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

IL 9 (FAP 697)

Poor

Over: N FORK VERMILION RIV

2.5 MI E OF IL 1, Vermilion, IL

Built 1967 Load: 32.1 t ADT: 1,350

1500 E

Poor

Over: MCHENRY SLOUGH

3 MI N OF EPWORTH, White, IL

Built 2008 Load: 32.1 t ADT: 225

FAI 172 SB

Poor

Over: BURTON CREEK

1.4MI S I172/IL96, Adams, IL

Built 1980 Load: 32.4 t ADT: 4,875

FAS 1225/CH 12

Poor

Over: E BUREAU CREEK

2 MI W OF ARLINGTON, Bureau, IL

Built 1982 Load: 32.4 t ADT: 200

TR 284

Poor

Over: BUREAU CREEK

1.5 M NW OF DOVER, Bureau, IL

Built 1984 Load: 32.4 t ADT: 50

TR 27

Poor

Over: WEST PANTHER CREEK

1.1 MI EASTRTE 96, Calhoun, IL

Built 1983 Load: 32.4 t ADT: 50

ARGO FAY ROAD

Poor

Over: STREAM

1.3 MI E JCT ILL 84, Carroll, IL

Built 1937 Load: 32.4 t ADT: 2,350

BROOKVILLE RD

Poor

Over: ELKHORN CREEK

8.0 MI NW OF POLO, Carroll, IL

Built 1985 Load: 32.4 t ADT: 50

E MILLEDGEVILLE RT

Poor

Over: ELKHORN CREEK

E EDGE MILLEDGEVILLE, Carroll, IL

Built 1939 Load: 32.4 t ADT: 1,050

EAGLE POINT RD

Poor

Over: ELKHORN CREEK

2MI NE MILLEDGEVILLE, Carroll, IL

Built 1996 Load: 32.4 t ADT: 125

FAS 1535 (CH9)

Poor

Over: MID FK VERMILLION R

5.6 MI NW PENFIELD, Champaign, IL

Built 1984 Load: 32.4 t ADT: 150

TR 30 C

Poor

Over: STREAM

.5 MI S OF FOOSLAND, Champaign, IL

Built 1979 Load: 32.4 t ADT: 50

TR 550ICOBBLEFIELD

Poor

Over: COPPER SLOUGH

4 MI SW OF CHAMPAIGN, Champaign, IL

Built 1990 Load: 32.4 t ADT: 900

TR 130

Poor

Over: STREAM

5.2 MI NE FISHER, Champaign, IL

Built 1991 Load: 32.4 t ADT: 225

TR 35

Poor

Over: DRAINAGE DITCH

3 MI NW RANTOUL, Champaign, IL

Built 1997 Load: 32.4 t ADT: 75

FAP-813 (Olymp. Dr

Poor

Over: IC Railroad

0.9 Mi E of CH 21, Champaign, IL

Built 2016 Load: 32.4 t ADT: 2,300

TR 69C

Poor

Over: Spoon River

1.1 mi SE of Gifford, Champaign, IL

Built 2014 Load: 32.4 t ADT: 50

FAU 7155(DUNCAN RD

Poor

Over: COPPER SLOUGH

DUNCAN S OF SPRNGFLD, Champaign, IL

Built 1976 Load: 32.4 t ADT: 7,550

IL 29

Poor

Over: MAIN DRAINAGE DITCH

2.5M NW WASH ST BEND, Christian, IL

Built 1924 Load: 32.4 t ADT: 3,750

TR 18

Poor

Over: BEAR CREEK

3 MI E HARVEL, Christian, IL

Built 1978 Load: 32.4 t ADT: 20

TR 36 A

Poor

Over: CLEAR CREEK

3.5 MI NW PALMER, Christian, IL

Built 1900 Load: 32.4 t ADT: 20

CH 11

Poor

Over: LITTLE WABASH RIVER

2.3 MI W OF ETNA, Coles, IL

Built 1978 Load: 32.4 t ADT: 450

TR 74B

Poor

Over: RILEY CREEK

1.25 MI NE MATTOON, Coles, IL

Built 1981 Load: 32.4 t ADT: 700

TR 23

Poor

Over: Kaskaskia River

2.8 Mi. W Humboldt, Coles, IL

Built 2016 Load: 32.4 t ADT: 100

TR 120

Poor

Over: Flat Branch

2.9 mi. E Humboldt, Coles, IL

Built 2015 Load: 32.4 t ADT: 100

TR 318

Poor

Over: HOG BRANCH

2 MI NE OF OAKLAND, Coles, IL

Built 2009 Load: 32.4 t ADT: 50

IL 43 SB HARLEM A

Poor

Over: SAN & SHIP CANAL

0.1 M N I-55, Cook, IL

Built 1966 Load: 32.4 t ADT: 35,500

WABASH AVE

Poor

Over: MAIN BR CHICAGO RIV

44 E & 326 N, Cook, IL

Built 1930 Load: 32.4 t ADT: 7,350

LaSalle St.

Poor

Over: Parking Area

140 W. and 330 N., Cook, IL

Built 1928 Load: 32.4 t ADT: 18,600

103RD ST

Poor

Over: NORFOLK SOUTHERN RR

10300S&1800E_2000E, Cook, IL

Built 1938 Load: 32.4 t ADT: 19,800

BALMORAL AVENUE

Poor

Over: CANADIAN CENTRAL RAILROA

0.25 MI W OF I-294, Cook, IL

Built 2000 Load: 32.4 t ADT: 3,000

Lane Court

Poor

Over: 63rd Street Ditch

.25 Mi W of Madison, DuPage, IL

Built 1997 Load: 32.4 t ADT: 100

PEBBLE CREEK DR.

Poor

Over: WILLOW WAY CREEK

W.OF LEASK LANE, DuPage, IL

Built 1980 Load: 32.4 t ADT: 400

FAI-57 NB

Poor

Over: GREEN CREEK

1.5 MI S SHELBY C L, Effingham, IL

Built 1964 Load: 32.4 t ADT: 9,450

MADISON STREET 300

Poor

Over: CREEK

FARINA, Fayette, IL

Built 1930 Load: 32.4 t ADT: 225

ILL 154

Poor

Over: REND LAKE

2.5 MI W I-57, Franklin, IL

Built 1967 Load: 32.4 t ADT: 2,650

TR 227

Poor

Over: SHAW CREEK

SW-11-T6NR1E, Fulton, IL

Built 1996 Load: 32.4 t ADT: 10

BOTTOM RD - TR 288

Poor

Over: COAL CREEK

NW-19-T8NR3E, Fulton, IL

Built 1996 Load: 32.4 t ADT: 25

PERRY HILL RD-TR 4

Poor

Over: OTTER CREEK

SE-29-T4NR2E, Fulton, IL

Built 1981 Load: 32.4 t ADT: 75

TR 106 ASHTON RD

Poor

Over: E FK NETTLE CREEK

0.08 MI S NELSON RD, Grundy, IL

Built 1986 Load: 32.4 t ADT: 225

TR-110 DWIGHT RD

Poor

Over: JOHNNY RUN

.08 MI N MINE RD, Grundy, IL

Built 1981 Load: 32.4 t ADT: 150

GARDNER RD/FAS 292

Poor

Over: JOHNNY RUN

.36 MI W-BUFFALO RD, Grundy, IL

Built 1992 Load: 32.4 t ADT: 800

GOODFARM RD TR-155

Poor

Over: TRIB E FK MAZON RIV

.13 MI E HALPIN RD, Grundy, IL

Built 1980 Load: 32.4 t ADT: 50

TR 161 STONEWALL R

Poor

Over: TRIB E FK MAZON R

.06 MI W KANKAKEE RD, Grundy, IL

Built 1988 Load: 32.4 t ADT: 75

FAP 685, ILL 9

Poor

Over: MISSISSIPPI RIVER

FORT MADISON IOWA, Hancock, IL

Built 1927 Load: 32.4 t ADT: 2,500

TR-384

Poor

Over: Mud Creek

3.0 MI NE ATKINSON, Henry, IL

Built 1969 Load: 32.4 t ADT: 50

TR 257

Poor

Over: MUD CREEK

5.5 M NW KEWANEE, Henry, IL

Built 1982 Load: 32.4 t ADT: 25

CH 34

Poor

Over: KING CREEK

2.5 M SE OF ANNAWAN, Henry, IL

Built 1985 Load: 32.4 t ADT: 200

FAI-57 NB

Poor

Over: IC RR

8.98 MI S ASHKUM INT, Iroquois, IL

Built 1967 Load: 32.4 t ADT: 9,050

FAS-330 CH31

Poor

Over: IROQUOIS RIVER

1MI N WATSEKA ON 31, Iroquois, IL

Built 1965 Load: 32.4 t ADT: 1,200

Showing 27,151-27,200 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.