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

CHERRY RD

Good

Over: EAST AUX SABLE CREEK

.5 M SW PLAINF'LD RD, Kendall, IL

Built 1987 Load: 32.4 t ADT: 175

MS 0055 MEADOW LN

Good

Over: STREAM

170' E FOX RIVER DR, Kendall, IL

Built 1988 Load: 32.4 t ADT: 25

TR 125 BELL RD

Good

Over: BR OF AUX SABLE CR

BELL RD 1 MI W RIDGE, Kendall, IL

Built 1988 Load: 32.4 t ADT: 425

WILDY ROAD

Good

Over: AUX SABLE CREEK

1.5 MI W OF RIDGE RD, Kendall, IL

Built 1989 Load: 32.4 t ADT: 75

PENMAN RD.

Good

Over: WEST AUX SABLE CK

.2N OF WALKER RD, Kendall, IL

Built 1992 Load: 32.4 t ADT: 25

CHURCH RD/MS0015

Good

Over: W. AUX SABLE CREEK

CHURCHRD1/4MSCHICAGR, Kendall, IL

Built 1993 Load: 32.4 t ADT: 150

WHEELER RD

Good

Over: BR.E.AUX SABLE

1MI S-ILL 126, Kendall, IL

Built 1995 Load: 32.4 t ADT: 125

BR E AUX SABLE CRE

Good

Over: O'BRIEN RD

2MI S-US 52, Kendall, IL

Built 1995 Load: 32.4 t ADT: 775

WILLOW LANE

Good

Over: BLACKBERRY CREEK

.1 MI N OF GALENA RD, Kendall, IL

Built 1996 Load: 32.4 t ADT: 675

O'BRIEN RD

Good

Over: AUX SABLE CREEK

2.5 MILE S OF US 52, Kendall, IL

Built 1996 Load: 32.4 t ADT: 775

TR 58 WALKERRD

Good

Over: TRIB E AUX SABLE CRK

BY SCHLAPP RD, Kendall, IL

Built 1997 Load: 32.4 t ADT: 550

O'BRIEN RD

Good

Over: AUX SABLE CK

1.5 Mi. S. of RTE.52, Kendall, IL

Built 1998 Load: 32.4 t ADT: 775

MILLER RD

Good

Over: E B LITTLE ROCK CK

.5 MI W LITTLE ROCK, Kendall, IL

Built 1997 Load: 32.4 t ADT: 300

GRISWOLD SPRINGS R

Good

Over: LITTLE ROCK CREEK

.5 MI E SANDWICH, Kendall, IL

Built 1999 Load: 32.4 t ADT: 2,550

CHURCH RD/MS0015

Good

Over: W AUX SABLE CREEK

6 MI NE LISBON, Kendall, IL

Built 1999 Load: 32.4 t ADT: 75

TR 86 ASHLEY RD

Good

Over: AUX SABLE CREEK

0.15 MI N OF US 52, Kendall, IL

Built 2001 Load: 32.4 t ADT: 325

ASHLEY RD

Good

Over: W AUX SABLE CR

0.3 MI S OF ILL 52, Kendall, IL

Built 2004 Load: 32.4 t ADT: 350

FAU1555/BRISTOL RI

Good

Over: BLACKBERRY CREEK

.25 MI NW KENNEDY RD, Kendall, IL

Built 2003 Load: 32.4 t ADT: 1,450

FAS-276 Fox Rv. Dr

Good

Over: Trib. Hollenback Cr.

0.037M S Meadow Lane, Kendall, IL

Built 2004 Load: 32.4 t ADT: 2,600

IMMANUEL RD, TR 74

Good

Over: AUX SABLE CREEK

.5 MI N OF WALKER, Kendall, IL

Built 2004 Load: 32.4 t ADT: 75

TR 93 HELMAR RD

Good

Over: BR WEST AUX SABLE CR

0.2 MI W OF RTE 47, Kendall, IL

Built 2007 Load: 32.4 t ADT: 175

Fern Dell Road

Good

Over: BR Roods Creek

0.1 mile W Fennel Rd, Kendall, IL

Built 2013 Load: 32.4 t ADT: 50

TR 111 CHICAGO ROA

Good

Over: W.AUX SABLE CREEK TR

T35N R7E SEC.10, Kendall, IL

Built 2015 Load: 32.4 t ADT: 25

ADAMS ST

Good

Over: WAUBANSEE CREEK

0.14 MI N IL RTE 34, Kendall, IL

Built 1997 Load: 32.4 t ADT: 1,450

OLD POST ROAD

Good

Over: WAUBANSEE CREEK

.3 W OF DOUGLAS RD., Kendall, IL

Built 1994 Load: 32.4 t ADT: 2,850

BARNABY DRIVE

Good

Over: WAUBANSEE CREEK

.1 W OF DOUGLAS RD, Kendall, IL

Built 1993 Load: 32.4 t ADT: 250

PEARCES FORD

Good

Over: WAUBANSEE CREEK

0.5 N IL RT. 34, Kendall, IL

Built 1994 Load: 32.4 t ADT: 900

DOUGLAS RD

Good

Over: WAUBANSEE CR

.69 M N US 34, Kendall, IL

Built 2008 Load: 32.4 t ADT: 16,500

RIVER ROAD(FAU 379

Good

Over: BLACKBERRY CREEK

0.20 Mil W ILL 47, Kendall, IL

Built 2013 Load: 32.4 t ADT: 5,150

CONCORD DRIVE

Good

Over: BLACKBERRY CREEK

0.2 mi NW Galena Rd, Kendall, IL

Built 2002 Load: 32.4 t ADT: 4,300

HENDERSON ST

Good

Over: CEDAR CR DR DIT

1 BLK S MAIN ST, Knox, IL

Built 1900 Load: 32.4 t ADT: 4,450

TR 260

Good

Over: HICKORY CR

SW-7-T9NR4E, Knox, IL

Built 1977 Load: 32.4 t ADT: 75

TR 32

Good

Over: HENDERSON CREEK

SE-32-T13NR1E, Knox, IL

Built 1979 Load: 32.4 t ADT: 75

TR 195B

Good

Over: MIDDLE CREEK

SE-13-T11NR2E, Knox, IL

Built 1980 Load: 32.4 t ADT: 50

TR 289

Good

Over: TRIB TO FRENCH CREEK

SE-28-T10NR4E, Knox, IL

Built 1980 Load: 32.4 t ADT: 25

TR 79

Good

Over: FOREMAN CREEK

W.CTR-3-T12NR3E, Knox, IL

Built 1978 Load: 32.4 t ADT: 10

TR 79

Good

Over: TRIB TO FOREMAN CR

E1/2-3-T12NR3E, Knox, IL

Built 1980 Load: 32.4 t ADT: 10

TR 261

Good

Over: HAW CREEK

CTR-13-T10NR2E, Knox, IL

Built 1978 Load: 32.4 t ADT: 50

TR 56

Good

Over: POPE CREEK

SW-2-T13NR1E, Knox, IL

Built 1980 Load: 32.4 t ADT: 50

TR 2 CO LINE ROAD

Good

Over: TRIB TO INDIAN CREEK

SW-7-T9NR1E, Knox, IL

Built 1980 Load: 32.4 t ADT: 50

TR 279

Good

Over: PIG CREEK

S.CTR-28-T10NR2E, Knox, IL

Built 1982 Load: 32.4 t ADT: 50

TR 98

Good

Over: HAW CREEK

NW-31-T11NR2E, Knox, IL

Built 1982 Load: 32.4 t ADT: 175

TR 260

Good

Over: FRENCH CREEK

SE-36-T10NR3E, Knox, IL

Built 1982 Load: 32.4 t ADT: 25

TR 259

Good

Over: BRUSH CREEK

SW-24-T10NR1E, Knox, IL

Built 1983 Load: 32.4 t ADT: 50

TR 254

Good

Over: MUD RUN CREEK

NE-14-T13NR3E, Knox, IL

Built 1983 Load: 32.4 t ADT: 25

TR 172

Good

Over: LITTLERS CREEK

S1/2-25-T9NR2E, Knox, IL

Built 1988 Load: 32.4 t ADT: 50

TR 6

Good

Over: STREAM

NW-18-T11N,R1E, Knox, IL

Built 1983 Load: 32.4 t ADT: 75

TR 187

Good

Over: SUGAR CR

NE-14-T11N,R3E, Knox, IL

Built 1983 Load: 32.4 t ADT: 25

TR 112

Good

Over: MIDDLE CREEK

NE-5-T11NR2E, Knox, IL

Built 1984 Load: 32.4 t ADT: 75

TR 130

Good

Over: HAW CREEK

S.CTR-15-T10NR2E, Knox, IL

Built 1985 Load: 32.4 t ADT: 75

Showing 18,401-18,450 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.