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

FLAGG RD

Good

Over: BRANCH KYTE RIVER

4.0 MI N ASHTON, Ogle, IL

Built 1956 Load: 22.4 t ADT: 1,150

MONTAGUE RD.

Good

Over: UNNAMED CR

3.5 W. BAILEYVILLE, Ogle, IL

Built 1967 Load: 22.4 t ADT: 150

BASE LINE RD.

Good

Over: DRAINAGE DITCH

2.0 N.E. LINDENWOOD, Ogle, IL

Built 1960 Load: 22.4 t ADT: 50

LAKESHORE DR - TR

Good

Over: STREAM

SE-23-T11NR7E, Peoria, IL

Built 1966 Load: 22.4 t ADT: 75

TR 215

Good

Over: STREAM

1.0 MI W OF HAMMOND, Piatt, IL

Built 1973 Load: 22.4 t ADT: 50

E WINNESHEIK ROAD

Good

Over: ROCK RUN CREEK

4.5 MI S ROCK CITY, Stephenson, IL

Built 1972 Load: 22.4 t ADT: 125

TR 205

Good

Over: Frazier Creek

3.0 MILES S. OF URSA, Adams, IL

Built 1969 Load: 22.7 t ADT: 300

WASHINGTON ST.

Good

Over: BN RR

S EDGE OF BUDA, Bureau, IL

Built 2008 Load: 22.7 t ADT: 150

CH 7(FAS 546)

Good

Over: SALT CREEK OVERFLOW

1 MI N OF KENNY, De Witt, IL

Built 1962 Load: 22.7 t ADT: 225

TR 76 A

Good

Over: STREAM

0.5 MI S OF HUME, Edgar, IL

Built 1964 Load: 22.7 t ADT: 75

TR 74A PATTON

Good

Over: STREAM

480N 2000E, Ford, IL

Built 1973 Load: 22.7 t ADT: 250

FAS 452-CH 2

Good

Over: LITTLE COAL CREEK

SW-27-T8NR2E, Fulton, IL

Built 1954 Load: 22.7 t ADT: 325

TR 388

Good

Over: W.BR INDIAN CREEK

4.0 MI E GALVA, Henry, IL

Built 1930 Load: 22.7 t ADT: 100

GITTLESON RD

Good

Over: STEWARD CREEK

1.0 MI S OF OGLE CO, Lee, IL

Built 1972 Load: 22.7 t ADT: 25

HAYES RD

Good

Over: TRIB STEWARD CR

0.6 MI E STEWARD RD, Lee, IL

Built 1966 Load: 22.7 t ADT: 10

WOODLAWN ROAD

Good

Over: BR OF STEWARD CREEK

0.3 M S REYNOLDS RD, Lee, IL

Built 1968 Load: 22.7 t ADT: 125

FAS 351 CH 6

Good

Over: Indian Creek

0.5 Mil S of Fairbur, Livingston, IL

Built 2012 Load: 22.7 t ADT: 1,550

TR 218

Good

Over: LAKE FORK TRIBUTARY

1MI.W.1MI.S.MT.PULAS, Logan, IL

Built 1963 Load: 22.7 t ADT: 150

MAD BOND CO LINE

Good

Over: CREEK

0.04M N I70, Madison, IL

Built 1965 Load: 22.7 t ADT: 325

CH 27

Good

Over: CREEK

2 MI SE KINMUNDY, Marion, IL

Built 1952 Load: 22.7 t ADT: 175

FAS 1436-CH 12

Good

Over: FARMERS FORK

SW-35-T7NR2W, McDonough, IL

Built 1956 Load: 22.7 t ADT: 275

TR 606 A

Good

Over: MACKINAW RIVER

2.0 MI E ANCHOR, McLean, IL

Built 1970 Load: 22.7 t ADT: 75

TR 168

Good

Over: BRANCH TIMBER CREEK

1.0 MILE E SHIRLEY, McLean, IL

Built 1970 Load: 22.7 t ADT: 75

TR 396

Good

Over: MONEY CREEK

5.0 MI SW COOKSVILLE, McLean, IL

Built 1969 Load: 22.7 t ADT: 50

TR 530

Good

Over: BRANCH SALT CREEK

4.8 MI SW BELLFLOWER, McLean, IL

Built 1973 Load: 22.7 t ADT: 75

CH 23 GOBY

Good

Over: BR MACOUPIN CK

3 SW WAGGONER, Montgomery, IL

Built 1971 Load: 22.7 t ADT: 75

TWOMBLY RD.

Good

Over: BR.KILLBUCK CR.

1.0 N. CRESTON, Ogle, IL

Built 1950 Load: 22.7 t ADT: 75

SUMMER HILL RD

Good

Over: FIVE MILE CREEK

4 MI E BROOKVILLE, Ogle, IL

Built 1973 Load: 22.7 t ADT: 50

WHITE EAGLE ROAD

Good

Over: BRANCH LEAF RIVER

1.5 MI NE FORRESTON, Ogle, IL

Built 1974 Load: 22.7 t ADT: 200

TR 161

Good

Over: DRAINAGE DITCH

2.5 MI SE BEMENT, Piatt, IL

Built 1960 Load: 22.7 t ADT: 50

TR 514 (15E)

Good

Over: CLEAR CREEK

1.0 W OF LANESVILLE, Sangamon, IL

Built 1969 Load: 22.7 t ADT: 50

GORDON DRIVE

Good

Over: GRINDSTONE CR

SE CHATHAM, Sangamon, IL

Built 1969 Load: 22.7 t ADT: 3,600

WEST BUTZ ROAD

Good

Over: LOST CREEK

5.0 M SE PEARL CITY, Stephenson, IL

Built 1971 Load: 22.7 t ADT: 75

TR-111 (MAIN RD)

Good

Over: BR OF YELLOW CREEK

1.5 MI W OF LENA, Stephenson, IL

Built 1939 Load: 22.7 t ADT: 425

TR 61

Good

Over: DILLON CREEK

CTR-25-T25NR4W, Tazewell, IL

Built 1947 Load: 22.7 t ADT: 1,400

TR 260

Good

Over: STREAM

E.CTR-13-T22NR3W, Tazewell, IL

Built 1900 Load: 22.7 t ADT: 10

TR-134

Good

Over: WALNUT DITCH

1.5 MI. S. NORMANDY, Bureau, IL

Built 1934 Load: 23.0 t ADT: 225

CH 3(FAS 1678)

Good

Over: CRABAPPLE CREEK

1 MI S OF SCOTTLAND, Edgar, IL

Built 1967 Load: 23.0 t ADT: 75

CH 5 FAS 236

Good

Over: S EDWARDS RIVER

1 MI N GALVA, Henry, IL

Built 1977 Load: 23.0 t ADT: 1,500

CH44 FAS1336

Good

Over: SPRING CREEK

.7MI E US45 ON CH44, Iroquois, IL

Built 1964 Load: 23.0 t ADT: 350

TR 32

Good

Over: SHORT POINT CREEK

2255N, 600E, Livingston, IL

Built 1964 Load: 23.0 t ADT: 75

TR-249

Good

Over: INDIAN CR

1980 E, 300 N, Livingston, IL

Built 1975 Load: 23.0 t ADT: 50

CH 24 FAS 1356

Good

Over: CREEK

.16 MI S. OF TR 133, Livingston, IL

Built 1965 Load: 23.0 t ADT: 250

TR 0032

Good

Over: STREAM

0.5 MILE N STANFORD, McLean, IL

Built 1977 Load: 23.0 t ADT: 75

TR 243

Good

Over: BR SUGAR CREEK

2.8 MI SW DANVERS, McLean, IL

Built 1973 Load: 23.0 t ADT: 50

CH 6

Good

Over: MACKINAW RIVER

4.8 MI SW GRIDLEY, McLean, IL

Built 1963 Load: 23.0 t ADT: 200

TR 35

Good

Over: ROOKS CREEK

3.5 MI SSE WESTON, McLean, IL

Built 1969 Load: 23.0 t ADT: 50

FAS-2816

Good

Over: LITTLE WABASH RIVER

6 MI S GOLDEN GATE, Wayne, IL

Built 1959 Load: 23.0 t ADT: 100

BENSON RD

Good

Over: REEDY CREEK

1 MI SO OF ALBANY, Whiteside, IL

Built 1975 Load: 23.0 t ADT: 50

ILL 29

Good

Over: ALLENS GROVE DITCH

.5MI S JCT US136& 29, Mason, IL

Built 1959 Load: 23.2 t ADT: 2,450

Showing 14,351-14,400 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.