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 167

Good

Over: GARR CREEK

0.5 MI SE IRWIN, Kankakee, IL

Built 1990 Load: 32.4 t ADT: 375

TR 135

Good

Over: HORSE CREEK

1.5 MI N HERSCHER, Kankakee, IL

Built 1991 Load: 32.4 t ADT: 25

TR36A

Good

Over: TRIB. OF HORSE CREEK

3.5 MI S OF HERSHER, Kankakee, IL

Built 1992 Load: 32.4 t ADT: 25

TR 6

Good

Over: REDDICK RUN

3 MI W BUCKINGHAM, Kankakee, IL

Built 1991 Load: 32.4 t ADT: 25

TR 102

Good

Over: TRIBUTARY OF ROCK CR

2 MI NE OF DESELM, Kankakee, IL

Built 1992 Load: 32.4 t ADT: 100

TR 60

Good

Over: LEHIGH RAYMOND RUN

1MI E GOODRICH, Kankakee, IL

Built 1994 Load: 32.4 t ADT: 75

TR 80

Good

Over: GARR CREEK

1 MI S OF IRWIN, Kankakee, IL

Built 1992 Load: 32.4 t ADT: 50

TR 118

Good

Over: TRIB. OF ROCK CR

5 MI. NW OF MANTENO, Kankakee, IL

Built 1992 Load: 32.4 t ADT: 75

TR 182

Good

Over: MARSHALL SLOUGH

6 M NE MANTENO, Kankakee, IL

Built 1993 Load: 32.4 t ADT: 50

TR 104A

Good

Over: BR ROCK CREEK

2.69MI E OF DESLEM, Kankakee, IL

Built 1995 Load: 32.4 t ADT: 50

CH19

Good

Over: U.P.S RR

.99 MI E OF RT1, Kankakee, IL

Built 2013 Load: 32.4 t ADT: 25

TR 165A

Good

Over: BR OF HORSE CREEK

3.8 MI E OF HERCHER, Kankakee, IL

Built 1996 Load: 32.4 t ADT: 225

TR108

Good

Over: MINNIE CREEK

3 MI E IRWIN, Kankakee, IL

Built 1996 Load: 32.4 t ADT: 25

FAS 1309 (CH 42)

Good

Over: FARR CREEK

1MI N OF IL 17, Kankakee, IL

Built 2002 Load: 32.4 t ADT: 375

FAS 1328 (CH54)

Good

Over: FARR CREEK

7300E 3000N, Kankakee, IL

Built 2006 Load: 32.4 t ADT: 3,050

TR 63 C

Good

Over: FARR CREEK

4 MI WNW MOMENCE, Kankakee, IL

Built 1998 Load: 32.4 t ADT: 2,100

TR 147

Good

Over: MACON RIVER

3.5 MI SE REDDICK, Kankakee, IL

Built 1997 Load: 32.4 t ADT: 50

CH 12

Good

Over: HORSE CREEK

.2 MI N HERSCHER, Kankakee, IL

Built 1999 Load: 32.4 t ADT: 2,000

FAS 319/CH 12

Good

Over: HORSE CREEK

1.7 MI N OF HERSCHER, Kankakee, IL

Built 1999 Load: 32.4 t ADT: 1,600

TR 7A

Good

Over: ROCK CREEK

2.3 MI NE OF MANTENO, Kankakee, IL

Built 1999 Load: 32.4 t ADT: 100

TR 119

Good

Over: HORSE CREEK

2.8 MI S BONFIELD, Kankakee, IL

Built 2001 Load: 32.4 t ADT: 75

TR 29

Good

Over: TOWER CREEK

8500E, 7000N, Kankakee, IL

Built 2001 Load: 32.4 t ADT: 400

TR 56

Good

Over: TERRY CREEK

5600N, 9250W, Kankakee, IL

Built 2001 Load: 32.4 t ADT: 25

TR 20A

Good

Over: TRIB TO CRANE CREEK

0.7 MI S.BUCKINGHAM, Kankakee, IL

Built 2001 Load: 32.4 t ADT: 100

TR 20

Good

Over: DRAINAGE DITCH

16000W, 1250S, Kankakee, IL

Built 2003 Load: 32.4 t ADT: 175

TR 32

Good

Over: TRIB W BRANCH HORSE

.75 MI N IL 115, Kankakee, IL

Built 2002 Load: 32.4 t ADT: 150

TR 20

Good

Over: E BR CRANE CREEK

0.79 MI N IL 115, Kankakee, IL

Built 2004 Load: 32.4 t ADT: 175

TR 266

Good

Over: DRAINAGE DITCH

17000E, 1000N(APPR.), Kankakee, IL

Built 2003 Load: 32.4 t ADT: 100

CH 55

Good

Over: DRAINAGE DITCH

1500E, 6750S, Kankakee, IL

Built 2003 Load: 32.4 t ADT: 250

TR 27

Good

Over: ROCK CREEK

7000N, 2600W, Kankakee, IL

Built 2004 Load: 32.4 t ADT: 50

TR 50

Good

Over: HORSE CREEK

1 MI W GOODRICH, Kankakee, IL

Built 2005 Load: 32.4 t ADT: 50

TR 113

Good

Over: DRAINAGE DITCH

17750E 0000N, Kankakee, IL

Built 2007 Load: 32.4 t ADT: 75

CH 38

Good

Over: BAKER CR

1.5 MI N AROMA PARK, Kankakee, IL

Built 2008 Load: 32.4 t ADT: 3,000

TR 173

Good

Over: REDDICK RUN

18300W 6000S, Kankakee, IL

Built 2006 Load: 32.4 t ADT: 25

TR 222

Good

Over: DRAINAGE DITCH

11250N 11000E, Kankakee, IL

Built 2007 Load: 32.4 t ADT: 425

TR 63

Good

Over: EXLINE SLOUGH

4 MI NE BOURBONAIS, Kankakee, IL

Built 2008 Load: 32.4 t ADT: 2,600

TR 177 B

Good

Over: TRIB HORSE CREEK

13700 W 7000 S, Kankakee, IL

Built 2009 Load: 32.4 t ADT: 50

TR 173(6000S)

Good

Over: BR REDDICK RUN

5 MI S REDDICK, Kankakee, IL

Built 2012 Load: 32.4 t ADT: 25

FAS-314 (CH-13)

Good

Over: Creek

1.41 SW Sherbunvilk, Kankakee, IL

Built 2016 Load: 32.4 t ADT: 325

CH-19

Good

Over: Trim Creek

3.5 Mi N Momence, Kankakee, IL

Built 2015 Load: 32.4 t ADT: 25

TR-165

Good

Over: Creek

4 MI. SO. REDDICK, Kankakee, IL

Built 2017 Load: 32.4 t ADT: 50

TR 2A

Good

Over: Williams Ditch

65. Mi E Momence, Kankakee, IL

Built 2016 Load: 32.4 t ADT: 25

TR 063

Good

Over: SOLDIERS CREEK

2.7 MI NE BOURBONAIS, Kankakee, IL

Built 2019 Load: 32.4 t ADT: 2,600

FAU 6195 5TH AVE

Good

Over: SOLDIER CREEK

0.11 MI N OF ILL 17, Kankakee, IL

Built 2005 Load: 32.4 t ADT: 5,850

ILL 126

Good

Over: AUX SABLE CR

7 MI E OF ILL 71, Kendall, IL

Built 1997 Load: 32.4 t ADT: 6,650

US RTE 52

Good

Over: LISBON CREEK

0.05 MI E OF ILL 47, Kendall, IL

Built 2001 Load: 32.4 t ADT: 3,500

US 52 FAP 607

Good

Over: AUX SABLE CR

2.2 MI E OF IL 47, Kendall, IL

Built 2009 Load: 32.4 t ADT: 3,500

PVT FIELD ENTR

Good

Over: LISBON CR/DITCH

2 MI E OF IL 47, Kendall, IL

Built 2009 Load: 32.4 t ADT: 10

CRIMMINS ROAD

Good

Over: UNK CREEK

1 MI N OF NEWARK, Kendall, IL

Built 1977 Load: 32.4 t ADT: 900

MILLHURST ROAD TR

Good

Over: BIG ROCK CREEK

.1MI W OF FOX RVR DR, Kendall, IL

Built 1986 Load: 32.4 t ADT: 2,100

Showing 18,351-18,400 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.