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

HICKORY HILLS RD

Fair

Over: BR OF ELKHORN CREEK

2.5 MI N STERLING, Whiteside, IL

Built 1966 Load: 20.7 t ADT: 350

GAYLORD ROAD

Fair

Over: ROCK RUN CREEK

1 MI W ILL7 AND US30, Will, IL

Built 1971 Load: 20.7 t ADT: 7,050

TR 9

Fair

Over: PRAIRIE CK

1 MI W EMDEN, Logan, IL

Built 1964 Load: 20.9 t ADT: 75

ILLINOIS 127

Fair

Over: HARTLINE CREEK

2.3MI S UNION CO., Alexander, IL

Built 1973 Load: 21.1 t ADT: 675

CH 6

Fair

Over: PURPUS CREEK

5.5 SW TIMEWELL, Brown, IL

Built 1905 Load: 21.1 t ADT: 475

N OLD GALENA TRAIL

Fair

Over: BR OF E FK OF PLUM R

2 MI N MT.CARROLL, Carroll, IL

Built 1925 Load: 21.1 t ADT: 100

FAS577

Fair

Over: JOBS CREEK

5.5 MI N VIRGINIA, Cass, IL

Built 1958 Load: 21.1 t ADT: 600

CH12-FAS 732

Fair

Over: COTTON CREEK

7.5 MI W PANA, Christian, IL

Built 1925 Load: 21.1 t ADT: 500

TR 229

Fair

Over: BRUSH CREEK

2MI S TAYLORVILLE, Christian, IL

Built 1920 Load: 21.1 t ADT: 100

TR-396

Fair

Over: E FK WET WEATHER CR

0.5 MI S WENDELIN, Clay, IL

Built 1975 Load: 21.1 t ADT: 100

TR 19

Fair

Over: CRABAPPLE CREEK

.5 MI S OF WOODYARD, Edgar, IL

Built 1972 Load: 21.1 t ADT: 50

TR 154

Fair

Over: BROUILLETTS CREEK

1.5 MI NW CHERRY PT, Edgar, IL

Built 1971 Load: 21.1 t ADT: 50

COUNTY HIGHWAY 9

Fair

Over: EAST CREEK

NE-11-T4NR3E, Fulton, IL

Built 1959 Load: 21.1 t ADT: 525

Hillview/Eldred Ro

Fair

Over: Dayton Hollow Creek

3.5 S ELDRED, Greene, IL

Built 1946 Load: 21.1 t ADT: 500

FAS-1879

Fair

Over: MIDDLE FORK CREEK

1.3 MI NE MACEDONIA, Hamilton, IL

Built 1960 Load: 21.1 t ADT: 300

TR 345A

Fair

Over: TRIB TO SPRING CR

.5 MI E OF US 45, Iroquois, IL

Built 1916 Load: 21.1 t ADT: 50

FAS 749

Fair

Over: OTTER CREEK

2.2 MI N IL RT 3, Jersey, IL

Built 1963 Load: 21.1 t ADT: 900

FAS 928

Fair

Over: CACHE RIVER

NW1/4 SEC 6 T14S,R3E, Johnson, IL

Built 1948 Load: 21.1 t ADT: 550

SMITH ROAD

Fair

Over: BLACKBERRY CREEK

2.0 MI S ELBURN, Kane, IL

Built 1964 Load: 21.1 t ADT: 275

TR 183

Fair

Over: DEER CREEK

6 MI SW AROMA PARK, Kankakee, IL

Built 1910 Load: 21.1 t ADT: 175

CH 16

Fair

Over: BLACK WALNUT CR

3.2 MI NE MANTENO, Kankakee, IL

Built 1965 Load: 21.1 t ADT: 1,900

TR 69

Fair

Over: FARR CREEK

2MI NE EXLINE, Kankakee, IL

Built 1976 Load: 21.1 t ADT: 75

FAS268 B/CH15

Fair

Over: COVEL CREEK

E 22ND,N 2215, LaSalle, IL

Built 1955 Load: 21.1 t ADT: 950

CENTER ROAD

Fair

Over: BR OF BUREAU CREEK

3.1 M S OF SUBLETTE, Lee, IL

Built 1961 Load: 21.1 t ADT: 25

ATANTA-BEASON RD

Fair

Over: KICKAPOO CK

4 MI S ATLANTA, Logan, IL

Built 1948 Load: 21.1 t ADT: 400

TR 176

Fair

Over: HUNTER SLOUGH

2 E .5 MI S CORNLAND, Logan, IL

Built 1955 Load: 21.1 t ADT: 100

TR 187

Fair

Over: SALT CK TRIB

3 W 2.5 MI N MT PLSK, Logan, IL

Built 1958 Load: 21.1 t ADT: 50

TR 60

Fair

Over: SUGAR CR FLOOD PLAIN

4 MI E NEW HOLLAND, Logan, IL

Built 1989 Load: 21.1 t ADT: 20

TR 268

Fair

Over: ROGERS DITCH

3 MI SE MASON CITY, Mason, IL

Built 1900 Load: 21.1 t ADT: 50

TR 290

Fair

Over: MACKINAW RIVER

4.8 MI SW GRIDLEY, McLean, IL

Built 1973 Load: 21.1 t ADT: 200

FAS 206-CH 4

Fair

Over: CAMP CREEK

SW-12-T15NR1W, Mercer, IL

Built 1958 Load: 21.1 t ADT: 1,100

TR 69

Fair

Over: W FORK SHOAL CR

2 MI W HARVEL, Montgomery, IL

Built 1900 Load: 21.1 t ADT: 25

HALDANE RD.

Fair

Over: BR. PINE CREEK

1.5 E. HALDANE, Ogle, IL

Built 1956 Load: 21.1 t ADT: 100

PARKS SCHOOL ROAD

Fair

Over: HICKORY CREEK

NE1/4 7 RADNOR ROAD, Peoria, IL

Built 1959 Load: 21.1 t ADT: 325

TR 178

Fair

Over: DRAINAGE DITCH

1.0 MI S IVESDALE, Piatt, IL

Built 1966 Load: 21.1 t ADT: 25

TR-230

Fair

Over: CREEK

3 MI NW BERRYVILLE, Richland, IL

Built 1909 Load: 21.1 t ADT: 10

CH 50

Fair

Over: RAYHILL SLOUGH

1.50MI S ILL 177, St. Clair, IL

Built 1954 Load: 21.1 t ADT: 475

W HOWARDSVILLE ROA

Fair

Over: BR OF YELLOW CREEK

1.3 MI W OF LENA, Stephenson, IL

Built 1915 Load: 21.1 t ADT: 25

N. WAYNE ROAD

Fair

Over: BR OF SPAFFORD CREEK

5.0 MI W WINSLOW, Stephenson, IL

Built 1969 Load: 21.1 t ADT: 50

NORTH BOLENDER RD

Fair

Over: BR OF E RICHLAND CR

1.5 MI N ORANGEVILLE, Stephenson, IL

Built 1968 Load: 21.1 t ADT: 100

LYNDON ROAD

Fair

Over: FRENCH CREEK

1 MI N OF US 30, Whiteside, IL

Built 1933 Load: 21.1 t ADT: 1,000

TR 257

Fair

Over: BRANCH FRAZIER CREEK

2.9 MI N QUINCY, Adams, IL

Built 1974 Load: 21.4 t ADT: 275

N LORAN ROUTE

Fair

Over: BR. E. FK. PLUM RIV

5.7 MI NE MT.CARROLL, Carroll, IL

Built 1955 Load: 21.4 t ADT: 200

TR 244

Fair

Over: BRUSHY BRANCH

5MI W ASSUMPTION, Christian, IL

Built 1922 Load: 21.4 t ADT: 50

TR 102/BEAVER ROAD

Fair

Over: STREAM

8.5 MI. N. BECKMEYER, Clinton, IL

Built 1971 Load: 21.4 t ADT: 50

TR-204

Fair

Over: S FK RACCOON CREEK

5 MI NW HUTSONVILLE, Crawford, IL

Built 1950 Load: 21.4 t ADT: 50

E PAW PAW RD

Fair

Over: BR PAW PAW RUN

205N 030E, DeKalb, IL

Built 1955 Load: 21.4 t ADT: 100

TR 261

Fair

Over: EAST DONICA CREEK

0.5 MI N OF KANSAS, Edgar, IL

Built 1970 Load: 21.4 t ADT: 50

SEVEN HILLS RD-TR4

Fair

Over: SHAW CREEK

SE-29-T7NR1E, Fulton, IL

Built 1976 Load: 21.4 t ADT: 50

MSS 1030

Fair

Over: RUBICON CREEK

GREENFIELD, Greene, IL

Built 1974 Load: 21.4 t ADT: 675

Showing 4,701-4,750 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.