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

FAU 7014

Good

Over: TRIB GRAPE CREEK

E EDGE BELGIUM, Vermilion, IL

Built 1985 Load: 32.4 t ADT: 175

TR 470

Good

Over: STREAM

1 MI NW HUMRICK, Vermilion, IL

Built 1986 Load: 32.4 t ADT: 75

TR 121

Good

Over: STREAM

2.5 MI SW ARMSTRONG, Vermilion, IL

Built 1987 Load: 32.4 t ADT: 50

TR 297

Good

Over: TRIB SALT FK VERM R

2.5 MI NW OF CATLIN, Vermilion, IL

Built 1987 Load: 32.4 t ADT: 150

TR 451

Good

Over: N FORK VERMILION RIV

0.4 MI W VERM GROVE, Vermilion, IL

Built 1987 Load: 32.4 t ADT: 150

TR 291

Good

Over: TRIB TO SALT FORK

2.5 MI SW OF FITHIAN, Vermilion, IL

Built 1993 Load: 32.4 t ADT: 75

TR 58

Good

Over: ARCHIE CREEK

1.5 MI S SIDELL, Vermilion, IL

Built 2010 Load: 32.4 t ADT: 50

KELLY AVE(FAU7014)

Good

Over: STREAM

E EDGE OF BELGIUM, Vermilion, IL

Built 1991 Load: 32.4 t ADT: 175

CH 33

Good

Over: STREAM

2 MI SW BISMARCK, Vermilion, IL

Built 1992 Load: 32.4 t ADT: 1,150

Winter Ave(FAU 699

Good

Over: LICK CREEK

NE EDGE OF DANVILLE, Vermilion, IL

Built 1994 Load: 32.4 t ADT: 3,700

FAU 7000(HUNGRY HO

Good

Over: STREAM

.5 MI W DANVILLE, Vermilion, IL

Built 1996 Load: 32.4 t ADT: 1,450

CH 33

Good

Over: STREAM

1 MI S OF BISMARCK, Vermilion, IL

Built 1996 Load: 32.4 t ADT: 1,150

FAS 496 (CH 14)

Good

Over: STREAM

4MI. N POTOMAC, Vermilion, IL

Built 2004 Load: 32.4 t ADT: 350

FAS 504(TR 501)

Good

Over: Stream

2.5 mi E of Westvill, Vermilion, IL

Built 2015 Load: 32.4 t ADT: 150

WILLIAMS(FAU 7003)

Good

Over: STONY CREEK

E. CENTRAL DANVILLE, Vermilion, IL

Built 1938 Load: 32.4 t ADT: 2,650

FAU 7026(EMERSON S

Good

Over: CNRL RR

TILTON-EMERSON ST., Vermilion, IL

Built 1997 Load: 32.4 t ADT: 900

FAU 7010(14TH ST)

Good

Over: N&S RR

14TH ST/N&S RR, Vermilion, IL

Built 2009 Load: 32.4 t ADT: 3,800

FAU 7009(CH 7) 5TH

Good

Over: CSX RR

14TH ST @ TILTON, Vermilion, IL

Built 2002 Load: 32.4 t ADT: 4,900

4TH ST

Good

Over: N&S RR

0.5 MI NNE I74&IL1, Vermilion, IL

Built 2003 Load: 32.4 t ADT: 1,700

Fairchild

Good

Over: Collett, CXST, NSR

East of Section, Vermilion, IL

Built 2014 Load: 32.4 t ADT: 5,250

Fairchild

Good

Over: CSXT

West of Bowman, Vermilion, IL

Built 2014 Load: 32.4 t ADT: 5,250

FAU-7046 Griffin S

Good

Over: Stony Creek

City of Danville, Vermilion, IL

Built 2015 Load: 32.4 t ADT: 525

TR-92

Good

Over: COFFEE CREEK

BEALL WOODS ST PARK, Wabash, IL

Built 1997 Load: 32.4 t ADT: 100

MILL STREET-WHITE

Good

Over: BONPAS CREEK

E EDGE GRAYVILLE, Wabash, IL

Built 1977 Load: 32.4 t

CH-11 (EDWARDS CO)

Good

Over: BONPAS CREEK

0.5 MI W COWLING, Wabash, IL

Built 1981 Load: 32.4 t

TR-137 (EDWARDS CO

Good

Over: BONPAS CREEK

2.5 MI N BROWNS, Wabash, IL

Built 1981 Load: 32.4 t ADT: 25

TR-69 (EDWARDS CO)

Good

Over: BONPAS CREEK

5 MI SW LANCASTER, Wabash, IL

Built 1983 Load: 32.4 t ADT: 35

TR-3

Good

Over: LITTLE BONPAS CREEK

2 MI NW LANCASTER, Wabash, IL

Built 1982 Load: 32.4 t ADT: 25

TR-14

Good

Over: CREEK

1.5 MI NE COWLING, Wabash, IL

Built 1982 Load: 32.4 t ADT: 50

TR-24

Good

Over: FORDICE CREEK

2.5 MI SSW GARDS PT, Wabash, IL

Built 1984 Load: 32.4 t ADT: 35

TR-4

Good

Over: DRAINAGE DITCH

1 MI N COWLING, Wabash, IL

Built 1985 Load: 32.4 t ADT: 75

TR-175 (EDWARDS CO

Good

Over: BONPAS CREEK

3 MI WSW BELMONT, Wabash, IL

Built 1986 Load: 32.4 t ADT: 50

TR-80

Good

Over: COFFEE CREEK

0.5 MI NE KEENSBURG, Wabash, IL

Built 1986 Load: 32.4 t ADT: 35

TR-47

Good

Over: TRIB CRAWFISH CREEK

2 MI SW ALLENDALE, Wabash, IL

Built 1988 Load: 32.4 t ADT: 100

TR-21

Good

Over: CRAWFISH CREEK

4 MI NE LANCASTER, Wabash, IL

Built 1987 Load: 32.4 t ADT: 50

TR-58

Good

Over: TRIB BONPAS CREEK

0.75 MI NW KEENSBURG, Wabash, IL

Built 1989 Load: 32.4 t ADT: 50

TR-112

Good

Over: TRIB CRAWFISH CREEK

1 MI E FRIENDSVILLE, Wabash, IL

Built 1989 Load: 32.4 t ADT: 50

TR-155

Good

Over: NORFOLK SOUTHERN RR

1 MI SW MT CARMEL, Wabash, IL

Built 1989 Load: 32.4 t ADT: 375

TR-4

Good

Over: TRIB BONPAS CREEK

2.5 MI W BELLMONT, Wabash, IL

Built 1990 Load: 32.4 t ADT: 50

TR-85

Good

Over: CREEK

3.5 MI S LANCASTER, Wabash, IL

Built 1993 Load: 32.4 t ADT: 50

TR-134

Good

Over: CRAWFISH CREEK

2.25 MI NE FRIENDSVL, Wabash, IL

Built 1993 Load: 32.4 t ADT: 50

TR-197 (EDWARDS CO

Good

Over: BONPAS CREEK

2 MI NW COWLING, Wabash, IL

Built 1992 Load: 32.4 t ADT: 75

TR-26

Good

Over: JORDAN CREEK

4.5 MI SW LANCASTER, Wabash, IL

Built 1995 Load: 32.4 t ADT: 35

TR 23

Good

Over: DRAINAGE DITCH

1 MI N ALLENDALE, Wabash, IL

Built 1998 Load: 32.4 t ADT: 50

TR 89

Good

Over: CREEK

4 MI S LANCASTER, Wabash, IL

Built 1999 Load: 32.4 t ADT: 35

TR 134

Good

Over: TRIB TO WABASH RIVER

1.5 MI N MT CARMEL, Wabash, IL

Built 2000 Load: 32.4 t ADT: 200

TR 4

Good

Over: DRAINAGE DITCH

2 MI W BELLMONT, Wabash, IL

Built 2001 Load: 32.4 t ADT: 100

FAS 811

Good

Over: FORDICE CREEK

2 MI SO GARDS POINT, Wabash, IL

Built 2003 Load: 32.4 t ADT: 275

TR 21

Good

Over: CREEK

2.5 MI E LANCASTER, Wabash, IL

Built 2004 Load: 32.4 t ADT: 50

FAS 811

Good

Over: FORDICE CR LATERAL

2.24 MI S GARDS PT, Wabash, IL

Built 2004 Load: 32.4 t ADT: 275

Showing 21,251-21,300 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.