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 336

Good

Over: BUCK CREEK

0.5 MI SE GRIDLEY, McLean, IL

Built 2006 Load: 32.4 t ADT: 375

TR 25

Good

Over: BUCK CREEK

2.5 MI SSE GRIDLEY, McLean, IL

Built 2012 Load: 32.4 t ADT: 75

FAS 1361 CH 6

Good

Over: Loving Branch

4.2 mi SSW Gridley, McLean, IL

Built 2015 Load: 32.4 t ADT: 275

FAS 473

Good

Over: MONEY CREEK

2580 N, 1750 E, McLean, IL

Built 1996 Load: 32.4 t ADT: 900

TR 103

Good

Over: TRIB OF BIG SLOUGH

2.8 MI NE HUDSON, McLean, IL

Built 1992 Load: 32.4 t ADT: 50

TR 306

Good

Over: BIG SLOUGH

3.0 MI ESE HUDSON, McLean, IL

Built 1995 Load: 32.4 t ADT: 75

TR 268

Good

Over: BR.MACKINAW RIVER

3.8 MI NNE HUDSON, McLean, IL

Built 2002 Load: 32.4 t ADT: 75

FAS 1472 (CH 31)

Good

Over: HICKORY CREEK

2.8 MI NE HUDSON, McLean, IL

Built 2000 Load: 32.4 t ADT: 1,000

FAS 1472 CH 31

Good

Over: HICKORY CREEK

3.0 MI NE HUDSON, McLean, IL

Built 2012 Load: 32.4 t ADT: 675

FAS 349 CH 13

Good

Over: HENLINE DITCH

2.0 MI N COLFAX, McLean, IL

Built 1992 Load: 32.4 t ADT: 825

TR 155

Good

Over: MACKINAW RIVER

3.5 MI W COLFAX, McLean, IL

Built 2010 Load: 32.4 t ADT: 25

TR-59

Good

Over: Trib Indian CR

7.4 mi NNE Colfax, McLean, IL

Built 2014 Load: 32.4 t ADT: 50

TR 470

Good

Over: MACKINAW RIVER

2.0MI SE PLEASANTHIL, McLean, IL

Built 1981 Load: 32.4 t ADT: 50

TR 434

Good

Over: PATTON CR

0.5MI S PLEASANTHILL, McLean, IL

Built 1983 Load: 32.4 t ADT: 25

TR 472

Good

Over: PATTON CR

4.0 MI E LEXINGTON, McLean, IL

Built 1990 Load: 32.4 t ADT: 75

TR 442

Good

Over: TURKEY CREEK

1.5 MI EN LEXINGTON, McLean, IL

Built 1999 Load: 32.4 t ADT: 25

TR 434

Good

Over: LITTLE CROOKED CR

2650E, 2125N, McLean, IL

Built 2005 Load: 32.4 t ADT: 50

TR 109

Good

Over: PATTONS CREEK

0.2 M E PLEASANTHILL, McLean, IL

Built 2008 Load: 32.4 t ADT: 50

FAS 489 CH 21

Good

Over: LITTLE CROOKED CREEK

1.5MI SW PLEASANTHIL, McLean, IL

Built 2011 Load: 32.4 t ADT: 800

FAS-473 (CH-8)

Good

Over: Patton's Creek

4.0 mi E of Lexingto, McLean, IL

Built 2017 Load: 32.4 t ADT: 475

TR 203

Good

Over: TRIBUTARY MACKINAW R

4.8 MI WSW COLFAX, McLean, IL

Built 1981 Load: 32.4 t ADT: 75

TR 203

Good

Over: TRIBUTARY MACKINAW R

1.8 MI SW COLFAX, McLean, IL

Built 1983 Load: 32.4 t ADT: 100

TR 514

Good

Over: TRIBUTARY MACKINAW R

2.2 MI SW COLFAX, McLean, IL

Built 1984 Load: 32.4 t ADT: 25

TR 514

Good

Over: TRIBUTARY MACKINAW R

3.2 MI SW COLFAX, McLean, IL

Built 1984 Load: 32.4 t ADT: 25

TR 221A

Good

Over: BR MACKINA RIVER

2.0 MI S COLFAX, McLean, IL

Built 1990 Load: 32.4 t ADT: 25

TR 546

Good

Over: BR MACINAW RIVER

1.5 MI SE COLFAX, McLean, IL

Built 1989 Load: 32.4 t ADT: 75

TR 221 A

Good

Over: BR MACKINAW RIVER

3.0 MI SW COLFAX, McLean, IL

Built 1993 Load: 32.4 t ADT: 50

TR 540

Good

Over: BR MACINAW R

1.5 MI S COLFAX, McLean, IL

Built 2000 Load: 32.4 t ADT: 50

TR 540

Good

Over: BR MACKINAW RIVER

2 MI S OF COLFAX, McLean, IL

Built 2000 Load: 32.4 t ADT: 50

TR 221A

Good

Over: BR MACKINAW RIVER

2 MI SSE COLFAX, McLean, IL

Built 2004 Load: 32.4 t ADT: 25

TR 239A

Good

Over: BR MACKINAW RIVER

4.5 MI SE COLFAX, McLean, IL

Built 2009 Load: 32.4 t ADT: 50

TR 239

Good

Over: TRIB TO MACKINAW R

3.0 MI S COLFAX, McLean, IL

Built 2013 Load: 32.4 t ADT: 50

TR 221A

Good

Over: BR Mackinaw R

3.8 MI SW Colfax, McLean, IL

Built 2014 Load: 32.4 t ADT: 50

TR-239A

Good

Over: Br. Mackinaw River

5.5 mi SSW Colfax, McLean, IL

Built 2017 Load: 32.4 t ADT: 50

TR 47

Good

Over: BUCK CREEK

1.0 MI NW CLARKSVILL, McLean, IL

Built 1994 Load: 32.4 t ADT: 50

CH 36

Good

Over: SUGAR CREEK

3.5 MI N MCLEAN, McLean, IL

Built 1987 Load: 32.4 t ADT: 175

TR 481

Good

Over: BRANCK SUGAR CREEK

5.5 MI NW MCLEAN, McLean, IL

Built 1990 Load: 32.4 t ADT: 50

TR 10

Good

Over: BR MD Fork Sugar CR

5.5 mi NW of McLean, McLean, IL

Built 2016 Load: 32.4 t ADT: 125

TR 181A

Good

Over: SIX MILE CREEK

1.7 MI W TOWANDA, McLean, IL

Built 1989 Load: 32.4 t ADT: 100

TR 345

Good

Over: BR KICKAPOO CREEK

3.8 MI NE DOWNS, McLean, IL

Built 1981 Load: 32.4 t ADT: 25

FAU 6370 CH 28

Good

Over: KICKAPOO CREEK

4.0 MI N DOWNS, McLean, IL

Built 1987 Load: 32.4 t ADT: 1,750

TR 299

Good

Over: KICKAPOO CREEK TRIB

5.5 MI NNE DOWNS, McLean, IL

Built 1987 Load: 32.4 t ADT: 175

TR 299

Good

Over: BR KICKAPOO CREEK

5.0 MI N DOWNS, McLean, IL

Built 1988 Load: 32.4 t ADT: 175

TR299

Good

Over: BR KICKAPOO CREEK

5.0 MI N DOWNS, McLean, IL

Built 1997 Load: 32.4 t ADT: 175

TR 342

Good

Over: BR KICKAPOO CREEK

4.5 MI N DOWNS, McLean, IL

Built 2005 Load: 32.4 t ADT: 50

TR 278

Good

Over: KICKAPOO CREEK

3.2 MI NE HEYWORTH, McLean, IL

Built 1978 Load: 32.4 t ADT: 200

TR 212

Good

Over: SHORT POINT CR

1.5 MI SW HEYWORTH, McLean, IL

Built 1980 Load: 32.4 t ADT: 100

TR 258

Good

Over: BURLISON CREEK

1.0 MI NE HEYWORTH, McLean, IL

Built 1982 Load: 32.4 t ADT: 250

TR 168

Good

Over: BRANCH TIMBER CR

5.2 MI NNW HEYWORTH, McLean, IL

Built 1985 Load: 32.4 t ADT: 75

TR 527A

Good

Over: MUD CREEK

2.0 MI NW HEYWORTH, McLean, IL

Built 1990 Load: 32.4 t ADT: 75

Showing 19,501-19,550 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.