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

FAS-830 (CH-6)

Fair

Over: CREEK

2 MI S BELLE RIVE, Jefferson, IL

Built 1987 Load: 23.0 t ADT: 375

TOWNSHIP ROAD NO 9

Fair

Over: SMALLPOX CREEK

6 MI. E. OF GALENA, Jo Daviess, IL

Built 1960 Load: 23.0 t ADT: 50

CHICAGO RD

Fair

Over: MIDDLE AUXSABLE CK

.5 MI E OF GROVE RD, Kendall, IL

Built 1972 Load: 23.0 t ADT: 75

TR 7

Fair

Over: LITTLE INDIAN CREEK

N 48TH E 1801, LaSalle, IL

Built 1965 Load: 23.0 t ADT: 200

TR 75

Fair

Over: SHORT POINT CREEK

695E, 2400N, Livingston, IL

Built 1969 Load: 23.0 t ADT: 50

TR 235

Fair

Over: LAKE FORK CK TRIB

1 MI S LAKE FORK, Logan, IL

Built 1956 Load: 23.0 t ADT: 50

TR 30A(STRAWN RD)

Fair

Over: DRAINAGE DITCH

3.6 MI NW WARRENSBUR, Macon, IL

Built 1972 Load: 23.0 t ADT: 20

TR 73(W STRINGTOWN

Fair

Over: STREAM

3.25 MI NW NIANTIC, Macon, IL

Built 1963 Load: 23.0 t ADT: 25

TR 203

Fair

Over: CREEK

1 MI N CARLINVILLE, Macoupin, IL

Built 1899 Load: 23.0 t ADT: 275

NICHOLS RD

Fair

Over: NIPPERSINK CREEK

.2 MI NW HILLSIDE RD, McHenry, IL

Built 1953 Load: 23.0 t ADT: 600

TR 40

Fair

Over: BRANCH SUGAR CREEK

2.0 MI SW DANVERS, McLean, IL

Built 1967 Load: 23.0 t ADT: 75

TR 326

Fair

Over: MONEY CREEK

4.5 MI SW CLARKSVILL, McLean, IL

Built 1967 Load: 23.0 t ADT: 25

BUFFALO RD

Fair

Over: BR BUFFALO CREEK

3 MI SW POLO, Ogle, IL

Built 1973 Load: 23.0 t ADT: 25

OAK GROVE RD

Fair

Over: MIDDLE CREEK

4 MI NW BYRON, Ogle, IL

Built 1967 Load: 23.0 t ADT: 25

TR 403 13.5S

Fair

Over: S FORK LICK CREEK

6.0 SW OF LOAMI, Sangamon, IL

Built 1962 Load: 23.0 t ADT: 75

ILL 106

Fair

Over: SUGAR CREEK

W EDGE WINCHESTER, Scott, IL

Built 1953 Load: 23.0 t ADT: 2,200

Ramp to IL 3 SB "E

Fair

Over: Abandoned Southern RR

ABUT E-9 TO P-O17, St. Clair, IL

Built 1971 Load: 23.0 t ADT: 23,900

TOWN HALL RD/ TR 9

Fair

Over: WAELTI CR

3.5 MI W 59 ST, St. Clair, IL

Built 1971 Load: 23.0 t ADT: 375

E. ST. JAMES RD.

Fair

Over: BRUSH CREEK

3.5 MI. E. ILL RT.26, Stephenson, IL

Built 1960 Load: 23.0 t ADT: 75

TR 61B

Fair

Over: STREAM

E.CTR-28-T25NR3W, Tazewell, IL

Built 1963 Load: 23.0 t ADT: 1,350

TR 13

Fair

Over: FOUNTAIN CREEK BR

1.5 MI S EAST LYNN, Vermilion, IL

Built 1973 Load: 23.0 t ADT: 50

FAS-795

Fair

Over: DEER CREEK

CISNE, Wayne, IL

Built 1959 Load: 23.0 t ADT: 1,400

I-88 EB

Fair

Over: DEER CREEK

4 MI NE LYNDON, Whiteside, IL

Built 1974 Load: 23.0 t ADT: 6,300

I-88 WB

Fair

Over: DEER CREEK

4 MI NE LYNDON, Whiteside, IL

Built 1974 Load: 23.0 t ADT: 6,300

CAPP ROAD

Fair

Over: BR OF ELKHORN CREEK

5 MI N STERLING, Whiteside, IL

Built 1958 Load: 23.0 t ADT: 50

FAS 1348 CH 14

Fair

Over: DITCH MOLE CREEK

4 MI E MINONK, Woodford, IL

Built 1961 Load: 23.0 t ADT: 375

TR 271

Fair

Over: Rock Creek

75 N 1850 E, Woodford, IL

Built 1965 Load: 23.0 t ADT: 100

N MAPLE GROVE RD

Fair

Over: BR. STRADDLE CREEK

3.5 MI NE LANARK, Carroll, IL

Built 1971 Load: 23.3 t ADT: 50

US 67 / ILL 100

Fair

Over: INDIAN CREEK

6M S IL 125, Cass, IL

Built 1991 Load: 23.3 t ADT: 1,800

TR 290

Fair

Over: LAKE FORK

4.4 MI NNE PANA, Christian, IL

Built 1957 Load: 23.3 t ADT: 100

VOLLMER RD

Fair

Over: BUTTERFIELD CREEK

0.7M E. KEDZIE AV, Cook, IL

Built 1946 Load: 23.3 t ADT: 19,200

IL 64 FAP 17

Fair

Over: DRAINAGE DITCH

2.5 MI W SYCAMORE, DeKalb, IL

Built 1937 Load: 23.3 t ADT: 4,500

LELAND RD

Fair

Over: LITTLE INDIAN CREEK

745N 730E, DeKalb, IL

Built 1969 Load: 23.3 t ADT: 425

TR 220

Fair

Over: CLEAR CREEK

1.5 MI S OF NEVINS, Edgar, IL

Built 1970 Load: 23.3 t ADT: 225

TR 770

Fair

Over: COAL CREEK

SE-23-T8NR2E, Fulton, IL

Built 1954 Load: 23.3 t ADT: 75

SHELBY RD - TR 371

Fair

Over: LIT SISTER CR

NE-16-T5NR4E, Fulton, IL

Built 1966 Load: 23.3 t ADT: 75

TR-107

Fair

Over: BIG CREEK

6.8 MI S WAYNE CO LN, Hamilton, IL

Built 1941 Load: 23.3 t ADT: 10

TR 25

Fair

Over: HARRIS CREEK

NW Q SEC 15 T11S R9E, Hardin, IL

Built 1964 Load: 23.3 t ADT: 25

I-74 & 280

Fair

Over: DRAINAGE DITCH

2 MI E RI CO LINE, Henry, IL

Built 1962 Load: 23.3 t ADT: 15,000

FAS-704

Fair

Over: EMBARRAS RIVER

3 MI W ROSE HILL, Jasper, IL

Built 1964 Load: 23.3 t ADT: 250

FAS-2706 (CH-6)

Fair

Over: N FK EMBARRAS RIVER

2.5 MI SE YALE, Jasper, IL

Built 1964 Load: 23.3 t ADT: 100

TR-365

Fair

Over: BIG MUDDY RIVER

3.5 MI NE WALTONVILL, Jefferson, IL

Built 1977 Load: 23.3 t ADT: 100

CH 21/FAU 6219

Fair

Over: SPRING CR

1 MI E AROMA PARK, Kankakee, IL

Built 1957 Load: 23.3 t ADT: 700

TR 85

Fair

Over: CRANE CREEK

2.5 MI SW ESSEX, Kankakee, IL

Built 1972 Load: 23.3 t ADT: 150

TR 52A(BOODY RD)

Fair

Over: DRY BRANCH

3.5 MI SW MACON, Macon, IL

Built 1959 Load: 23.3 t ADT: 50

N RODGERS AV/TR 91

Fair

Over: BLACK CREEK

0.50 N BELTLINE, Madison, IL

Built 1969 Load: 23.3 t ADT: 1,050

US 50

Fair

Over: Brubaker Creek

2 MI E SALEM, Marion, IL

Built 1952 Load: 23.3 t ADT: 3,750

TR 150

Fair

Over: MASON TAZEWELL DITCH

0.5 MI SW FOREST CTY, Mason, IL

Built 1910 Load: 23.3 t ADT: 50

TR 194

Fair

Over: SLEEPY HOLLOW DITCH

4.5 MI SW MASON CITY, Mason, IL

Built 1972 Load: 23.3 t ADT: 25

TR 183

Fair

Over: LITTLE CROOKED CREEK

1.0 MI NW COOKSVILLE, McLean, IL

Built 1963 Load: 23.3 t ADT: 500

Showing 5,001-5,050 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.