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

US 6/34

Good

Over: DRAINAGE DITCH

.5 MI. W. WYANET, Bureau, IL

Built 1993 Load: 32.4 t ADT: 2,000

CH 23

Good

Over: PLOW HOLLOW CREEK

1 MI E OF TISKILWA, Bureau, IL

Built 1998 Load: 32.4 t ADT: 375

CH 19

Good

Over: EAST BR BUREAU CREEK

1 MI. N. OF ZEARING, Bureau, IL

Built 1997 Load: 32.4 t ADT: 100

CO HIGHWAY 33

Good

Over: BRUSH CREEK

3 MI NW OF LADD, Bureau, IL

Built 2004 Load: 32.4 t ADT: 450

FAS-1235 (CH-19)

Good

Over: Br East Bureau Cr

2 Mi. NE Malden, Bureau, IL

Built 2017 Load: 32.4 t ADT: 100

FAS 188/CH 8 (1400

Good

Over: TRIB W. BUREAU CREEK

7 MI. S. OF WALNUT, Bureau, IL

Built 1991 Load: 32.4 t ADT: 650

FAS 184/ CH 11

Good

Over: BUREAU CREEK

1.5 MI N LAMOILLE, Bureau, IL

Built 2011 Load: 32.4 t ADT: 775

FAS 1220/CH 12-220

Good

Over: LIME CREEK

5.5 MI N PRINCETON, Bureau, IL

Built 2006 Load: 32.4 t ADT: 325

FAS 253/CH 10

Good

Over: COAL CREEK

2 MI N OF MINERAL, Bureau, IL

Built 1987 Load: 32.4 t ADT: 250

FAS 243

Good

Over: GREEN RIVER

.5 M SE NEW BEDFORD, Bureau, IL

Built 1948 Load: 32.4 t ADT: 325

VAN ORIN RD / CH 2

Good

Over: BUREAU CREEK

2.5 MI W OF LAMOILLE, Bureau, IL

Built 1989 Load: 32.4 t ADT: 250

FAS 242

Good

Over: SILVER CREEK

2 MI E OF IL 40, Bureau, IL

Built 2001 Load: 32.4 t ADT: 675

FAS 242 (CH 16)

Good

Over: SPOON RIVER

4.5 MI. SE. NEPONSET, Bureau, IL

Built 1995 Load: 32.4 t ADT: 450

CO HWY 17, FAS 249

Good

Over: CROW CREEK

9 MI S OF TISKILWA, Bureau, IL

Built 2008 Load: 32.4 t ADT: 175

FAS 188A/CH 8

Good

Over: BNSF RAILROAD

WEST EDGE WYANET, Bureau, IL

Built 1999 Load: 32.4 t ADT: 1,000

FAS 188A/CH8

Good

Over: HENNEPIN CANAL/IAIS

S EDGE WYANET, Bureau, IL

Built 2011 Load: 32.4 t ADT: 1,000

FAS-1220 (CH-12)

Good

Over: Br West Bureau Cr

5.0 MI NW PRINCETON, Bureau, IL

Built 2017 Load: 32.4 t ADT: 300

TR 240

Good

Over: PLOW HOLLOW CREEK

1 m se Tiskilwa, Bureau, IL

Built 2012 Load: 32.4 t ADT: 100

TOWNSHIP ROAD 209

Good

Over: BRUSH CREEK

2.5 M N SEATONVILLE, Bureau, IL

Built 1978 Load: 32.4 t ADT: 50

TR 200

Good

Over: WEST BUREAU CREEK

4 MI N OF WYANET, Bureau, IL

Built 1978 Load: 32.4 t ADT: 50

TR 216

Good

Over: LIME CREEK

5 M NW OF PRINCETON, Bureau, IL

Built 1986 Load: 32.4 t ADT: 50

TR 380

Good

Over: PIKE CREEK

2 MI. N.E. LAMOILLE, Bureau, IL

Built 2006 Load: 32.4 t ADT: 25

TR 9

Good

Over: PIKE CREEK

5 MI NE LAMOILLE, Bureau, IL

Built 2001 Load: 32.4 t ADT: 25

TR 396

Good

Over: PIKE CREEK

6 MI NE OF LAMOILLE, Bureau, IL

Built 1996 Load: 32.4 t ADT: 10

1200 E (TR 148)

Good

Over: POND CREEK

2 MI. W. WYANET, Bureau, IL

Built 1993 Load: 32.4 t ADT: 50

TR 232

Good

Over: UNNAMED STREAM

2 MI NW OF PRINCETON, Bureau, IL

Built 1989 Load: 32.4 t ADT: 50

TR 109

Good

Over: Branch Lime Creek

6 Mi NW Princeton, Bureau, IL

Built 2013 Load: 32.4 t ADT: 150

TR 109

Good

Over: Branch Lime Creek

6 Mi NW Princeton, Bureau, IL

Built 2013 Load: 32.4 t ADT: 150

TOWNSHIP ROAD 93

Good

Over: FAIRFIELD DITCH

1 MI S OF THOMAS, Bureau, IL

Built 1980 Load: 32.4 t ADT: 25

TR 55

Good

Over: UNION DITCH

4.5 MI SE YORKTOWN, Bureau, IL

Built 2012 Load: 32.4 t ADT: 50

TR 60-B

Good

Over: HICKORY CREEK

3.5 MI. NW SHEFFIELD, Bureau, IL

Built 1994 Load: 32.4 t ADT: 75

TR 70

Good

Over: HICKORY SMITH DITCH

3.5 MI N OF SHEFFILD, Bureau, IL

Built 2002 Load: 32.4 t ADT: 25

TR-10

Good

Over: HICKORY SMITH DITCH

2 MI. N OF MINERAL, Bureau, IL

Built 2004 Load: 32.4 t ADT: 25

TR 132

Good

Over: CROOKED CREEK

4 MI. E. NEW BEDFORD, Bureau, IL

Built 1997 Load: 32.4 t ADT: 175

TR 251

Good

Over: SPRING CREEK

1 MI. E. OF LADD, Bureau, IL

Built 2008 Load: 32.4 t ADT: 750

TR 398

Good

Over: Spring Creek

NE Edge Spring Valle, Bureau, IL

Built 2013 Load: 32.4 t ADT: 725

TR 317

Good

Over: CROOKED RUN STREAM

3 MI. NW. TISKILWA, Bureau, IL

Built 1992 Load: 32.4 t ADT: 50

TR 317

Good

Over: BR. OF BUREAU CREEK

NW. EDGE OF TISKILWA, Bureau, IL

Built 1992 Load: 32.4 t ADT: 50

TR 189

Good

Over: HICKORY CREEK

4 MI SW OF MANLIUS, Bureau, IL

Built 1994 Load: 32.4 t ADT: 50

TR 106

Good

Over: HICKORY CREEK

2 miles SW of Manliu, Bureau, IL

Built 2012 Load: 32.4 t ADT: 10

TR 175

Good

Over: Smith Ditch

4 Mi SW Manlius, Bureau, IL

Built 2014 Load: 32.4 t ADT: 125

TR 206

Good

Over: CROW CREEK

7 MI. E. OF BRADFORD, Bureau, IL

Built 1999 Load: 32.4 t ADT: 25

TR 136

Good

Over: FOX CREEK

3 miles NW of Milo, Bureau, IL

Built 2012 Load: 32.4 t ADT: 50

TR 154

Good

Over: Fox Creek

5 mi NE Bradford, Bureau, IL

Built 2016 Load: 32.4 t ADT: 50

TR 257 (N 1600 AVE

Good

Over: KING CREEK

SW EDGE OF MINERAL, Bureau, IL

Built 2010 Load: 32.4 t ADT: 75

TR 46

Good

Over: W Fork Spoon River

3 Mi S Neponset, Bureau, IL

Built 2013 Load: 32.4 t ADT: 25

TR-2

Good

Over: W FORK SPOON RIVER

3.5 M SW NEPONSET, Bureau, IL

Built 2017 Load: 32.4 t ADT: 75

TR 89

Good

Over: LIME CREEK

0.5 MI. E. KASBEER, Bureau, IL

Built 1994 Load: 32.4 t ADT: 50

TR 264

Good

Over: LIME CREEK

1/2 MI SE OF KASBEER, Bureau, IL

Built 2003 Load: 32.4 t ADT: 50

TR 245

Good

Over: BUREAU CREEK

1.5 MI. W. PRINCETON, Bureau, IL

Built 2007 Load: 32.4 t ADT: 325

Showing 15,301-15,350 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.