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 166 B

Fair

Over: DRAINAGE DITCH

E 10TH RD, N 590, LaSalle, IL

Built 1991 Load: 32.4 t ADT: 25

TR467

Fair

Over: STREAM

N. 20th E. 1038, LaSalle, IL

Built 1990 Load: 32.4 t ADT: 75

CH 10

Fair

Over: SUTPHENS RUN

E.7TH, N.4510, LaSalle, IL

Built 1991 Load: 32.4 t ADT: 275

TR 244

Fair

Over: STREAM

E.14TH N2915, LaSalle, IL

Built 1994 Load: 32.4 t ADT: 275

TR99

Fair

Over: SOMONAUK CREEK

N4250th E2610, LaSalle, IL

Built 1995 Load: 32.4 t ADT: 75

TR 454C

Fair

Over: HOG RUN CREEK

.22 M S OF FAS 272, LaSalle, IL

Built 1996 Load: 32.4 t ADT: 50

TR 211B

Fair

Over: BR OF BUCK CREEK

N35TH, E1675, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 275

TR 238

Fair

Over: CROOKED LEG CRK

N. 4135 E 14TH RD, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 200

TR 173

Fair

Over: UNNAMED STREAM

N3853, E2680, LaSalle, IL

Built 1997 Load: 32.4 t ADT: 125

TR 205A

Fair

Over: CROOKED LEG CREEK

N 36TH, E 1915, LaSalle, IL

Built 1998 Load: 32.4 t ADT: 100

TR 320

Fair

Over: CROOKED LEG CREEK

E 18TH AT N3605, LaSalle, IL

Built 2000 Load: 32.4 t ADT: 175

TR 277

Fair

Over: UNNAMED STREAM

JUST E OF E1888TH RD, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 200

TR 257

Fair

Over: PECUMSAUGEN CREEK

N3150, E785, LaSalle, IL

Built 2000 Load: 32.4 t ADT: 125

FAS 272

Fair

Over: HOG RUN

N21, E 2915, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 950

TR 156

Fair

Over: PECUMSAUGEN CREEK

E9TH, N3215, LaSalle, IL

Built 2001 Load: 32.4 t ADT: 100

TR 205

Fair

Over: CROOKED LEG CREEK

N36 RD, E1760, LaSalle, IL

Built 2002 Load: 32.4 t ADT: 150

E 25TH RD

Fair

Over: UNNAMED CREEK

E 25 N3750, LaSalle, IL

Built 2003 Load: 32.4 t ADT: 100

FAS 273 (CH 5)

Fair

Over: WAUPECAN CREEK

N 17TH, E 2965, LaSalle, IL

Built 2002 Load: 32.4 t ADT: 525

TR 240

Fair

Over: EGG BAG CREEK

E 14TH N 1410, LaSalle, IL

Built 2008 Load: 32.4 t ADT: 100

FAS259 CH3

Fair

Over: STREAM

E 2653,N 3725, LaSalle, IL

Built 1973 Load: 32.4 t ADT: 1,350

MS 2360 CLARK ST

Fair

Over: LONG CREEK

CLARK ST, LaSalle, IL

Built 1986 Load: 32.4 t ADT: 300

Monroe Street

Fair

Over: Coal Run Creek

R3E, T21N, 3rd. PMMd, LaSalle, IL

Built 1990 Load: 32.4 t ADT: 125

SHABBONA STREET

Fair

Over: PRAIRIE CREEK

SO OF 1ST STREET, LaSalle, IL

Built 1983 Load: 32.4 t ADT: 775

FAP-327/FR-1866

Fair

Over: ALLISON DITCH NO 2

.5 MI W LAKE LAW INT, Lawrence, IL

Built 1960 Load: 32.4 t ADT: 200

FAS-1808 (SBI-12)

Fair

Over: CSXT RR

E OF LAWRENCEVILLE, Lawrence, IL

Built 1984 Load: 32.4 t ADT: 2,250

TR-227A

Fair

Over: ENGLAND DITCH

1.5 MI SW BILLET, Lawrence, IL

Built 1977 Load: 32.4 t ADT: 275

TR-92

Fair

Over: INDIAN CREEK

0.5 MI SW BRIDGEPORT, Lawrence, IL

Built 1978 Load: 32.4 t ADT: 100

TR-10B

Fair

Over: SUGAR CREEK

1.5 MI W HELENA, Lawrence, IL

Built 1978 Load: 32.4 t ADT: 25

TR-17

Fair

Over: CREEK

2 MI E BIRDS, Lawrence, IL

Built 1980 Load: 32.4 t ADT: 50

TR-171

Fair

Over: INDIAN CREEK

1.5 MI E BRIDGEPORT, Lawrence, IL

Built 1980 Load: 32.4 t ADT: 50

TR-70

Fair

Over: RACCOON CREEK

6 MI SSW BRIDGEPORT, Lawrence, IL

Built 1981 Load: 32.4 t ADT: 20

TR-2

Fair

Over: BUGABOO CREEK

2.5 MI NE SUMNER, Lawrence, IL

Built 1981 Load: 32.4 t ADT: 75

TR-16

Fair

Over: CRABAPPLE CREEK

2 MI S SUMNER, Lawrence, IL

Built 1982 Load: 32.4 t ADT: 50

TR-40

Fair

Over: MUDDY CREEK

1.75 MI N RED HIL SP, Lawrence, IL

Built 1982 Load: 32.4 t ADT: 50

TR-116

Fair

Over: RACCOON CREEK

7.5 MI S BRIDGEPORT, Lawrence, IL

Built 1982 Load: 32.4 t ADT: 35

TR-40

Fair

Over: THE SLOUGH

2 MI ESE CHAUNCEY, Lawrence, IL

Built 1984 Load: 32.4 t ADT: 50

TR-113

Fair

Over: EMBARRAS RIVER

2 MI E PETROLIA, Lawrence, IL

Built 1983 Load: 32.4 t ADT: 100

TR 231A

Fair

Over: ENGLAND DITCH

1 MI SW BILLET, Lawrence, IL

Built 1985 Load: 32.4 t ADT: 35

TR-213

Fair

Over: EMBARRAS RIVER

1.5 MI E BILLET, Lawrence, IL

Built 1990 Load: 32.4 t ADT: 125

FAS-807

Fair

Over: CRABAPPLE CREEK

S EDGE SUMNER, Lawrence, IL

Built 1993 Load: 32.4 t ADT: 1,400

TR 204B

Fair

Over: ENGLAND DITCH

2 MI N ST FRANVLE, Lawrence, IL

Built 1998 Load: 32.4 t ADT: 150

TR 18

Fair

Over: PAUL CREEK

4 MI S CHAUNCEY, Lawrence, IL

Built 2000 Load: 32.4 t ADT: 25

FAS 801-CH10

Fair

Over: BRANCH BRUSHY CREEK

2 MI E BIRDS, Lawrence, IL

Built 2002 Load: 32.4 t ADT: 450

TR 5

Fair

Over: DRAINAGE DITCH

1 MI NE BIRDS, Lawrence, IL

Built 2003 Load: 32.4 t ADT: 50

TR-54

Fair

Over: BRANCH RACCOON CREEK

3 MI SW BRIDGEPORT, Lawrence, IL

Built 1979 Load: 32.4 t ADT: 20

CH-23

Fair

Over: TRIB MUDDY CREEK

NE RED HILLS ST PK, Lawrence, IL

Built 1993 Load: 32.4 t ADT: 100

TR 217C (PRIVATE R

Fair

Over: CREEK

4.5 MI S. SUMNER, Lawrence, IL

Built 1938 Load: 32.4 t ADT: 10

ILL 251

Fair

Over: PIKE CREEK

2.34 MI N OF US 52, Lee, IL

Built 2010 Load: 32.4 t ADT: 1,600

ILL 26

Fair

Over: COON CREEK

3.2 MI S OF AMBOY RD, Lee, IL

Built 1981 Load: 32.4 t ADT: 1,500

ILL 26 & US 52

Fair

Over: PLUM HOLLOW CR

1.66 MI N JCT ILL 2, Lee, IL

Built 1967 Load: 32.4 t ADT: 4,300

Showing 8,551-8,600 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.