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

LAKE VIEW DRIVE

Poor

Over: ISLAND LAKE

N OF ILL 176, McHenry, IL

Built 1975 ADT: 450

TR 11

Poor

Over: GROVE CREEK

1.1MI N GREENVIEW, Menard, IL

Built 1900 ADT: 75

TR 164

Poor

Over: GROVE CR

3.0 MI SE GREENVIEW, Menard, IL

Built 1939 ADT: 75

TR 218

Poor

Over: CAMP CREEK

SE-16-T15N,R2W, Mercer, IL

Built 1983 ADT: 75

CH 12

Poor

Over: DRAINAGE CANAL

0.1 M W VALMEYER C L, Monroe, IL

Built 1935 ADT: 400

TR 167 A

Poor

Over: FAWN CREEK

4.1 M W OF WITT, Montgomery, IL

Built 1900 ADT: 25

TR 457

Poor

Over: DRY FORK CRK.

4.6 MI S FILLMORE, Montgomery, IL

Built 1954 ADT: 50

TR 314

Poor

Over: MDL FK SHOAL CR

4.2 M NW WENONAH, Montgomery, IL

Built 1969 ADT: 75

CH 23

Poor

Over: SPOON CRK.

5 MI W. WOODSON, Morgan, IL

Built 1963 ADT: 50

TR 260

Poor

Over: CONOVER CREEK

3.5 MI E LITERBERRY, Morgan, IL

Built 1955 ADT: 25

TR 137

Poor

Over: B&N RR

.5 M N J'VILLE, Morgan, IL

Built 1900 ADT: 50

SO SECOND STREET

Poor

Over: KYTE CREEK

ROCHELLE S 2ND ST, Ogle, IL

Built 1975 ADT: 125

TR 330

Poor

Over: HOG CREEK

0.1 MI S FAS 867, Perry, IL

Built 1940 ADT: 25

TR 69A

Poor

Over: MIDDLE FK MCKEE TR1B

4.0 MI SW PERRY, Pike, IL

Built 1920 ADT: 50

UNION ST

Poor

Over: SPRING CREEK

NEBO S CORP LIMITS, Pike, IL

Built 1941 ADT: 150

TR-261

Poor

Over: BONPAS CREEK

2.25 MI NW BERRYVL, Richland, IL

Built 1909 ADT: 25

TR 348

Poor

Over: HORSE CREEK

2.0 SE OF NEW CITY, Sangamon, IL

Built 1963 ADT: 225

TR 109

Poor

Over: STREAM

5.8 MI SE ASSUMPTION, Shelby, IL

Built 1909 ADT: 50

TR 199

Poor

Over: RICHLAND CREEK

3.3 MI NW STRASBURG, Shelby, IL

Built 1966 ADT: 50

TR 271

Poor

Over: RICHLAND CREEK

1.9 MI W STRASBURG, Shelby, IL

Built 1965 ADT: 50

TR 285

Poor

Over: OPPOSUM CREEK

3 MI NW OF OCONEE, Shelby, IL

Built 1969 ADT: 75

WERNER RD/ FAU 925

Poor

Over: SOUTHERN RR

0.3 MI E 74 ST, St. Clair, IL

Built 1960 ADT: 525

FAS 1372-CH 13

Poor

Over: CAMP RUN CREEK

NW COR-17-T12NR7E, Stark, IL

Built 1959 ADT: 650

CANDLEWOOD LN

Poor

Over: FARM CREEK

CTR-23-T26NR3W, Tazewell, IL

Built 1894 ADT: 150

TR 42A

Poor

Over: MIDDLE FORK VERM RIV

0.2 MI S ARMSTRONG, Vermilion, IL

Built 1910 ADT: 35

TR 313

Poor

Over: GRAPE CREEK

1 MI SW TILTON, Vermilion, IL

Built 1900 ADT: 75

TR 175

Poor

Over: SLUG RUN

SE-26-T10NR1W, Warren, IL

Built 1900 ADT: 75

TR-259

Poor

Over: SKILLET FORK

2 MI SW ORCHARDVILLE, Wayne, IL

Built 1909 ADT: 25

TR-287A

Poor

Over: LITTLE DRY FORK

6 MI N SIMS, Wayne, IL

Built 1940 ADT: 25

TR 231

Poor

Over: NEWTON BRANCH

2.5 MI SE MT ERIE, Wayne, IL

Built 1999 ADT: 25

TR-627

Poor

Over: POND CREEK

4.5 MI S GOLDEN GATE, Wayne, IL

Built 1984 ADT: 35

TR-15

Poor

Over: CREEK

5 MI SW GRAYVILLE, White, IL

Built 1958 ADT: 25

TR-291

Poor

Over: DRAINAGE DITCH

4 MI W RISING SUN, White, IL

Built 1930 ADT: 150

HIGHLAND RD

Poor

Over: BLACK WALNUT CREEK

0.2 MI N PAULING RD, Will, IL

Built 1978 ADT: 200

ARS-WILTON CTR.RD.

Poor

Over: FORKED CREEK

0.1M.W.OF WILTON CTR, Will, IL

Built 1990 ADT: 225

ROSCOE RD

Poor

Over: ROCK RIVER

0.2 MI. W. IL 251, Winnebago, IL

Built 1967 ADT: 10,700

FAS 363 CH 7

Poor

Over: PANTHER CREEK

4.5 MI SW SECOR, Woodford, IL

Built 1979 ADT: 525

FAS 363 CH 7

Poor

Over: PANTHER CR OVERFLOW

4.6 MI SW SECOR, Woodford, IL

Built 1979 ADT: 525

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

TR 180

Poor

Over: SHORT CREEK

3 MI NNE OF CARTHAGE, Hancock, IL

Built 1917 Load: 2.3 t ADT: 20

TR-290

Poor

Over: Martinton Ditch #3

1MI E MARTINTON, Iroquois, IL

Built 1959 Load: 2.3 t ADT: 175

S. APPLE RIVER ROA

Poor

Over: APPLE RIVER

1.5 MI NO. WOODBINE, Jo Daviess, IL

Built 1890 Load: 2.3 t ADT: 50

TR 831

Poor

Over: SPRING CREEK

0.3 Mi N of VET PKWY, Sangamon, IL

Built 1960 Load: 2.3 t ADT: 600

TR 343

Poor

Over: S. FORK SANGAMON R.

8 W OF ROSAMOND, Christian, IL

Built 1900 Load: 2.6 t ADT: 25

CH 17

Poor

Over: EXLINE SL

5.85 MI NE MANTENO, Kankakee, IL

Built 1961 Load: 2.6 t ADT: 1,050

Showing 25,651-25,700 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.