL

Built 1909 Load: 32.7 t ADT: 200

FAS 1669

Good

Over: STREAM

7.42MI W OF ILL-130, Coles, IL

Built 2014 Load: 32.7 t ADT: 2,200

I-290

Good

Over: DRAIN DTCH

0.2 M N BIESTERFIELD, Cook, IL

Built 1970 Load: 32.7 t ADT: 157,300

FAP 116(IL 130)

Good

Over: HURRICANE CREEK

3.5 MI N OF I-70, Cumberland, IL

Built 1993 Load: 32.7 t ADT: 2,500

I-57 (NB)

Good

Over: DRAINAGE DITCH

2.25 MI S OF US 36, Douglas, IL

Built 1968 Load: 32.7 t ADT: 10,150

FAP 749(IL 133)

Good

Over: TRIB SCATTERING FORK

5 MI E OF ARCOLA, Douglas, IL

Built 1990 Load: 32.7 t ADT: 2,300

FAU-8351

Good

Over: BRANCH SALT CREEK

0.25 MI N EFFINGHAM, Effingham, IL

Built 1977 Load: 32.7 t ADT: 500

US 45

Good

Over: SPECIAL DRAINAGE DIT

.9 M N OF IL9 PAXTON, Ford, IL

Built 1997 Load: 32.7 t ADT: 3,100

WAUPECAN RD TR 107

Good

Over: HOG RUN CREEK

.04 MI E LASALLE RD, Grundy, IL

Built 1993 Load: 32.7 t ADT: 50

BOWES ROAD

Good

Over: OTTER CREEK

.75M W OF RANDALL RD, Kane, IL

Built 2008 Load: 32.7 t ADT: 10,200

FARRAGUT AVENUE

Good

Over: PETTIBONE CK/ CRUSLEY DR

0.5 KM E OF SHERIDAN RD, Lake, IL

Built 2005 Load: 32.7 t ADT: 12,075

TR 310

Good

Over: OTTER CREEK

E 18TH N 1500, LaSalle, IL

Built 1921 Load: 32.7 t ADT: 400

IL 10

Good

Over: DUFF BRANCH

2.2M E IL 121, Logan, IL

Built 1998 Load: 32.7 t ADT: 2,200

FAS 369 (CH 1)

Good

Over: CREEK

T29NR1W 3PM SEC 15, Marshall, IL

Built 2005 Load: 32.7 t ADT: 275

TR 95

Good

Over: TRIB EDWARDS RIVER

SE-36-T15NR3W, Mercer, IL

Built 1999 Load: 32.7 t ADT: 25

MC GREGOR ROAD

Good

Over: UNNAMED STEAM

4 MI. NE. OF BYRON, Ogle, IL

Built 1991 Load: 32.7 t ADT: 200

TR 31

Good

Over: MUD CREEK

1 MI N SWANWICK, Perry, IL

Built 1900 Load: 32.7 t ADT: 75

FAS 1629(CH 11)

Good

Over: RICHLAND CREEK

.5 MI NE FANCHER, Shelby, IL

Built 1972 Load: 32.7 t ADT: 500

WARD DRIVE

Good

Over: ASH CREEK

260' NORTH OF PAUL REVERE, St. Clair, IL

Built 1990 Load: 32.7 t ADT: 12,500

Showing 21,901-21,950 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.