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

FAS 926

Good

Over: TRIB TO LINGLE CREEK

0.8 MI E OF IL 127, Union, IL

Built 1988 Load: 32.4 t ADT: 325

TR 115

Good

Over: UNNAMED STREAM

TRAIL TEARS FOREST, Union, IL

Built 1988 Load: 32.4 t ADT: 25

TR 115A

Good

Over: UNNAMED CREEK

TRAIL OF TEARS ST PK, Union, IL

Built 1997 Load: 32.4 t ADT: 10

NURSERY ROAD

Good

Over: TRIB TO CLEAR CREEK

UNION CO ST NURSERY, Union, IL

Built 1993 Load: 32.4 t ADT: 25

FAS 512(CH 8)

Good

Over: STREAM

2 MI W OF FAIRMOUNT, Vermilion, IL

Built 1959 Load: 32.4 t ADT: 1,750

IL 9(FAP 697)

Good

Over: STREAM

W OF RANKIN, Vermilion, IL

Built 1984 Load: 32.4 t ADT: 2,050

TR 211

Good

Over: TRIB STONY CREEK

3.5 MI NW OF FITHIAN, Vermilion, IL

Built 1992 Load: 32.4 t ADT: 50

IL 1 (FAP 332)

Good

Over: STREAM

1 MI S OF ROSSVILLE, Vermilion, IL

Built 2005 Load: 32.4 t ADT: 4,850

US 136(FAP 711)

Good

Over: MIDDLE FORK RIVER

3.1 MI W OF POTOMAC, Vermilion, IL

Built 2007 Load: 32.4 t ADT: 2,100

FAP 697

Good

Over: DITCH

E OF HOOPESTON, Vermilion, IL

Built 2010 Load: 32.4 t ADT: 1,350

IL 49 (FAP 840)

Good

Over: STREAM

2.6 MI S OF US 136, Vermilion, IL

Built 2008 Load: 32.4 t ADT: 1,150

TR 147

Good

Over: STONY CREEK

3 MI SE BISMARCK, Vermilion, IL

Built 1976 Load: 32.4 t ADT: 225

FAS 331(CH 10)

Good

Over: MIDDLEFORK VERMILION

.5 MI S OF POTOMAC, Vermilion, IL

Built 1979 Load: 32.4 t ADT: 450

TR 13 A

Good

Over: N FORK VERMILION RIV

1.5 MI S HOOPESTON, Vermilion, IL

Built 1978 Load: 32.4 t ADT: 200

TR 261

Good

Over: TRIB TO STONY CREEK

1.5 MI NW FITHIAN, Vermilion, IL

Built 1980 Load: 32.4 t ADT: 125

TR 3

Good

Over: N FORK VERMILION RIV

5 MI NE HOOPESTON, Vermilion, IL

Built 1980 Load: 32.4 t ADT: 50

TR 22 A

Good

Over: SALT FORK

4 MI NW FAIRMOUNT, Vermilion, IL

Built 1985 Load: 32.4 t ADT: 50

TR 328

Good

Over: N FORK VERMILION RIV

2 MI E HOOPESTON, Vermilion, IL

Built 1981 Load: 32.4 t ADT: 225

CH 18(FAS 513)

Good

Over: ARCHIE CREEK

1 MI S OF SIDELL, Vermilion, IL

Built 1985 Load: 32.4 t ADT: 200

TR 5B

Good

Over: STREAM

.75 MI NW CHENEYVILE, Vermilion, IL

Built 1985 Load: 32.4 t ADT: 125

TR 179 A

Good

Over: STREAM

3 MI NW DANVILLE, Vermilion, IL

Built 1985 Load: 32.4 t ADT: 950

CH 20(FAU 6998)

Good

Over: LAKE VERMILION TRIB

1.1 MI NW DANVILLE, Vermilion, IL

Built 1986 Load: 32.4 t ADT: 1,650

TR 373

Good

Over: FAIRVIEW DRAIN

3 MI NW GEORGETOWN, Vermilion, IL

Built 2007 Load: 32.4 t ADT: 125

TR 492 B

Good

Over: N BR VERMILION RIVER

6 MI SE CHENEYVILLE, Vermilion, IL

Built 1989 Load: 32.4 t ADT: 50

TR 296

Good

Over: STREAM

1 MI NW DANVILLE, Vermilion, IL

Built 1996 Load: 32.4 t ADT: 450

TR 492 B

Good

Over: STREAM

6 MI SE CHENEYVILLE, Vermilion, IL

Built 1992 Load: 32.4 t ADT: 50

TR 211

Good

Over: STREAM

4 MI N OF FITHIAN, Vermilion, IL

Built 2001 Load: 32.4 t ADT: 50

TR 397

Good

Over: SWANK CREEK

3 MI SE JAMAICA, Vermilion, IL

Built 2003 Load: 32.4 t ADT: 75

TR 318 A

Good

Over: STREAM

1 MI W VERM GROVE, Vermilion, IL

Built 2007 Load: 32.4 t ADT: 50

TR 135

Good

Over: KNIGHTS BRANCH

3 MI NW OF COLLISON, Vermilion, IL

Built 2005 Load: 32.4 t ADT: 50

TR 397

Good

Over: BAUM BRANCH

2 MI SW JAMAICA, Vermilion, IL

Built 2007 Load: 32.4 t ADT: 50

TR 291

Good

Over: STONY CREEK

1 MILE SE MUNCIE, Vermilion, IL

Built 2005 Load: 32.4 t ADT: 75

TR 164

Good

Over: SWANK CREEK

1.5 MI N INDIANOLA, Vermilion, IL

Built 2009 Load: 32.4 t ADT: 50

TR146

Good

Over: STREAM

2.0 MILE SE COLLISON, Vermilion, IL

Built 2004 Load: 32.4 t ADT: 300

TR 441

Good

Over: STREAM

2.4MI. E. OLIVET, Vermilion, IL

Built 2004 Load: 32.4 t ADT: 100

TR 97

Good

Over: Branch Middle Fork

W of Armstrong, Vermilion, IL

Built 2013 Load: 32.4 t ADT: 150

TR 373

Good

Over: FAYETTE CREEK

4 MI S CATLIN, Vermilion, IL

Built 2006 Load: 32.4 t ADT: 50

POLAND RD(FAU 6996

Good

Over: STONY CREEK

2.5 MI NE DANVILLE, Vermilion, IL

Built 2011 Load: 32.4 t ADT: 625

TR 92

Good

Over: JORDAN CREEK

IN JAMAICA, Vermilion, IL

Built 2012 Load: 32.4 t ADT: 25

TR 16

Good

Over: Stream

1 MI west of Rankin, Vermilion, IL

Built 2012 Load: 32.4 t ADT: 50

TR 225

Good

Over: STREAM

2.5 MI W NEWTOWN, Vermilion, IL

Built 2011 Load: 32.4 t ADT: 75

TR78/600 E

Good

Over: TRIB TO FEATHER CR

3 MI NE MUNCIE, Vermilion, IL

Built 2011 Load: 32.4 t ADT: 50

TR 160

Good

Over: SWANK CREEK

3 MI SE JAMAICA, Vermilion, IL

Built 2011 Load: 32.4 t ADT: 20

TR-274

Good

Over: Little Vermilion Riv

2 mi NW Verm Grove, Vermilion, IL

Built 2018 Load: 32.4 t ADT: 75

TR 131

Good

Over: STREAM

3 MI SE ARMSTRONG, Vermilion, IL

Built 2013 Load: 32.4 t ADT: 50

TR 383

Good

Over: Swank Creek

3 MI E Jamaica, Vermilion, IL

Built 2015 Load: 32.4 t ADT: 50

TR 222

Good

Over: Fayette Creek

2 MI NE Indianola, Vermilion, IL

Built 2014 Load: 32.4 t ADT: 50

FAS 331 (CH 21)

Good

Over: Collison Branch

East Edge Collison, Vermilion, IL

Built 2016 Load: 32.4 t ADT: 450

TR-62

Good

Over: Bluegrass Creek

2.2 mi S of Reilly, Vermilion, IL

Built 2017 Load: 32.4 t ADT: 50

TR 155

Good

Over: STREAM

2 MI SW BISMARK, Vermilion, IL

Built 1980 Load: 32.4 t ADT: 150

Showing 21,201-21,250 of 27,743 bridges

Related

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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.