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-71 (ALDRICH RD)

Poor

Over: S BR KISHWAUKEE RV

2850N 1185E, DeKalb, IL

Built 1950 Load: 21.7 t ADT: 75

TR-450

Poor

Over: NORTH FORK CREEK

5 MI W FARINA, Fayette, IL

Built 1940 Load: 21.7 t ADT: 50

TR 2

Poor

Over: DRAINAGE DITCH

6.0 W TIOGA, Hancock, IL

Built 1974 Load: 21.7 t ADT: 75

TR 291

Poor

Over: SWAB RUN CREEK

SW-25-T10NR4E, Knox, IL

Built 1971 Load: 21.7 t ADT: 10

I-39 NB/US 51 NB

Poor

Over: TOMAHAWK CREEK

3.5 MI N OF I-80, LaSalle, IL

Built 1979 Load: 21.7 t ADT: 9,300

TR-43

Poor

Over: SOMONAUK CREEK

N 45TH E 2602, LaSalle, IL

Built 1953 Load: 21.7 t ADT: 100

TR 248

Poor

Over: DRAINAGE DITCH

1445 N, 3000 E, Livingston, IL

Built 1960 Load: 21.7 t ADT: 25

TR 35

Poor

Over: LOCAL DRAINAGE

2 MI S 2 MI E UNION, Logan, IL

Built 1960 Load: 21.7 t ADT: 35

SOUTH ST RD

Poor

Over: FRANKLINVILLE CR

0.1MI E OF ROSE FM, McHenry, IL

Built 1983 Load: 21.7 t ADT: 2,050

39TH AVE

Poor

Over: DRAINAGE DITCH

W EDGE OF 27TH ST, Rock Island, IL

Built 1972 Load: 21.7 t ADT: 1,600

SB ILL 116

Poor

Over: SPRING CREEK

ON ILL116 NE FR US24, Tazewell, IL

Built 1965 Load: 21.7 t ADT: 17,200

HOFFMAN RD - TR 11

Poor

Over: STREAM

S.CTR-18-T24NR2W, Tazewell, IL

Built 1963 Load: 21.7 t ADT: 250

FAP-817 (IL-15)

Poor

Over: Lunte Creek

3.6 MI W OF IL 127, Washington, IL

Built 1921 Load: 21.7 t ADT: 2,200

TR 128 S PROWANT R

Poor

Over: BRANCH ROCK CREEK

2 MI SE CHADWICK, Carroll, IL

Built 1962 Load: 22.0 t ADT: 25

TR 37

Poor

Over: LONE TREE CREEK

2 MI SW OF FOOSLAND, Champaign, IL

Built 1971 Load: 22.0 t ADT: 75

FAS-799 (CH-3)

Poor

Over: LITTLE MUDDY CREEK

2 MI W SAILER SPRING, Clay, IL

Built 1941 Load: 22.0 t ADT: 425

FAU-1369 (Schick R

Poor

Over: W Br. DuPage River

1.3 MI E. IL59, DuPage, IL

Built 1961 Load: 22.0 t ADT: 11,400

TR 388

Poor

Over: THOMPSON RESERVOIR

TR 388 OV THOMP RES, Franklin, IL

Built 1900 Load: 22.0 t ADT: 50

TR 753

Poor

Over: BRANCH SPOON RIVER

SE-22-T4NR3E, Fulton, IL

Built 1949 Load: 22.0 t ADT: 50

TR 170

Poor

Over: BIG MEADOW DITCH

3.1 MI S OF CARTHAGE, Hancock, IL

Built 1929 Load: 22.0 t ADT: 50

Old US 34

Poor

Over: S HENDERSON CREEK

0.3 MI E OF ILL 94, Henderson, IL

Built 1921 Load: 22.0 t ADT: 200

CO. HWY. 15

Poor

Over: LONETREE DITCH

NW-30-T10NR5W, Henderson, IL

Built 1979 Load: 22.0 t ADT: 575

TR 22B

Poor

Over: LOUIS CREEK

.8MI S CH9 1MIW US45, Iroquois, IL

Built 1964 Load: 22.0 t ADT: 25

TR97

Poor

Over: DRAINAGE DITCH

1.25 MI W ILL 1, Iroquois, IL

Built 1987 Load: 22.0 t ADT: 25

E SCHAPVILLE RD

Poor

Over: MILL CREEK

SCHAPVILLE, Jo Daviess, IL

Built 1965 Load: 22.0 t ADT: 350

TOWNSHIP ROAD NO.

Poor

Over: MENOMINEE RIVER

3 M NE E DUBUQUE, Jo Daviess, IL

Built 1968 Load: 22.0 t ADT: 1,150

NORTH FORD ROAD

Poor

Over: E FORK GALENA RIVER

4 MI NE OF GALENA, Jo Daviess, IL

Built 1983 Load: 22.0 t ADT: 100

CH 3

Poor

Over: DEER CR

3 MI W ST ANNE, Kankakee, IL

Built 1969 Load: 22.0 t ADT: 475

MS6240 (INDIANA AV

Poor

Over: MENDOTA CR

100 FT N BURLINGTON, LaSalle, IL

Built 1916 Load: 22.0 t ADT: 100

STERLING ROAD

Poor

Over: BR OF GREEN RIVER

0.2 M E OF US RT 52, Lee, IL

Built 1968 Load: 22.0 t ADT: 375

TR 184

Poor

Over: TRIB TO VERMILION R

1010N, 2100 EURY, Livingston, IL

Built 1966 Load: 22.0 t ADT: 25

TR0001H

Poor

Over: EAST FORK MAZON RIV

3390 E, 3300 N, Livingston, IL

Built 1977 Load: 22.0 t ADT: 350

TR 72

Poor

Over: PRAIRIE CREEK

.5 MI N EMDEN, Logan, IL

Built 1988 Load: 22.0 t ADT: 150

MELODY LANE

Poor

Over: SILVER CREEK

0.09M.W. OFIL-47, McHenry, IL

Built 1984 Load: 22.0 t ADT: 1,050

TR 156(FAS 1530)

Poor

Over: DRAINAGE DITCH

3.5 MI E BEMENT, Piatt, IL

Built 1962 Load: 22.0 t ADT: 50

TR 512

Poor

Over: BUCKHORN CREEK

2.5 NE PEARL, Pike, IL

Built 1920 Load: 22.0 t ADT: 20

TR 250

Poor

Over: BAY CR TRIB

1.5 M SW NEWSALEM, Pike, IL

Built 2007 Load: 22.0 t ADT: 25

CH 16(FAS 648)

Poor

Over: FLAT BRANCH

4 MI NW YANTISVILLE, Shelby, IL

Built 1942 Load: 22.0 t ADT: 350

TR-19 Midgely Neis

Poor

Over: Little Silver Creek

0.1 MI E ILL 4, St. Clair, IL

Built 1957 Load: 22.0 t ADT: 250

LAKE WINDMERE-TR10

Poor

Over: PRAIRIE CREEK

SE-17-T24NR3W, Tazewell, IL

Built 1967 Load: 22.0 t ADT: 775

JACKSON ST

Poor

Over: DES PLAINES RIVER

1.5 MI NO. OF I-80, Will, IL

Built 1932 Load: 22.0 t ADT: 2,550

FAS 366 CH 12

Poor

Over: RICHLAND CR

1.79 MI E of IL26, Woodford, IL

Built 1991 Load: 22.0 t ADT: 300

TR 312

Poor

Over: STREAM

3 MI SE OF ST JOSEPH, Champaign, IL

Built 1974 Load: 22.4 t ADT: 200

TR 267

Poor

Over: CLEAR CREEK

3MI NW MORRISONVILLE, Christian, IL

Built 1985 Load: 22.4 t ADT: 50

KEDZIE AVE

Poor

Over: CAL SAG CHANNEL

1.5 M N IL 83, Cook, IL

Built 1966 Load: 22.4 t ADT: 14,700

COTTAGE GROVE AVE

Poor

Over: DEER CR

1.25 N JOE ORR P2, Cook, IL

Built 1932 Load: 22.4 t ADT: 5,100

TR-469

Poor

Over: LITTLE HICKORY CREEK

5 MI NE SHOBONIER, Fayette, IL

Built 1930 Load: 22.4 t ADT: 50

CH 8 GALLAHUE

Poor

Over: STREAM

1210E,2800N, Ford, IL

Built 1958 Load: 22.4 t ADT: 50

CO HWY 31

Poor

Over: MIDDLE CREEK

2.0 MI NE MIDDLE CR, Hancock, IL

Built 1970 Load: 22.4 t ADT: 100

TR 244

Poor

Over: SPRING CREEK

3.0 MI W LAHARPE, Hancock, IL

Built 1983 Load: 22.4 t ADT: 125

Showing 26,401-26,450 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.