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 0135

Good

Over: TRIB BEAVER CR

3 MI SE BUNGAY, Hamilton, IL

Built 1998 Load: 32.4 t ADT: 25

FAS 1879

Good

Over: TRIB SULLIVAN BRANCH

8 MI S DAHLGREN, Hamilton, IL

Built 1999 Load: 32.4 t ADT: 650

FAS 878

Good

Over: HAW CREEK

3 MI E ADEN, Hamilton, IL

Built 1999 Load: 32.4 t ADT: 100

FAS 1879 (CH 17)

Good

Over: SULLIVAN CREEK

5 MI S DAHLGREN, Hamilton, IL

Built 2000 Load: 32.4 t ADT: 650

TR 181A

Good

Over: SULLIVAN BRANCH

6 MI S DAHLGREN, Hamilton, IL

Built 2000 Load: 32.4 t ADT: 25

CH 13

Good

Over: TRIB HOGG CREEK

8 MI SW DALE, Hamilton, IL

Built 2000 Load: 32.4 t ADT: 50

TR 290

Good

Over: CONTRARY CREEK

1.75 MI WSW DALE, Hamilton, IL

Built 2003 Load: 32.4 t ADT: 100

FAS 1898

Good

Over: LICK CREEK

4 MI N FEAKEYVILLE, Hamilton, IL

Built 2002 Load: 32.4 t ADT: 175

FAS 2870-CH 5

Good

Over: RECTOR CREEK

4.5 MI W WALPOLE, Hamilton, IL

Built 2002 Load: 32.4 t ADT: 50

FAS 879 -CH 6

Good

Over: TRIB RECTOR CREEK

6.5 MI W BROUGHTON, Hamilton, IL

Built 2002 Load: 32.4 t ADT: 175

TR 369

Good

Over: N FK SALINE RIVER

2 MI E DALE, Hamilton, IL

Built 2003 Load: 32.4 t ADT: 25

TR 493

Good

Over: MIDDLE FORK CREEK

4 MI NW CORNERVILLE, Hamilton, IL

Built 2002 Load: 32.4 t ADT: 50

TR 283

Good

Over: CONTRARY CREEK

4.3MI SW MCLEANSBORO, Hamilton, IL

Built 2003 Load: 32.4 t ADT: 25

TR 400

Good

Over: RILEY CREEK

5.5 SE MCLEANSBORO, Hamilton, IL

Built 2003 Load: 32.4 t ADT: 25

TR 129A

Good

Over: TRIB. BIG CREEK

3.5 MI N MCLEANSBORO, Hamilton, IL

Built 2003 Load: 32.4 t ADT: 10

TR 409

Good

Over: TRIB TO HOGG CR

6 MI SW DALE, Hamilton, IL

Built 2004 Load: 32.4 t ADT: 50

TR 454

Good

Over: RADER'S BRANCH DRAIN

0.75 MI N BUNGAY, Hamilton, IL

Built 2005 Load: 32.4 t ADT: 10

TR 95

Good

Over: BIG CREEK

2.75 MI W DELAFIELD, Hamilton, IL

Built 2005 Load: 32.4 t ADT: 75

TR 236

Good

Over: AUXIER CREEK DITCH

1.25 MI N BELLE PRAI, Hamilton, IL

Built 2005 Load: 32.4 t ADT: 50

TR 182

Good

Over: RECTOR CREEK

1.5 MI SW WALPOLE, Hamilton, IL

Built 2006 Load: 32.4 t ADT: 25

TR 229

Good

Over: SULLIVAN BRANCH

2.5 MI NE MACEDONIA, Hamilton, IL

Built 2006 Load: 32.4 t ADT: 10

TR-318

Good

Over: CONTRARY CREEK

1.2 MI SW DALE, Hamilton, IL

Built 2007 Load: 32.4 t ADT: 10

TR-52

Good

Over: SHELTON CREEK

NE DAHLGREN, Hamilton, IL

Built 2010 Load: 32.4 t ADT: 125

TR-239A

Good

Over: LAKEY CREEK

1.75 MI SE MCLEANSBO, Hamilton, IL

Built 2007 Load: 32.4 t ADT: 50

TR-149

Good

Over: TRIB BIG CREEK

3 MI NW MCLEANSBORO, Hamilton, IL

Built 2008 Load: 32.4 t ADT: 25

TR-362

Good

Over: WOLF CREEK

2 MI SE BLAIRSVILLE, Hamilton, IL

Built 2008 Load: 32.4 t ADT: 25

TR-228

Good

Over: HOGG CREEK

3.75 MI SW DALE, Hamilton, IL

Built 2008 Load: 32.4 t ADT: 25

TR-200

Good

Over: TEN MILE CREEK

2.5MI SW MCLEANSBORO, Hamilton, IL

Built 2010 Load: 32.4 t ADT: 50

TR-376

Good

Over: SOUTHERN OUTLET DR

1.3 MI N BLAIRSVILLE, Hamilton, IL

Built 2010 Load: 32.4 t ADT: 10

TR-234

Good

Over: TRIB BIG CREEK

1.8 MI S PIOPOLIS, Hamilton, IL

Built 2009 Load: 32.4 t ADT: 50

TR 107

Good

Over: TRIB BIG CREEK

4 MI N. MCLEANSBORO, Hamilton, IL

Built 2012 Load: 32.4 t ADT: 10

TR 454 - 1600E

Good

Over: SOUTHERN OUTLET DR

2 MI N BUNGAY, Hamilton, IL

Built 2011 Load: 32.4 t ADT: 10

TR-296B

Good

Over: SOUTHERN OUTLET

2.6 MI ESE PIOPOLIS, Hamilton, IL

Built 2011 Load: 32.4 t ADT: 10

TRIB TO TEN MILE C

Good

Over: 475E

5 MI SW MCLEANSBORO, Hamilton, IL

Built 2014 Load: 32.4 t ADT: 10

TR 178

Good

Over: DUCK POND LATERAL

2M NW BELLE PRARIE, Hamilton, IL

Built 2012 Load: 32.4 t ADT: 25

1350 E

Good

Over: RILEY CREEK

2.75 MI W DOLAN LAKE, Hamilton, IL

Built 2014 Load: 32.4 t ADT: 25

400 E

Good

Over: MIDDLE CREEK

1.75MI SW DELAFIELD, Hamilton, IL

Built 2015 Load: 32.4 t ADT: 50

TR-486

Good

Over: South Outlet Drain

1.5MI N Bungay, Hamilton, IL

Built 2017 Load: 32.4 t ADT: 10

tr-178

Good

Over: TRIB TO AUXIER CREEK

3MI NW BELLE PRAIRIE, Hamilton, IL

Built 2017 Load: 32.4 t ADT: 25

FAS-878

Good

Over: TRIB GARRISON LATERL

3 MI W ADEN, Hamilton, IL

Built 1979 Load: 32.4 t ADT: 350

TR-82B

Good

Over: CAMPBELL BRANCH

4 MI NE MACEDONIA, Hamilton, IL

Built 1982 Load: 32.4 t ADT: 75

CH-9

Good

Over: WHITE OAK CREEK

2.5 MI N DELAFIELD, Hamilton, IL

Built 1989 Load: 32.4 t ADT: 275

WARSAW (IL 96) SPU

Good

Over: GLEN CREEK

.2M W IL96/E WARSAW, Hancock, IL

Built 1995 Load: 32.4 t ADT: 1,250

OLD IL 94

Good

Over: TRIB TO PRAIRE CR

.52 SOUTH OF 136, Hancock, IL

Built 2006 Load: 32.4 t ADT: 775

US136/336

Good

Over: TRIB TO PRARIE CR

2.3M E OF CARTHAGE, Hancock, IL

Built 2012 Load: 32.4 t ADT: 4,000

TR 6

Good

Over: LITTLE CREEK

3.5 SE LAHARPE, Hancock, IL

Built 1997 Load: 32.4 t ADT: 75

FAS 428 (CH 11)

Good

Over: Bear Creek

1.7 mi W Basco, Hancock, IL

Built 2016 Load: 32.4 t ADT: 500

CH 14

Good

Over: SPRING CREEK

2 M NW LAHARPE, Hancock, IL

Built 2012 Load: 32.4 t ADT: 75

CH-23

Good

Over: BEAR CREEK

4.4M W OF WEST POINT, Hancock, IL

Built 2006 Load: 32.4 t ADT: 100

CO HWY 24

Good

Over: N BRN LARRY'S CREEK

3.5M SW POWELLTON, Hancock, IL

Built 1994 Load: 32.4 t ADT: 850

Showing 17,401-17,450 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.