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-199

Good

Over: BONPAS CREEK

2 MI ENE CALHOUN, Richland, IL

Built 1992 Load: 32.4 t ADT: 25

TR-40

Good

Over: JESSE CREEK

1 MI E PASSPORT, Richland, IL

Built 1993 Load: 32.4 t ADT: 50

TR-257

Good

Over: HOG RUN

1.75 MI NW WYNOOSE, Richland, IL

Built 1994 Load: 32.4 t ADT: 50

TR-223

Good

Over: TRIB BONPAS CREEK

1 MI E CALHOON, Richland, IL

Built 1993 Load: 32.4 t ADT: 20

CH-7

Good

Over: BONPAS CREEK

3.25 MI NW BERRYVILL, Richland, IL

Built 1993 Load: 32.4 t ADT: 50

TR-11

Good

Over: FOX RIVER

1.5 MI NW DUNDAS, Richland, IL

Built 1994 Load: 32.4 t ADT: 25

TR-14

Good

Over: TRIB SUGAR CREEK

2.5 MI NW NOBLE, Richland, IL

Built 1994 Load: 32.4 t ADT: 125

TR201

Good

Over: RUN CREEK

2.25 MI S NOBLE, Richland, IL

Built 1996 Load: 32.4 t ADT: 50

TR60

Good

Over: UNKNOWN

2 MI E NOBLE, Richland, IL

Built 1996 Load: 32.4 t ADT: 35

FAS 706(CH 9)

Good

Over: CREEK

1 MI N WYNOOSE, Richland, IL

Built 1996 Load: 32.4 t ADT: 300

FAS 2805

Good

Over: FOX RIVER

2 MI N OLNEY, Richland, IL

Built 1998 Load: 32.4 t ADT: 125

TR 268

Good

Over: STREAM

3 MI SE CLAREMONT, Richland, IL

Built 1997 Load: 32.4 t ADT: 100

TR 261

Good

Over: BONPASS CREEK

6 MIE&1MI N PARKBRG, Richland, IL

Built 2000 Load: 32.4 t ADT: 25

TR 265

Good

Over: STREAM

0.5 MI N WYNOOSE, Richland, IL

Built 2011 Load: 32.4 t ADT: 25

TR 215

Good

Over: BROWN CREEK

2.75 MI S NOBLE, Richland, IL

Built 2003 Load: 32.4 t ADT: 25

TR 57

Good

Over: SUGAR CREEK

1 MI E PASSPORT, Richland, IL

Built 2000 Load: 32.4 t ADT: 50

TR 96A

Good

Over: GENTRY CREEK

3.5 MI NW OF PARKBRG, Richland, IL

Built 2002 Load: 32.4 t ADT: 20

TR 157A

Good

Over: SUGAR CREEK

3.5 MI E NOBLE, Richland, IL

Built 2003 Load: 32.4 t ADT: 100

FAS 803

Good

Over: CREEK

3 MI NW BERRYVLE, Richland, IL

Built 2000 Load: 32.4 t ADT: 200

FAS 803

Good

Over: CREEK

2.25 MI NW BERRYVILE, Richland, IL

Built 1998 Load: 32.4 t ADT: 125

FAS 706

Good

Over: SUGAR CREEK

1 MI S PASSPORT, Richland, IL

Built 2001 Load: 32.4 t ADT: 375

CH 1

Good

Over: THE SLOUGH

3 MI E STRINGTOWN, Richland, IL

Built 2003 Load: 32.4 t ADT: 100

FAS-801

Good

Over: FOX RIVER

1.5 MI W DUNDAS, Richland, IL

Built 2006 Load: 32.4 t ADT: 725

TR 47

Good

Over: CALFKILLER CREEK

2 MI SW STRINGTOWN, Richland, IL

Built 2006 Load: 32.4 t ADT: 100

CH 8

Good

Over: DREDGE DITCH

2.25 MI W SCHNELL, Richland, IL

Built 2008 Load: 32.4 t ADT: 75

TR 3

Good

Over: TRIB TO HURRICANE CR

2.5 MI E OF WAKEFIEL, Richland, IL

Built 2008 Load: 32.4 t ADT: 35

FAS 2803

Good

Over: BONPAS CREEK

2.5 MI E OF CALHOUN, Richland, IL

Built 2008 Load: 32.4 t ADT: 50

TR 136

Good

Over: GENTRY CREEK

1.5 MI NW PARKERSBUR, Richland, IL

Built 2008 Load: 32.4 t ADT: 50

TR 177

Good

Over: SUGAR CREEK

3 MI SE OLNEY, Richland, IL

Built 2011 Load: 32.4 t ADT: 75

FAS 1722/CH 11

Good

Over: TRIB TO SUGAR CREEK

3.0 MI E NOBLE, Richland, IL

Built 2013 Load: 32.4 t ADT: 225

TR-101

Good

Over: Bugaboo Creek

1.75 Mi SE Amity, Richland, IL

Built 2013 Load: 32.4 t ADT: 50

TR 152

Good

Over: Jack Oak Creek

1.5 Mi. South Dundas, Richland, IL

Built 2014 Load: 32.4 t ADT: 50

TR 220

Good

Over: Douglas Creek

1 Mi. N Stringtown, Richland, IL

Built 2015 Load: 32.4 t ADT: 25

TR-84

Good

Over: Coon Creek

3.5 Mi. W Dundas, Richland, IL

Built 2017 Load: 32.4 t ADT: 50

TR-5

Good

Over: Parker Creek

1.0 Mi. SW Parkersbu, Richland, IL

Built 2018 Load: 32.4 t ADT: 50

TR 215

Good

Over: Hog Run Creek

3.0 Mi. S of Noble, Richland, IL

Built 2019 Load: 32.4 t ADT: 75

TR 119

Good

Over: Sugar Creek

3.0 Mi. NE Noble, Richland, IL

Built 2021 Load: 32.4 t ADT: 50

TR-157A

Good

Over: TRIB SUGAR CREEK

2.5 MI SW OLNEY, Richland, IL

Built 1987 Load: 32.4 t ADT: 75

TR-189

Good

Over: HOG RUN CREEK

1.25 MI SSW NOBLE, Richland, IL

Built 1992 Load: 32.4 t ADT: 50

FAS 706

Good

Over: Creek

0.8 Mi. N. Wynoose, Richland, IL

Built 2015 Load: 32.4 t ADT: 250

LINCOLN AVE

Good

Over: BONPAS CREEK

CLAREMONT, Richland, IL

Built 1997 Load: 32.4 t ADT: 200

24TH ST ROCK ISLAN

Good

Over: STREAM

.2 MI N OF ILL 5, Rock Island, IL

Built 1933 Load: 32.4 t ADT: 7,700

24TH ST ROCK ISLAN

Good

Over: STREAM

.1MI N OF ILL 5, Rock Island, IL

Built 1934 Load: 32.4 t ADT: 7,700

MOLINE ROAD

Good

Over: STREAM

3.5 MI SW HILLSDALE, Rock Island, IL

Built 2004 Load: 32.4 t ADT: 675

IL 92

Good

Over: DRAINAGE

.03 MI E 80TH AVE W, Rock Island, IL

Built 2014 Load: 32.4 t ADT: 1,450

US 150

Good

Over: STREAM

E. EDGE COAL VALLEY, Rock Island, IL

Built 1996 Load: 32.4 t ADT: 6,000

ILL RT 92

Good

Over: DRAINAGE DITCH

E EDGE ANDALUSIA, Rock Island, IL

Built 2006 Load: 32.4 t ADT: 4,450

43RD AVE

Good

Over: STREAM

.4MI E 7TH ST-MOLINE, Rock Island, IL

Built 1988 Load: 32.4 t ADT: 1,100

IL 84 & 92

Good

Over: HONEY CREEK

WEST EDGE OF SILVIS, Rock Island, IL

Built 2000 Load: 32.4 t ADT: 9,850

OLD IL 92

Good

Over: DRAINAGE DITCH

1.3 MI. W. OF I-88, Rock Island, IL

Built 1999 Load: 32.4 t ADT: 650

Showing 20,351-20,400 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.