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

CH 7

Fair

Over: HOMAN CREEK

2.3 MILES N QUINCY, Adams, IL

Built 1965 Load: 24.3 t ADT: 625

CH 10

Fair

Over: MCCRANEY CREEK

2 MI E PLAINVILLE, Adams, IL

Built 1938 Load: 24.3 t ADT: 225

TR 124

Fair

Over: GRINDSTONE CRK.

4.5 MI W LORAINE, Adams, IL

Built 1918 Load: 24.3 t ADT: 50

TR 203

Fair

Over: CREEK

3.7 MI SW URSA, Adams, IL

Built 1905 Load: 24.3 t ADT: 75

TR 378

Fair

Over: CREEK

4.0 MI W LAPRAIRIE, Adams, IL

Built 1935 Load: 24.3 t ADT: 50

TR 398

Fair

Over: Beebe Creek

2.2 M SW KINGSTON, Adams, IL

Built 1905 Load: 24.3 t ADT: 25

TR 474

Fair

Over: CREEK

1.7 MI N LAPRAIRIE, Adams, IL

Built 1905 Load: 24.3 t ADT: 50

TR 89A

Fair

Over: BEAR CRK

2.5 MI S OF LORAINE, Adams, IL

Built 1969 Load: 24.3 t ADT: 125

TR 387

Fair

Over: LIERLE CREEK

2.7 MI N LIBERTY, Adams, IL

Built 1971 Load: 24.3 t ADT: 50

TR 0180A

Fair

Over: MILL CREEKBRANCH

3.25 MI N PAYSON, Adams, IL

Built 1970 Load: 24.3 t ADT: 75

TR 312

Fair

Over: BRANCH OF MCKEE CRK

1.0 MI S COATSBURG, Adams, IL

Built 1908 Load: 24.3 t ADT: 50

TR 0410

Fair

Over: CREEK

2.7 MI NE LIBERTY, Adams, IL

Built 1977 Load: 24.3 t ADT: 50

TR 0457

Fair

Over: BRANCH OF MCKEE CRK

3.2 MI E LIBERTY, Adams, IL

Built 1900 Load: 24.3 t ADT: 100

ILL 3

Fair

Over: PIGEON ROOST CREEK

OLIVE BRANCH, Alexander, IL

Built 1965 Load: 24.3 t ADT: 3,300

TR 5

Fair

Over: E BRANCH OF BEAVER C

5.75M W KEYSPORT, Bond, IL

Built 1959 Load: 24.3 t ADT: 375

TR 111

Fair

Over: TRIB INDIAN CREEK

3.0M NW GREENVILLE, Bond, IL

Built 1901 Load: 24.3 t ADT: 50

TR 101A

Fair

Over: INDIAN CREEK

3.0M NW GREENVILLE, Bond, IL

Built 1982 Load: 24.3 t ADT: 100

TR 20

Fair

Over: BR LITTLE DRY FK

1.5 MI NW OLD RIPLEY, Bond, IL

Built 1979 Load: 24.3 t ADT: 25

TR 0053

Fair

Over: ABANDONED RR ROW

1.75 MI W SORENTO, Bond, IL

Built 1940 Load: 24.3 t ADT: 125

DAWSON LAKE RD

Fair

Over: BRANCH OF BEAVER CR

5.0 MI N BELVIDERE, Boone, IL

Built 1958 Load: 24.3 t ADT: 1,750

BERGEN RD

Fair

Over: N KINNIKINNICK CREEK

7.5 MI NW POPLAR GRV, Boone, IL

Built 1989 Load: 24.3 t ADT: 10

N BOONE SCHOOL RD

Fair

Over: S. KINNIKINNICK CRK.

3.0 MI N CALEDONIA, Boone, IL

Built 1965 Load: 24.3 t ADT: 100

TOWNSHIP RD 97A

Fair

Over: W. BUREAU CR.

3 MI. W. OF KASBEER, Bureau, IL

Built 1920 Load: 24.3 t ADT: 125

TOWNSHIP RD 4

Fair

Over: SPRING CREEK

3 MI NE OF LADD, Bureau, IL

Built 1934 Load: 24.3 t ADT: 275

TR 183

Fair

Over: BRANCH W. BUREAU CRE

4 MI. N. OF WYANET, Bureau, IL

Built 1967 Load: 24.3 t ADT: 175

TR-246

Fair

Over: LIME CREEK

5 MI. N. PRINCETON, Bureau, IL

Built 1915 Load: 24.3 t ADT: 75

TR-59

Fair

Over: FAIRFIELD DITCH

2.5 MI. S. YORKTOWN, Bureau, IL

Built 1910 Load: 24.3 t ADT: 75

TR 345

Fair

Over: SILVER CREEK

1.5 MI SW PROVIDENCE, Bureau, IL

Built 1928 Load: 24.3 t ADT: 50

TR 174

Fair

Over: WALNUT DITCH

1 MI SE OF WALNUT, Bureau, IL

Built 1969 Load: 24.3 t ADT: 50

TR 271 (1400N)

Fair

Over: BRANCH OF POND CREEK

1.5 MI. SW OF WYANET, Bureau, IL

Built 1920 Load: 24.3 t ADT: 100

C H 31

Fair

Over: BRANCH OF CROW CREEK

6.0 MI E BRADFORD, Bureau, IL

Built 1958 Load: 24.3 t ADT: 425

TR 192

Fair

Over: WALNUT CREEK

2 MI E OF WALNUT, Bureau, IL

Built 1966 Load: 24.3 t ADT: 35

TR 210

Fair

Over: WALNUT CREEK

3 MI E OF WALNUT, Bureau, IL

Built 1954 Load: 24.3 t ADT: 150

COUNTY HIGHWAY 16

Fair

Over: BR OF W FORK SPOON R

3 MI SW NEPONSET, Bureau, IL

Built 1936 Load: 24.3 t ADT: 425

TR 14

Fair

Over: MUD CREEK

2 MI W OF NEPONSET, Bureau, IL

Built 1935 Load: 24.3 t ADT: 50

FAS 755

Fair

Over: STREAM

0.13 S OF ILL 96, Calhoun, IL

Built 1941 Load: 24.3 t ADT: 225

FAS 755

Fair

Over: GRESHAM CR

0.6 MI S OF HAMBURG, Calhoun, IL

Built 1967 Load: 24.3 t ADT: 225

FAS 754

Fair

Over: PLUESTER CREEK

1 MILE N OF MEPPEN, Calhoun, IL

Built 1935 Load: 24.3 t ADT: 1,100

FAS 754

Fair

Over: METZ CREEK

0.4 MI N OF BRUSSELS, Calhoun, IL

Built 1937 Load: 24.3 t ADT: 1,100

FAS 754

Fair

Over: STREAM

4.8 M S HARDIN, Calhoun, IL

Built 1937 Load: 24.3 t ADT: 1,050

FAS 754

Fair

Over: STREAM

NEAR MEPPEN, Calhoun, IL

Built 1937 Load: 24.3 t ADT: 1,000

FAS 754

Fair

Over: STREAM

MEPPEN 3M N BRUSSELS, Calhoun, IL

Built 1937 Load: 24.3 t ADT: 1,000

FAS 754

Fair

Over: STREAM

1.75 MI N OF BRUSSEL, Calhoun, IL

Built 1931 Load: 24.3 t ADT: 1,000

W CAMP CREEK ROAD

Fair

Over: CAMP CREEK

3MI NE PALISADES PAR, Carroll, IL

Built 1952 Load: 24.3 t ADT: 25

W DAVIS ROAD

Fair

Over: BRANCH OF PLUM R

5 MI NW MT.CARROLL, Carroll, IL

Built 1927 Load: 24.3 t ADT: 50

W CORBETT ROAD

Fair

Over: BRANCH OF CARROLL CK

1 M NW MT CARROLL, Carroll, IL

Built 1927 Load: 24.3 t ADT: 150

GRANGE ROAD

Fair

Over: BRANCH OF MIDDLE CR

2 MI NW BROOKVILLE, Carroll, IL

Built 1975 Load: 24.3 t ADT: 75

W YORK CENTER ROAD

Fair

Over: BR OF JOHNSON CREEK

4 MI NE OF THOMSON, Carroll, IL

Built 1985 Load: 24.3 t ADT: 25

GOOSE ROAD

Fair

Over: GOOSE CREEK

4 MI SE MILLEDGEVIL., Carroll, IL

Built 1932 Load: 24.3 t ADT: 75

FAS577

Fair

Over: SCHAAD DITCH

5 MI NNW VIRGINIA, Cass, IL

Built 1948 Load: 24.3 t ADT: 600

Showing 5,151-5,200 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.