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

I-88

Good

Over: STREAM

4.3 MI E OGLE CO LN, DeKalb, IL

Built 1972 Load: 29.8 t ADT: 24,000

TR 13 MONA

Good

Over: STREAM

1670E,3200N, Ford, IL

Built 1963 Load: 29.8 t ADT: 50

FAS 1875 MULKEYTWN

Good

Over: KING CREEK

MULKEY TOWN ROAD, Franklin, IL

Built 1975 Load: 29.8 t ADT: 175

TR 167

Good

Over: AKIN CREEK TRIB

W BOBTAIL RD, Franklin, IL

Built 2005 Load: 29.8 t ADT: 50

TR-160

Good

Over: SAND BRANCH

3 M SE CARROLLTON, Greene, IL

Built 1981 Load: 29.8 t ADT: 125

MINE RD TR-111

Good

Over: WAUPECON CR

.32 MI E GONNAM RD, Grundy, IL

Built 1979 Load: 29.8 t ADT: 75

TR 165 SCULLY RD

Good

Over: MURRAY RUN

.05 MI E SWELL RD, Grundy, IL

Built 1985 Load: 29.8 t ADT: 25

CH 23

Good

Over: TRIB LANGAN CREEK

35MI W CLIFTON, Iroquois, IL

Built 1976 Load: 29.8 t ADT: 350

FAI-57

Good

Over: S TRIB E BR KASK RVR

E OF KINMUNDY, Marion, IL

Built 1969 Load: 29.8 t ADT: 18,100

KEYSTONE ROAD

Good

Over: NIPPERSINK CR TRIB

0.9 MI S TRYON GROVE, McHenry, IL

Built 1990 Load: 29.8 t ADT: 1,300

TR 540

Good

Over: MACKINAW RIVER

SE EDGE COLFAX, McLean, IL

Built 1969 Load: 29.8 t ADT: 50

TR 116

Good

Over: DOUGLAS CREEK

S.CTR-25-T14NR4W, Mercer, IL

Built 2003 Load: 29.8 t ADT: 125

FAS 732

Good

Over: W BRANCH MACOUPIN CR

1 MI W FARMERSVILLE, Montgomery, IL

Built 1993 Load: 29.8 t ADT: 2,300

TR 170

Good

Over: CRABAPPLE CREEK

1.5 MI SW COLES, Moultrie, IL

Built 1980 Load: 29.8 t ADT: 50

TR 126

Good

Over: TRIB LAKE FORK

3.0 MI NW ATWOOD, Piatt, IL

Built 1957 Load: 29.8 t ADT: 25

BELL SCHOOL ROAD

Good

Over: KEITH CREEK

0.2 M N SPRING CR RD, Winnebago, IL

Built 1977 Load: 29.8 t ADT: 5,150

15TH STREET

Good

Over: KEITH CREEK

.2 MI S CHARLES ST, Winnebago, IL

Built 1996 Load: 29.8 t ADT: 600

TR 234

Good

Over: DRY FORK CREEK

5 MI E SILOAM SPRING, Brown, IL

Built 1974 Load: 30.1 t ADT: 50

CHICAGO AVE-CLARK

Good

Over: CTA SKOKIE SWIFT

0.18 M N HOWARD P6, Cook, IL

Built 1924 Load: 30.1 t ADT: 12,400

CH 9(FAS 655)

Good

Over: CLEAR CREEK

5. MI SE JANESVILLE, Cumberland, IL

Built 1975 Load: 30.1 t ADT: 350

FAP 71 (IL 54)

Good

Over: N FORK SALT CREEK

3 MI W OF DEWITT, De Witt, IL

Built 1976 Load: 30.1 t ADT: 1,650

GARY MILL RD

Good

Over: W BR DU PAGE RIVER

0.02 M E OF IL 59, DuPage, IL

Built 1988 Load: 30.1 t ADT: 5,600

GARY AV

Good

Over: WINFIELD CREEK

.83 MI SO OF GENEVA, DuPage, IL

Built 1999 Load: 30.1 t ADT: 10,200

01800 SECTION ST

Good

Over: DIETERICH CREEK

DIETERICH, Effingham, IL

Built 1969 Load: 30.1 t ADT: 375

FAS1346 CH5 LEHIGH

Good

Over: BIG FOUR DITCH TRIB

1490E, 100N, Ford, IL

Built 2008 Load: 30.1 t ADT: 100

FAS 892-GOLD HILL

Good

Over: STREAM

0.9 MI SO OF IL 13, Gallatin, IL

Built 1997 Load: 30.1 t ADT: 400

TR 353

Good

Over: WHISKEY CREEK

2.5E 1.5S CISNA PARK, Iroquois, IL

Built 1984 Load: 30.1 t ADT: 25

ILL 13

Good

Over: STREAM

EAST OF OLD RTE 13, Jackson, IL

Built 1954 Load: 30.1 t ADT: 21,600

DORTHELLA ST

Good

Over: PILES FORK

DORTHELLA CARBONDALE, Jackson, IL

Built 1964 Load: 30.1 t ADT: 325

FAS-1806 (ILL-250)

Good

Over: DUNLAP CREEK

.5 MI E BRIDGEPORT, Lawrence, IL

Built 1958 Load: 30.1 t ADT: 4,300

FAS-706 (CH-9)

Good

Over: TRIB SUGAR CREEK

2.5 MI SE PASSPORT, Richland, IL

Built 1987 Load: 30.1 t ADT: 425

US 45

Good

Over: MID FORK SALINE RIV.

NORTH OF HARRISBURG, Saline, IL

Built 1982 Load: 30.1 t ADT: 10,200

ILL 15

Good

Over: LITTLE MUD CREEK

E CL ST LIBORY, St. Clair, IL

Built 1936 Load: 30.1 t ADT: 1,850

ILL 127

Good

Over: CLEAR CREEK

3 MI SO OF ALTO PASS, Union, IL

Built 1989 Load: 30.1 t ADT: 1,350

CHER-OAK-WOOD LN

Good

Over: SPRING CREEK

0.1 MI N SPRINGBROOK, Winnebago, IL

Built 1966 Load: 30.1 t ADT: 425

FAS 2943

Good

Over: BROWNSVILLE CREEK

NW1/4 SEC14 T15S R3W, Alexander, IL

Built 1960 Load: 30.5 t ADT: 100

RIP RAP ROAD TR 2

Good

Over: THE SYN

RIP RAP CONSER. AREA, Calhoun, IL

Built 1988 Load: 30.5 t ADT: 50

TR 235 C

Good

Over: EMBARASS RIVER

4.0 MI NW PHILO, Champaign, IL

Built 1973 Load: 30.5 t ADT: 725

TR 235

Good

Over: EAST LAKE FORK DITCH

5.7 MI NW SADORUS, Champaign, IL

Built 1973 Load: 30.5 t ADT: 50

HARBOR DRIVE

Good

Over: PARKING GARAGE

200N & 430E, Cook, IL

Built 2006 Load: 30.5 t ADT: 2,850

LAPORTE AV

Good

Over: NATALIE CR

0.1 M S 151ST, Cook, IL

Built 1967 Load: 30.5 t ADT: 125

I-294 SB

Good

Over: CAL SAG CANAL

1 M SE ILL 50 P26, Cook, IL

Built 1958 Load: 30.5 t ADT: 66,750

Walnut Avenue

Good

Over: Prentiss Creek

0.3 Mi. N. Hobson Rd, DuPage, IL

Built 1986 Load: 30.5 t ADT: 1,300

TR 231 A

Good

Over: BROCKETT CREEK

4 MI SE ALTAMONT, Effingham, IL

Built 2009 Load: 30.5 t ADT: 175

TR 2

Good

Over: CREEK

2.25 MI E ST JAMES, Fayette, IL

Built 2008 Load: 30.5 t ADT: 150

Rend Lake Dam Road

Good

Over: Rend Lake Spillway

Rend Lake, Franklin, IL

Built 1971 Load: 30.5 t ADT: 2,180

TR 210

Good

Over: SOUTH EDWARDS RIVER

1 MI NW BISHOP HILL, Henry, IL

Built 1978 Load: 30.5 t ADT: 75

TR 178

Good

Over: STREAM

1.25 MI N L'ERABLE, Iroquois, IL

Built 1967 Load: 30.5 t ADT: 175

TR 173

Good

Over: HORSE CR E. BR.

1.5 MI SE OF HERSCHE, Kankakee, IL

Built 1974 Load: 30.5 t ADT: 50

FAS 351 CH 6

Good

Over: TRIB TO INDIAN CR

8 MI S FAIRBURY, Livingston, IL

Built 1981 Load: 30.5 t ADT: 250

Showing 14,951-15,000 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.