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 198A

Poor

Over: SLATER CREEK

1.0 MI W BOWEN, Hancock, IL

Built 1963 Load: 23.0 t ADT: 25

TR NO 244

Poor

Over: BRHOF SPRING CREEK

1.0 MI W DISCO, Hancock, IL

Built 1977 Load: 23.0 t ADT: 125

CARMAN RD

Poor

Over: DUGOUT CREEK

N EDGE LOMAX, Henderson, IL

Built 1954 Load: 23.0 t ADT: 2,000

TR 26

Poor

Over: HONEY CR

NE-14-T8NR6W, Henderson, IL

Built 1965 Load: 23.0 t ADT: 25

TR 228

Poor

Over: MUD CR

1 MI N. CH 20, Iroquois, IL

Built 1914 Load: 23.0 t ADT: 25

TR-148

Poor

Over: DRAINAGE DITCH

E 8TH N 4270, LaSalle, IL

Built 1969 Load: 23.0 t ADT: 10

FRANKLIN RD

Poor

Over: FRANKLIN CREEK

SW EDGE FRANKLIN GRO, Lee, IL

Built 1958 Load: 23.0 t ADT: 625

MEYERS RD

Poor

Over: GREEN RIVER

1.8 MI S AMBOY RD, Lee, IL

Built 1964 Load: 23.0 t ADT: 50

FAS 2368 (CH-S51)

Poor

Over: JUDD CREEK

FAS 2368 OV JUDD CR, Marshall, IL

Built 1969 Load: 23.0 t ADT: 150

DARTMOOR DRIVE

Poor

Over: BOONE CREEK

0.6 MI E CURRAN, McHenry, IL

Built 1998 Load: 23.0 t ADT: 2,550

TR 109

Poor

Over: STREAM

6.7 MI W HENTON, Shelby, IL

Built 1915 Load: 23.0 t ADT: 75

FAS-1810

Poor

Over: CREEK

2 MI NE COWLING, Wabash, IL

Built 1959 Load: 23.0 t ADT: 150

BAKER RD

Poor

Over: JACKSON CR

0.4 MI E US-52, Will, IL

Built 1923 Load: 23.0 t ADT: 75

O.R.# 0062

Poor

Over: BR MCKEE CREEK

SILOAM SPRINGS ST PK, Adams, IL

Built 1905 Load: 23.3 t ADT: 25

TR 192A

Poor

Over: MOSQUITO CREEK OVRF

2.0 MI N MT AUBURN, Christian, IL

Built 1940 Load: 23.3 t ADT: 100

TR 0128

Poor

Over: PANTHER CREEK

1MI W TAYLORVILLE, Christian, IL

Built 1958 Load: 23.3 t ADT: 450

TR 74

Poor

Over: GEORGE BRANCH

3MI NW EDINBURG, Christian, IL

Built 1960 Load: 23.3 t ADT: 50

CANAL ST

Poor

Over: Land

500W-600S TO 1000S, Cook, IL

Built 1926 Load: 23.3 t ADT: 12,900

HARRISON STREET

Poor

Over: UNION STATION TRACKS

600S 360W TO 500W, Cook, IL

Built 1921 Load: 23.3 t ADT: 5,100

CHIPPEWA ST

Poor

Over: GOOSEBERRY CREEK

W OF CHICAGO ST, Livingston, IL

Built 1979 Load: 23.3 t ADT: 400

9 MI. LANE

Poor

Over: SUGAR CREEK

4 MI. W. VIRDEN, Macoupin, IL

Built 1932 Load: 23.3 t ADT: 650

TR 3 (TH-D19)

Poor

Over: STREAM

0.6 M W OF WASHBURN, Marshall, IL

Built 1968 Load: 23.3 t ADT: 50

CH 3 (CH-S42)

Poor

Over: N BRANCH CROW CREEK

T29N-R1W-3PM SEC 21, Marshall, IL

Built 1959 Load: 23.3 t ADT: 75

TR 153

Poor

Over: KILLION DITCH

0.25 mi W of FAS 572A, Mason, IL

Built 1972 Load: 23.3 t ADT: 25

TR 214

Poor

Over: MAUVAISE TERRE CREEK

2.5MISEJACKSONVILLE, Morgan, IL

Built 1969 Load: 23.3 t ADT: 300

MAHER ROAD

Poor

Over: BR SPOON RIVER

NW 1/4 18 T11NR6E, Peoria, IL

Built 1930 Load: 23.3 t ADT: 75

FAS 1636

Poor

Over: RICHLAND CREEK

1.5 MI. E SALISBURY, Sangamon, IL

Built 1952 Load: 23.3 t ADT: 200

PRESS RD/ TR 197

Poor

Over: RICHLAND CREEK

1.5 MI E ILL. 159, St. Clair, IL

Built 1922 Load: 23.3 t ADT: 375

TR 367

Poor

Over: MCKEE CK

4.6 MI W KELLERVILLE, Adams, IL

Built 1933 Load: 23.7 t ADT: 75

TR 109 B

Poor

Over: E. BUREAU CREEK

3 MI. N.E. OF ZEARIN, Bureau, IL

Built 1901 Load: 23.7 t ADT: 25

TR 374

Poor

Over: PIKE CREEK

3.5 MI. NE LAMOILLE, Bureau, IL

Built 1960 Load: 23.7 t ADT: 200

TR 361

Poor

Over: FOX CREEK

3 MI NW OF MILO, Bureau, IL

Built 1968 Load: 23.7 t ADT: 25

WOLF RD

Poor

Over: FLAG CREEK

0.04 M S 79TH P10, Cook, IL

Built 1963 Load: 23.7 t ADT: 1,950

167TH(170TH)ST

Poor

Over: THORN CREEK

0.4 M E I94 P24, Cook, IL

Built 1935 Load: 23.7 t ADT: 10,200

TR 48A

Poor

Over: STREAM

2760N, 1299E, Ford, IL

Built 1988 Load: 23.7 t ADT: 50

TR 306

Poor

Over: WILLIAMS CREEK

2.5 MI SW AUGUSTA, Hancock, IL

Built 1969 Load: 23.7 t ADT: 25

TR 46

Poor

Over: CHANEY CREEK

1 MI N OF HAMILTON, Hancock, IL

Built 1956 Load: 23.7 t ADT: 200

TR 2

Poor

Over: STREAM

TR 2 DN SEC 113, Iroquois, IL

Built 1959 Load: 23.7 t ADT: 50

TR-290

Poor

Over: Pike Creek

2.25MI S MARTINTON, Iroquois, IL

Built 1965 Load: 23.7 t ADT: 825

TR 239

Poor

Over: SPRING CREEK

N 33RD E 050, LaSalle, IL

Built 1964 Load: 23.7 t ADT: 225

TR 188

Poor

Over: LAKE FORK CK FLD PLN

2 MI S LAKE FORK, Logan, IL

Built 1969 Load: 23.7 t ADT: 50

ILL 34 & 145

Poor

Over: STREAM

1.3 MI N OF ILL 145, Saline, IL

Built 1924 Load: 23.7 t ADT: 4,100

TR 279

Poor

Over: SOUTH FORK MUD CREEK

5 MI S LIVELY GROVE, Washington, IL

Built 1925 Load: 23.7 t ADT: 175

ARCH ROAD

Poor

Over: WINNEBAGO DITCH

7 MI S ROCK FALLS, Whiteside, IL

Built 1976 Load: 23.7 t ADT: 75

WEST DOTY ROAD

Poor

Over: DRAINAGE DITCH

1 MI SO OF SAVANNA, Carroll, IL

Built 1984 Load: 24.0 t ADT: 150

WASHINGTON ST

Poor

Over: S BR CHICAGO RIV

384 W WASHINGTON, Cook, IL

Built 1913 Load: 24.0 t ADT: 9,600

WARREN CO. TR 4

Poor

Over: S. FK. HENDERSON CR.

SE-24-T10NR4W, Henderson, IL

Built 1970 Load: 24.0 t ADT: 25

TR 26A MFT 110 TR

Poor

Over: LOUIS CREEK

1MI N BUCKLEY, Iroquois, IL

Built 1916 Load: 24.0 t ADT: 75

TR 285

Poor

Over: TRIB TO SUGAR CREEK

1.5N 1E OF STOCKLAND, Iroquois, IL

Built 1983 Load: 24.0 t ADT: 75

BUDD RD

Poor

Over: HOLLENBACK CREEK

NEAR MILLBROOK, Kendall, IL

Built 1978 Load: 24.0 t ADT: 700

Showing 26,501-26,550 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.