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

CH 22A

Fair

Over: BUREAU CREEK

1.5 M W LAMOILLE, Bureau, IL

Built 1977 Load: 32.4 t ADT: 25

TOWNSHIP ROAD 321

Fair

Over: COAL CREEK

0.7 M SW OF BUDA, Bureau, IL

Built 1984 Load: 32.4 t ADT: 75

TR 302

Fair

Over: BR OF MASTERS CREEK

5 MI N OF DOVER, Bureau, IL

Built 1981 Load: 32.4 t ADT: 25

FAS 251

Fair

Over: ADAMS CREEK

IN CHERRY, Bureau, IL

Built 1997 Load: 32.4 t ADT: 1,000

TOWNSHIP ROAD 270

Fair

Over: SENACHWINE CREEK

5 MI SE OF TISKILWA, Bureau, IL

Built 1984 Load: 32.4 t ADT: 75

TR 256-D

Fair

Over: BUREAU CREEK

2 MI E OF TISKILWA, Bureau, IL

Built 1986 Load: 32.4 t ADT: 350

TR 236

Fair

Over: BUREAU CREEK

E. EDGE OF TISKILWA, Bureau, IL

Built 1995 Load: 32.4 t ADT: 350

TR 252

Fair

Over: SENACHWINE CREEK

3 MI. SE OF TISKILWA, Bureau, IL

Built 1994 Load: 32.4 t ADT: 25

TOWNSHIP ROAD 312

Fair

Over: BUREAU CREEK

4.5 M N MALDEN, Bureau, IL

Built 1982 Load: 32.4 t ADT: 25

TR 139

Fair

Over: BR. W. BUREAU CREEK

6 MI N OF WYANET, Bureau, IL

Built 1980 Load: 32.4 t ADT: 125

TR 269

Fair

Over: POND CREEK

1 MI. N. OF BUDA, Bureau, IL

Built 1999 Load: 32.4 t ADT: 25

TOWNSHIP ROAD 280

Fair

Over: BUREAU CREEK

2 M NW DOVER, Bureau, IL

Built 1981 Load: 32.4 t ADT: 200

TOWNSHIP ROAD 109

Fair

Over: MASTERS CREEK

1 MI W OF GREEN OAK, Bureau, IL

Built 1979 Load: 32.4 t ADT: 125

TOWNSHIP ROAD 58

Fair

Over: GREEN RIVER

4 MI SE THOMAS, Bureau, IL

Built 1979 Load: 32.4 t ADT: 50

TOWNSHIP ROAD 52

Fair

Over: HICKORY SMITH DITCH

4.5 MI NE OF MINERAL, Bureau, IL

Built 1980 Load: 32.4 t ADT: 25

TR 36

Fair

Over: HICKORY SMITH DITCH

3 MI. NE. MINERAL, Bureau, IL

Built 1995 Load: 32.4 t ADT: 25

TR-73A

Fair

Over: Crooked Creek

3.5 MI E NEW BEDFORD, Bureau, IL

Built 1977 Load: 32.4 t ADT: 50

TOWNSHIP ROAD 1

Fair

Over: GREEN RIVER

5 MI. N. NEW BEDFORD, Bureau, IL

Built 1982 Load: 32.4 t ADT: 75

TR 116

Fair

Over: WALNUT DITCH

3 MI NE NEW BEDFORD, Bureau, IL

Built 1988 Load: 32.4 t ADT: 10

TR 229A

Fair

Over: ADAMS CREEK

1 MI NW OF LADD, Bureau, IL

Built 1983 Load: 32.4 t ADT: 25

TR 214

Fair

Over: PLOW HOLLOW BRANCH

1.5 MI S OF TISKILWA, Bureau, IL

Built 2007 Load: 32.4 t ADT: 150

TR 1

Fair

Over: NORTH BUREAU CREEK

3 MI NE VAN ORIN, Bureau, IL

Built 1975 Load: 32.4 t ADT: 75

TOWNSHIP ROAD 82A

Fair

Over: GREEN RIVER

4 MI NW MANLIUS, Bureau, IL

Built 1982 Load: 32.4 t ADT: 50

TOWNSHIP RD 2

Fair

Over: KING CREEK

4 MI NW NEPONSET, Bureau, IL

Built 1979 Load: 32.4 t ADT: 75

TOWNSHIP ROAD 60B

Fair

Over: COAL CREEK

1 MI NW OF SHEFFIELD, Bureau, IL

Built 1988 Load: 32.4 t ADT: 200

TOWNSHIP ROAD 97

Fair

Over: MASTERS CREEK

5 MI SE OF OHIO, Bureau, IL

Built 1980 Load: 32.4 t ADT: 25

TR 300

Fair

Over: MASTERS CREEK

6 MI SE OF OHIO, Bureau, IL

Built 1989 Load: 32.4 t ADT: 25

TR 290

Fair

Over: MASTERS CREEK

2 MI SE OF OHIO, Bureau, IL

Built 1998 Load: 32.4 t ADT: 75

TOWNSHIP ROAD 324

Fair

Over: BRUSH CREEK

1.5 M NW OF DEPUE, Bureau, IL

Built 1984 Load: 32.4 t ADT: 50

TR 155

Fair

Over: BRUSH CREEK

1.5 M S OF ARLINGTON, Bureau, IL

Built 1981 Load: 32.4 t ADT: 50

TOWNSHIP ROAD 363

Fair

Over: SENACHWINE CREEK

5.5 MI S OF TISKILWA, Bureau, IL

Built 1980 Load: 32.4 t ADT: 25

TR 224

Fair

Over: BR OF SENACHWINE CR

4.5 M NW WHITEFIELD, Bureau, IL

Built 1983 Load: 32.4 t ADT: 10

TOWNSHIP ROAD 277

Fair

Over: BRANCH OF POND CREEK

0.5 MI S OF WYANET, Bureau, IL

Built 1980 Load: 32.4 t ADT: 50

TR 223A

Fair

Over: W. BUREAU CREEK

1.5 MI N OF WYANET, Bureau, IL

Built 2004 Load: 32.4 t ADT: 50

TR 204

Fair

Over: W. BUREAU CREEK

2.5 MI SE OF WYANET, Bureau, IL

Built 1989 Load: 32.4 t ADT: 50

TR223A

Fair

Over: MAPLE GROVE CREEK

1.5 MI N OF WYANET, Bureau, IL

Built 2004 Load: 32.4 t ADT: 50

TR 277

Fair

Over: W BUREAU CRK

2 MI SE OF WYANET, Bureau, IL

Built 2002 Load: 32.4 t ADT: 75

TOWNSHIP ROAD 99

Fair

Over: BUREAU CREEK

4 MI S OF VAN ORIN, Bureau, IL

Built 1982 Load: 32.4 t ADT: 75

TR 345

Fair

Over: SILVER CREEK

6 MI SE OF BUDA, Bureau, IL

Built 1977 Load: 32.4 t ADT: 50

FAS 253/CH 10

Fair

Over: ILL & MISS CANAL

1 MI N OF MINERAL, Bureau, IL

Built 1983 Load: 32.4 t ADT: 250

TR 92

Fair

Over: ARNOLD CREEK

1 MI SOUTH OF BRUSSE, Calhoun, IL

Built 1978 Load: 32.4 t ADT: 225

TR 92

Fair

Over: METZ CREEKBRANCH

1 MI SOUTHOF BRUSSEL, Calhoun, IL

Built 1981 Load: 32.4 t ADT: 175

FAS 769

Fair

Over: MICHAEL HOLLOW CREEK

4.75M E HAMBURG, Calhoun, IL

Built 1984 Load: 32.4 t ADT: 350

TR 87A

Fair

Over: METZ CREEK

0.5 W. BRUSSELS, Calhoun, IL

Built 1991 Load: 32.4 t ADT: 250

TR 39

Fair

Over: IRISH HOLLOW CREEK

1 1/2 NE HAMBURG, Calhoun, IL

Built 1992 Load: 32.4 t ADT: 50

TR65

Fair

Over: TURNER CREEK

1310N 1480E, Calhoun, IL

Built 1993 Load: 32.4 t ADT: 50

TR105

Fair

Over: CREEK

270N 2200E, Calhoun, IL

Built 1994 Load: 32.4 t ADT: 100

BELLEVIEW RD

Fair

Over: BELLEVIEW HOLLOW CK

1.3MI E OF IL 96, Calhoun, IL

Built 1999 Load: 32.4 t ADT: 275

FAS 755

Fair

Over: INDIAN CREEK

2.7 MI S OF HAMBURG, Calhoun, IL

Built 2001 Load: 32.4 t ADT: 225

TR 15

Fair

Over: BRANCH E. PATHER CK.

1.25 MI N BELLVIEW, Calhoun, IL

Built 2000 Load: 32.4 t ADT: 50

Showing 7,251-7,300 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.