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

FAS-716 (CH-4)

Good

Over: LITTLE CREEK

3 MI N ST ELMO, Fayette, IL

Built 1941 Load: 20.1 t ADT: 900

TR 288

Good

Over: SOUTH EDWARDS RIVER

2.0 MI NW GALVA, Henry, IL

Built 1968 Load: 20.1 t ADT: 50

TR 54

Good

Over: RAYMOND RUN

.5 MI N GOODRICH, Kankakee, IL

Built 1967 Load: 20.1 t ADT: 100

TR 149

Good

Over: SPRING CREEK

3MI E AROMA PARK, Kankakee, IL

Built 1976 Load: 20.1 t ADT: 100

SOUTH BEASON RD

Good

Over: DEER CK

3.5 MI E LINCOLN, Logan, IL

Built 1966 Load: 20.1 t ADT: 225

SOUTH FRONTAGE-TR3

Good

Over: CANTEEN CK

1.2 MI E ILL 159, Madison, IL

Built 1959 Load: 20.1 t ADT: 1,600

ILL 97

Good

Over: PECAN RUN CREEK

1.2MI SO KILBOURNE, Mason, IL

Built 1986 Load: 20.1 t ADT: 1,600

TR 142

Good

Over: SUGAR CREEK

2.5 MI NNW SHIRLEY, McLean, IL

Built 1967 Load: 20.1 t ADT: 100

TR 168

Good

Over: BOLIN BRANCH

5 MI NE SULLIVAN, Moultrie, IL

Built 1957 Load: 20.1 t ADT: 50

ILL 145

Good

Over: STREAM

1.6M N.OF ILL 146, Pope, IL

Built 1947 Load: 20.1 t ADT: 1,150

TR 173

Good

Over: Stream

3.8 Mi NE Tower Hill, Shelby, IL

Built 2013 Load: 20.1 t ADT: 50

NORTH UNITY RD

Good

Over: SPRING CREEK

3.5 MI NE OF LENA, Stephenson, IL

Built 1954 Load: 20.1 t ADT: 50

TR 108

Good

Over: STREAM

2.25 MI S OF TUSCOLA, Douglas, IL

Built 1938 Load: 20.4 t ADT: 550

FAS-709 (CH-19)

Good

Over: BISHOP CREEK

5 MI E HEARTVILLE, Effingham, IL

Built 1939 Load: 20.4 t ADT: 850

TR 52

Good

Over: CREEK

0.5 MI SW BONFIELD, Kankakee, IL

Built 1981 Load: 20.4 t ADT: 25

TR 84

Good

Over: POPE CREEK

SW-6-T13NR2E, Knox, IL

Built 1970 Load: 20.4 t ADT: 100

FAS 441 - CH 15

Good

Over: GRINDSTONE CREEK

SW-16-T4NR2W, McDonough, IL

Built 1952 Load: 20.4 t ADT: 425

TR 339

Good

Over: MIDDLE FORK SUGAR CR

2.5 MILE E STANFORD, McLean, IL

Built 1969 Load: 20.4 t ADT: 300

CHAMBERLAIN RD.

Good

Over: DRAINAGE DITCH

5.3 S.E. LINDENWOOD, Ogle, IL

Built 1963 Load: 20.4 t ADT: 25

E BRICK SCHOOL ROA

Good

Over: WINNESHIEK CREEK

1.6 MI E OF IL RT 75, Stephenson, IL

Built 1973 Load: 20.4 t ADT: 50

GILS RD - TR 179

Good

Over: LITTLE MACKINAW RIVE

N.CTR-9-T23NR2W, Tazewell, IL

Built 1961 Load: 20.4 t ADT: 50

PEINE RD - TR 209

Good

Over: W F SUGAR CREEK

SE COR-12-T23NR2W, Tazewell, IL

Built 1960 Load: 20.4 t ADT: 50

BURNHAM AVE

Good

Over: NORTH CREEK

1.0 Miles N of IL 83, Cook, IL

Built 1935 Load: 20.7 t ADT: 5,700

TR 208

Good

Over: STREAM

5 MI NE OF PARIS, Edgar, IL

Built 1974 Load: 20.7 t ADT: 250

FAS-651 (CH-14)

Good

Over: MITCHELL CREEK BRANC

3.2 MI E HERRICK, Fayette, IL

Built 1962 Load: 20.7 t ADT: 900

LYNNVILLE RD

Good

Over: BRANCH KILLBUCK CR

7.0 MI NE HILLCREST, Ogle, IL

Built 1958 Load: 20.7 t ADT: 525

BROOKVILLE RD.

Good

Over: BR. ELKHORN CR.

0.5 N. BROOKVILLE, Ogle, IL

Built 1958 Load: 20.7 t ADT: 25

S SHANNON ROAD

Good

Over: LOST CREEK

7.0 MI SW FREEPORT, Stephenson, IL

Built 1957 Load: 20.7 t ADT: 450

RANGE RD

Good

Over: BR OF PECATONICA RIV

3.5 MI E OF LENA, Stephenson, IL

Built 1969 Load: 20.7 t ADT: 50

TR-345A

Good

Over: CREEK

1 MI S NORRIS CITY, White, IL

Built 1954 Load: 20.7 t ADT: 125

PILGRIM RD

Good

Over: LITTLE SPRING CREEK

2 MI WEST OF COLETA, Whiteside, IL

Built 1961 Load: 20.7 t ADT: 525

ACKER ROAD

Good

Over: DRAINAGE DITCH

3 MI E. FULTON, Whiteside, IL

Built 1957 Load: 20.7 t ADT: 150

WEMPLETOWNROAD

Good

Over: BR N FORK KENT CR

0.5 MI N OF AUBURN R, Winnebago, IL

Built 1973 Load: 20.7 t ADT: 75

TR 28 A

Good

Over: STREAM

6.0 MI SW FISHER, Champaign, IL

Built 1954 Load: 21.1 t ADT: 50

TR 133

Good

Over: BIG CREEK

5 MI SE MARSHALL, Clark, IL

Built 1969 Load: 21.1 t ADT: 100

CH 6

Good

Over: HAYES BRANCH

1 MI W OF HAYES, Douglas, IL

Built 1966 Load: 21.1 t ADT: 150

CH 6(FAS 513)

Good

Over: BROUILLETTS CREEK

3.3 MI N OF METCALF, Edgar, IL

Built 1958 Load: 21.1 t ADT: 150

TR 267

Good

Over: CLEAR CREEK

3 MI SE OF PARIS, Edgar, IL

Built 1971 Load: 21.1 t ADT: 225

TOWNSHIP ROAD NO 5

Good

Over: IRISH HOLLOW CREEK

7 MI NW ELIZABETH, Jo Daviess, IL

Built 1957 Load: 21.1 t ADT: 150

FAU-6340 (CH-32)

Good

Over: Br Sugar Creek

1.5 MI N SHIRLEY, McLean, IL

Built 1974 Load: 21.1 t ADT: 950

BIG MOUND RD.

Good

Over: BR. STILLMAN CR.

2.5 S.E. STILLMAN VA, Ogle, IL

Built 1960 Load: 21.1 t ADT: 300

TOWNSHIP ROAD 232

Good

Over: DRAINAGE DITCH

2 MI SW OF HILLSDALE, Rock Island, IL

Built 1977 Load: 21.1 t ADT: 25

FAS 1481-CH 7

Good

Over: SARGENT SLOUGH

S.CTR-31-T24NR2W, Tazewell, IL

Built 1960 Load: 21.1 t ADT: 1,150

N CARTER ROAD

Good

Over: EAST FORK PLUM RIVER

5 MI NE MT CARROLL, Carroll, IL

Built 1975 Load: 21.4 t ADT: 75

FAS-517 (CH-11)

Good

Over: Upper SaltFork Drain

1.5 MI W FLATVILLE, Champaign, IL

Built 1977 Load: 21.4 t ADT: 1,100

TR 184A/CREEK ROAD

Good

Over: PRAIRIE BRANCH

LAKE-BROOKSIDE, Clinton, IL

Built 1974 Load: 21.4 t ADT: 75

TR 80/MUNICH ROAD

Good

Over: HANOVER DITCH

6.5 M SE GERMANTOWN, Clinton, IL

Built 1975 Load: 21.4 t ADT: 375

PINE ST

Good

Over: UNION PACIFIC RR

0.6 M S OF TOWER RD, Cook, IL

Built 1940 Load: 21.4 t ADT: 1,400

TR 208

Good

Over: STREAM

5 MI NE OF PARIS, Edgar, IL

Built 1974 Load: 21.4 t ADT: 250

FAS 1336 CH 44

Good

Over: DRAINAGE DITCH

3 MI E .5M S BUCKLEY, Iroquois, IL

Built 1941 Load: 21.4 t ADT: 325

Showing 14,251-14,300 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.