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 27

Fair

Over: BUSH CREEK

3.5 MI NE NEOGA, Cumberland, IL

Built 1980 Load: 32.4 t ADT: 50

TR 82

Fair

Over: SPRING POINT CREEK

4.5 MI W JEWETT, Cumberland, IL

Built 1979 Load: 32.4 t ADT: 100

TR 31

Fair

Over: DICKS CREEK

SE CORNER JOHNSTOWN, Cumberland, IL

Built 1982 Load: 32.4 t ADT: 100

TR 187

Fair

Over: RANGE CREEK

3.0 MI SE GREENUP, Cumberland, IL

Built 1980 Load: 32.4 t ADT: 50

TR 64

Fair

Over: MULE CREEK

2.5 MI NE ROSLYN, Cumberland, IL

Built 1980 Load: 32.4 t ADT: 75

TR 203

Fair

Over: SPRING POINT CREEK

2.8 MI NW MONTROSE, Cumberland, IL

Built 1983 Load: 32.4 t ADT: 150

TR 53

Fair

Over: RANGE CREEK

3.4 MI E UNION CTR, Cumberland, IL

Built 1986 Load: 32.4 t ADT: 50

FAP 71 (IL 10,IL 5

Fair

Over: COON CREEK

SE EDGE OF CLINTON, De Witt, IL

Built 1994 Load: 32.4 t ADT: 8,100

FAP 71(IL 54)

Fair

Over: COON CREEK

SE EDGE OF CLINTON, De Witt, IL

Built 1994 Load: 32.4 t ADT: 5,050

CRESTVIEW ST (1010

Fair

Over: TEN MILE CREEK

CITY OF CLINTON, De Witt, IL

Built 1977 Load: 32.4 t ADT: 75

CH 14 (FAS 1489)

Fair

Over: IPC DISCHARGE FLUME

1 MI S OF DEWITT, De Witt, IL

Built 1979 Load: 32.4 t ADT: 300

TR 119

Fair

Over: CLINTON LAKE

1 MI NE OF BIRKBECK, De Witt, IL

Built 1978 Load: 32.4 t ADT: 275

TR 92

Fair

Over: LONG POINT CREEK

3.0 MI NW WAPELLA, De Witt, IL

Built 1978 Load: 32.4 t ADT: 50

TR 106

Fair

Over: TEN MILE CREEK

W EDGE CLINTON, De Witt, IL

Built 1979 Load: 32.4 t

TR 12

Fair

Over: SALT CREEK

2.5 MI NW KENNEY, De Witt, IL

Built 1979 Load: 32.4 t ADT: 75

TR 262

Fair

Over: SALT CREEK

SW EDGE FARMER CITY, De Witt, IL

Built 1980 Load: 32.4 t ADT: 250

TR 212

Fair

Over: STREAM

4 MI N OF DEWITT, De Witt, IL

Built 1980 Load: 32.4 t ADT: 75

TR 68

Fair

Over: STREAM

7 MI SE WAYNESVILLE, De Witt, IL

Built 1980 Load: 32.4 t ADT: 50

TR 233

Fair

Over: FRIENDS CREEK

3.5 MI SW WELDON, De Witt, IL

Built 1981 Load: 32.4 t ADT: 25

TR 175

Fair

Over: DRAINAGE DITCH

3 MI SE OF DEWITT, De Witt, IL

Built 1999 Load: 32.4 t ADT: 25

WOODLAWN ST(FAU 73

Fair

Over: TEN MILE CREEK

CITY OF CLINTON, De Witt, IL

Built 1963 Load: 32.4 t ADT: 125

CHICAGO RD

Fair

Over: SOMONAUK CREEK

550N 1405E, DeKalb, IL

Built 1946 Load: 32.4 t ADT: 1,550

SUYDAM RD

Fair

Over: SOMONAUK CREEK

145N 1565E, DeKalb, IL

Built 1955 Load: 32.4 t ADT: 1,950

SOMONAUK ROAD

Fair

Over: BR LITTLE ROCK CREEK

625N 1550E, DeKalb, IL

Built 1976 Load: 32.4 t ADT: 3,000

SOMONAUK ROAD

Fair

Over: W. BR. BIG ROCK CRK.

1150N 1510E, DeKalb, IL

Built 1993 Load: 32.4 t ADT: 2,400

GENOA ROAD

Fair

Over: DEER CREEK

3315N 1170E, DeKalb, IL

Built 1998 Load: 32.4 t ADT: 3,000

SHABBONA ROAD

Fair

Over: BIG INDIAN CREEK

820N 350E, DeKalb, IL

Built 2000 Load: 32.4 t ADT: 800

MALTA ROAD

Fair

Over: BR. OF OWENS CREEK

2675N 350E, DeKalb, IL

Built 2001 Load: 32.4 t ADT: 300

CHERRY VALLEY RD

Fair

Over: KINGSBURY CREEK

3560N 430E, DeKalb, IL

Built 2008 Load: 32.4 t ADT: 2,950

PERRY ROAD

Fair

Over: S BR KISHWAUKEE RV

1500N 630E, DeKalb, IL

Built 2009 Load: 32.4 t ADT: 1,800

SHABBONA RD

Fair

Over: BR INDIAN CRK

495N 300E, DeKalb, IL

Built 2009 Load: 32.4 t ADT: 475

SUYDAM RD

Fair

Over: LITTLE INDIAN CREEK

200N 615E, DeKalb, IL

Built 2007 Load: 32.4 t ADT: 425

PERRY RD

Fair

Over: YOUNG'S CREEK

1500N 1745E, DeKalb, IL

Built 2010 Load: 32.4 t ADT: 2,150

BASE LINE RD

Fair

Over: OWEN CREEK

3000N 365E, DeKalb, IL

Built 1966 Load: 32.4 t ADT: 300

COUNTY LINE ROAD

Fair

Over: BR S BR KISHWAUKEE R

3440N 030E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 150

PLEASANT HILL ROAD

Fair

Over: S BR KISHWAUKEE RV

3275N 1100E, DeKalb, IL

Built 1977 Load: 32.4 t ADT: 1,100

BASE LINE RD

Fair

Over: LEE SLOUGH CREEK

3000N, 885E, DeKalb, IL

Built 1997 Load: 32.4 t ADT: 1,100

COUNTY LINE ROAD

Fair

Over: BR OF COON CREEK

3550N 1900E, DeKalb, IL

Built 1980 Load: 32.4 t ADT: 500

SCHAFER RD

Fair

Over: OWENS CREEK

2750N 425E, DeKalb, IL

Built 1970 Load: 32.4 t ADT: 50

W. CLARE ROAD

Fair

Over: BRANCH OWENS CREEK

2650N 510E, DeKalb, IL

Built 1990 Load: 32.4 t ADT: 25

PEACE RD

Fair

Over: BR KISHWAUKEE RIVER

2545N 1235E, DeKalb, IL

Built 1995 Load: 32.4 t ADT: 15,000

PEACE RD

Fair

Over: BR KISHWAUKEE RIVER

2610N , 1265E, DeKalb, IL

Built 1996 Load: 32.4 t ADT: 12,800

PEACE ROAD

Fair

Over: UNION PACIFIC RR

0.3 M N OF IL RT 38, DeKalb, IL

Built 1985 Load: 32.4 t ADT: 7,600

GURLER RD. (FAS111

Fair

Over: BR S BR KISHWAUKEE R

1800N 850E, DeKalb, IL

Built 1992 Load: 32.4 t ADT: 450

PLEASANT STREET

Fair

Over: UNION DRAINAGE DITCH

2060N 1645E, DeKalb, IL

Built 1975 Load: 32.4 t ADT: 500

BETHANY ROAD

Fair

Over: E BR KISHWAUKEE RV

2280N 1590E, DeKalb, IL

Built 1982 Load: 32.4 t ADT: 425

WATERMAN ROAD

Fair

Over: BR S BR KISHWAUKEE R

1675N 900E, DeKalb, IL

Built 1979 Load: 32.4 t ADT: 25

HAUMESSER RD

Fair

Over: S BR KISHWAUKEE RIVE

1165N 350E, DeKalb, IL

Built 1986 Load: 32.4 t ADT: 25

HOWISON RD

Fair

Over: SOMONAUK CREEK

705N 1200E, DeKalb, IL

Built 1967 Load: 32.4 t ADT: 275

UNIVERSITY ROAD

Fair

Over: LITTLE INDIAN CREEK

800N 700E, DeKalb, IL

Built 1978 Load: 32.4 t ADT: 75

Showing 7,801-7,850 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.