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

BROOKWOOD DR

Poor

Over: BUTTERFIELD CREEK

2600 W 19700S P21, Cook, IL

Built 1963 Load: 2.9 t ADT: 250

TR-175

Poor

Over: CREEK

1 MI N COWLING, Wabash, IL

Built 1909 Load: 2.9 t ADT: 25

TR 620 A

Poor

Over: STREAM

3 MI NE MT ERIE, Wayne, IL

Built 2009 Load: 2.9 t ADT: 10

TR 15

Poor

Over: STREAM

5.5 MI N MT ERIE, Wayne, IL

Built 2009 Load: 2.9 t ADT: 25

TR 49 B

Poor

Over: PRAIRIE CR

1.5 MI E. L'RABLE, Iroquois, IL

Built 1904 Load: 3.2 t ADT: 25

TR-304

Poor

Over: LITTLE SALT CREEK

3 MI NW DIETERICH, Effingham, IL

Built 1909 Load: 3.6 t ADT: 50

TR 28

Poor

Over: CRYSTAL GLEN CREEK

1.9 MI S HAMILTON, Hancock, IL

Built 1914 Load: 3.6 t ADT: 150

TR 28

Poor

Over: CRYSTAL GLEN CREEK

2.0 S HAMILTON, Hancock, IL

Built 1914 Load: 3.6 t ADT: 150

IMBS STATION RD

Poor

Over: PRAIRIE DUPONT CK

2.0 MI W IL 163, St. Clair, IL

Built 1997 Load: 3.6 t ADT: 900

TR 307

Poor

Over: Adams Creek

E. EDGE OF DEPUE, Bureau, IL

Built 1950 Load: 3.9 t ADT: 50

TR 343

Poor

Over: S. FORK SANGAMON R.

8 W OF ROSAMOND, Christian, IL

Built 1900 Load: 3.9 t ADT: 25

TR 25

Poor

Over: DRAINAGE DITCH

2 MI N OF OREANA, Macon, IL

Built 1985 Load: 3.9 t ADT: 50

TR 350

Poor

Over: HARRIS BRNCH

FULTON CO LINE, Schuyler, IL

Built 1900 Load: 3.9 t ADT: 25

TR-95

Poor

Over: TRIB BIG CREEK

2.75 MI S DAHLGREN, Hamilton, IL

Built 1909 Load: 4.2 t ADT: 75

GORENZ DR/TR 143

Poor

Over: TRIB TO SILVER CR

2.5 MI NW ALHAMBRA, Madison, IL

Built 1971 Load: 4.2 t ADT: 100

TR 370

Poor

Over: CREEK

0.5 MI E PRENTICE, Morgan, IL

Built 1900 Load: 4.2 t ADT: 50

TR 137A

Poor

Over: LOST CK

2MIS.E. HUEY, Clinton, IL

Built 1916 Load: 4.5 t ADT: 50

FAU-3818 Mack Road

Poor

Over: W Br DuPage River

0.2 MI E IL 59, DuPage, IL

Built 1954 Load: 4.5 t ADT: 2,200

TR 33

Poor

Over: BRUSH CRK.

1.2 M E OF VIRDEN, Macoupin, IL

Built 1954 Load: 4.5 t ADT: 100

TR 170

Poor

Over: MACOUPIN CRK

BEAVER DAM ST. PARK, Macoupin, IL

Built 1900 Load: 4.5 t ADT: 50

TR 46 (TH-S18)

Poor

Over: BR CROW CREEK

T13N-R9E-4PM SEC 2, Marshall, IL

Built 1930 Load: 4.5 t ADT: 25

TR 107

Poor

Over: WILBORN CREEK

4.3 MI SW BETHANY, Moultrie, IL

Built 1956 Load: 4.5 t ADT: 25

CH-7

Poor

Over: Cedar Creek

CTR-9-T11NR2W, Warren, IL

Built 1900 Load: 4.5 t ADT: 150

SEIL RD/COUNTY FAR

Poor

Over: DUPAGE RIVER

0.5 MI W I-55, Will, IL

Built 1982 Load: 4.5 t ADT: 5,750

TR 22

Poor

Over: TAR CK

1.8MI NE OAKFORD, Menard, IL

Built 1900 Load: 4.9 t ADT: 50

TR 78 A

Poor

Over: FLAT BRANCH

.1 MI S HUMBOLDT, Coles, IL

Built 1929 Load: 5.2 t ADT: 10

TR 178

Poor

Over: S HENDERSON CR

SW-22-T10NR4W, Henderson, IL

Built 1915 Load: 5.2 t ADT: 25

TR 488

Poor

Over: BRUSH CRK

1 MI NE VIRDEN, Macoupin, IL

Built 1955 Load: 5.2 t ADT: 200

SEVENTH AVENUE

Poor

Over: KYTE CREEK

ROCHELLE, Ogle, IL

Built 1966 Load: 5.2 t ADT: 1,600

TR 446 7.5 E

Poor

Over: WOLF CREEK

1.5 NE WILLIAMSVILLE, Sangamon, IL

Built 1900 Load: 5.2 t ADT: 125

TR 226

Poor

Over: TRIB OF SPRING CR

0.5 MI N OF DISCO, Hancock, IL

Built 1919 Load: 5.5 t ADT: 50

TR 327

Poor

Over: LOUIS CREEK

.5MI S 1W BUCKLEY, Iroquois, IL

Built 1966 Load: 5.5 t ADT: 100

SKUNK HOLLOW RD

Poor

Over: KICKAPOO CREEK TRIB

3 N .5 E LINCOLN, Logan, IL

Built 1900 Load: 5.5 t ADT: 50

8TH AV

Poor

Over: KEITH CREEK

0.05 MI E KISHWAUKEE, Winnebago, IL

Built 1919 Load: 5.5 t ADT: 375

TR 258

Poor

Over: LAKE FORK

2MI NW PANA, Christian, IL

Built 1898 Load: 5.8 t ADT: 10

TR 229

Poor

Over: MIDDLE CREEK

2 MI W OF MIDDLECR., Hancock, IL

Built 1961 Load: 5.8 t ADT: 75

TR-188

Poor

Over: CREEK

3.5 MI NE WALTONVILL, Jefferson, IL

Built 1909 Load: 5.8 t ADT: 125

TR 166

Poor

Over: COOP BR

2 MI N .5 MI E SHIPM, Macoupin, IL

Built 1917 Load: 5.8 t ADT: 100

TR 313

Poor

Over: RICHLAND CREEK

5 MI SW STRASBURG, Shelby, IL

Built 1967 Load: 5.8 t ADT: 75

TR-208

Poor

Over: LITTLE DRY FORK

5 MI N SIMS, Wayne, IL

Built 1930 Load: 5.8 t ADT: 10

SMITH RD

Poor

Over: LONG RUN CR.

0.3 MI SO 135TH ST, Will, IL

Built 1968 Load: 5.8 t ADT: 1,950

TR 144

Poor

Over: NORTH FORK

1.99 mi S FAS 1581, Brown, IL

Built 1900 Load: 6.2 t ADT: 25

LINCOLN ST

Poor

Over: North Shore Channel

0.5 M E GREEN BAYP6, Cook, IL

Built 1908 Load: 6.2 t ADT: 4,400

CARBON HILL RD CH3

Poor

Over: EAST FK MAZON RIVER

0.91 MI S OF FAS 289, Grundy, IL

Built 1977 Load: 6.2 t ADT: 1,550

FAS 174/CH 9

Poor

Over: PECUMSAGAN CREEK

E 12TH,N 3225, LaSalle, IL

Built 1962 Load: 6.2 t ADT: 150

PAULSEN RD

Poor

Over: N BR KISHWAUKEE RIV

1.7 MI S OF STREIT R, McHenry, IL

Built 1959 Load: 6.2 t ADT: 250

TR 165

Poor

Over: BN RR

3.0 MI W 0F BADER, Schuyler, IL

Built 1983 Load: 6.2 t ADT: 25

TR-223

Poor

Over: STINKING CREEK

4.5 MI WNW GRAYVILLE, Edwards, IL

Built 1909 Load: 6.5 t ADT: 25

MS 1160

Poor

Over: DRAINAGE DITCH

S edge Warsaw, Hancock, IL

Built 1920 Load: 6.5 t ADT: 125

TR-307

Poor

Over: FOX RIVER

3 MI NE SHAMROCK, Jasper, IL

Built 1909 Load: 6.5 t ADT: 75

Showing 25,701-25,750 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.