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

LAWRENCE AVE

Fair

Over: DES PLAINES RIVER

1 M E I-294, Cook, IL

Built 1994 Load: 29.5 t ADT: 18,800

18TH ST

Fair

Over: S BR CHICAGO RIVER

301 W 18TH ST, Cook, IL

Built 1967 Load: 29.5 t ADT: 5,650

I-90/I-90W to I-29

Fair

Over: Willow Creek

0.2 M E I294 P9, Cook, IL

Built 1958 Load: 29.5 t ADT: 103,500

LINDEN AVE

Fair

Over: N SHORE CHANNEL

WILMETTE, Cook, IL

Built 1909 Load: 29.5 t ADT: 2,300

FAI 57 SBL

Fair

Over: BIG FOUR DITCH

2.37 MI S OF ILL 9, Ford, IL

Built 1968 Load: 29.5 t ADT: 10,550

ILL 14

Fair

Over: STREAM W HAMILTON CO

4 MI W HAMILTON CO, Franklin, IL

Built 1953 Load: 29.5 t ADT: 1,500

FAS-428 (CH-11)

Fair

Over: BEAR CREEK

2.5 MI W OF BASCO, Hancock, IL

Built 1952 Load: 29.5 t ADT: 500

TR 331

Fair

Over: PIGEON CR

1.25 MI E SBI 49, Iroquois, IL

Built 1965 Load: 29.5 t ADT: 50

TR 77

Fair

Over: PRAIRIE CR

3 MI E. OF ASHKUM, Iroquois, IL

Built 1970 Load: 29.5 t ADT: 50

TR 31

Fair

Over: BEAVER CR

3 MI E BEAVERVILLE, Iroquois, IL

Built 1972 Load: 29.5 t ADT: 75

FAS 335 CH 10

Fair

Over: DRAINAGE DITCH

2.5 S 1.6 W CISNA P, Iroquois, IL

Built 1979 Load: 29.5 t ADT: 350

US 51

Fair

Over: CNIC RR

3 MI N OF DESOTO, Jackson, IL

Built 1983 Load: 29.5 t ADT: 5,150

TR 03

Fair

Over: ROCK CREEK

6.5 MI NW MANTENO, Kankakee, IL

Built 1966 Load: 29.5 t ADT: 50

TR 125

Fair

Over: MACON RIV

3 MI. S.E. REDDICK, Kankakee, IL

Built 1964 Load: 29.5 t ADT: 50

TR 209

Fair

Over: TOMAHAWK CR

N 3550 E 615, LaSalle, IL

Built 1959 Load: 29.5 t ADT: 50

TR 244

Fair

Over: BUCK CREEK

E 14TH N 3395, LaSalle, IL

Built 1964 Load: 29.5 t ADT: 125

TR 127

Fair

Over: LITTLE VERMILLION CR

N 4050 E 660, LaSalle, IL

Built 1972 Load: 29.5 t ADT: 25

FAS 1807 (US-50BUS

Fair

Over: EMBARRAS RIVER

.5MI E LAWRENCEVILLE, Lawrence, IL

Built 1977 Load: 29.5 t ADT: 5,400

CHURCH RD

Fair

Over: BUREAU CR

2.1 MI N LASALLE CO, Lee, IL

Built 1955 Load: 29.5 t ADT: 100

NAYLOR RD

Fair

Over: FRANKLIN CREEK

3.2 MI E OF ILL 2, Lee, IL

Built 1955 Load: 29.5 t ADT: 275

TR 22

Fair

Over: LONG POINT CREEK

2660 N, 450 E, Livingston, IL

Built 1965 Load: 29.5 t ADT: 75

TR 32

Fair

Over: SCATTERING POINT

1775 N, 600 E, Livingston, IL

Built 1927 Load: 29.5 t ADT: 75

TR 91

Fair

Over: DEER CK TRIB

3 N 1 MI W BEASON, Logan, IL

Built 1970 Load: 29.5 t ADT: 50

CH 13 SUMMERFIELD

Fair

Over: LITTLE SILVER CK

4.0 MI S ST JACOB, Madison, IL

Built 1969 Load: 29.5 t ADT: 275

TR 149 (TH-D18)

Fair

Over: S BRANCH CROW CR

T29N-R1E-3PM SEC 33, Marshall, IL

Built 1969 Load: 29.5 t ADT: 50

TR 140C (TH-S55)

Fair

Over: S BRANCH CROW CREEK

T29N RIE 3PM SEC 32, Marshall, IL

Built 1973 Load: 29.5 t ADT: 100

RIVER ROAD

Fair

Over: KISHWAUKEE R OVERFLO

0.8 MI W OF IL 23, McHenry, IL

Built 1928 Load: 29.5 t ADT: 2,250

FAS 1405-CH 12

Fair

Over: POPE CREEK

SW-35-T14NR1W, Mercer, IL

Built 1971 Load: 29.5 t ADT: 50

ILL 159

Fair

Over: BLACK CREEK

1.4 M N RED BUD, Monroe, IL

Built 1928 Load: 29.5 t ADT: 4,600

BL72/IL104/MORTON

Fair

Over: TOWN BROOK

1.2M W IL267-JACKSNV, Morgan, IL

Built 1952 Load: 29.5 t ADT: 16,300

COFFMAN RD

Fair

Over: MUD CREEK

2.5 MI N OF ADELINE, Ogle, IL

Built 1984 Load: 29.5 t ADT: 850

ADELINE RD

Fair

Over: S. BR. LEAF RIVER

S. EDGE OF ADELINE, Ogle, IL

Built 1998 Load: 29.5 t ADT: 425

TR 145

Fair

Over: DRAINAGE DITCH

3 MI NE BEMENT, Piatt, IL

Built 1961 Load: 29.5 t ADT: 50

OLD ILL 92

Fair

Over: DRAINAGE DITCH

.8 MI W OF I-88, Rock Island, IL

Built 1935 Load: 29.5 t ADT: 650

FAS 583

Fair

Over: LA MOINE R OVERFLOW

3.9 MI E CAMDEN, Schuyler, IL

Built 2001 Load: 29.5 t ADT: 1,000

CH 4

Fair

Over: SANDY CREEK

4.5 MI N MANCHESTER, Scott, IL

Built 1972 Load: 29.5 t ADT: 125

TR 0225

Fair

Over: BIG CREEK

.4MI.W. OF I-57, Union, IL

Built 1983 Load: 29.5 t ADT: 175

TR 206

Fair

Over: GLENBURN CREEK

2 MI NE OAKWOOD, Vermilion, IL

Built 1983 Load: 29.5 t ADT: 250

FAS-797

Fair

Over: ELM RIVER

0.2 MI N ENTERPRISE, Wayne, IL

Built 1969 Load: 29.5 t ADT: 1,000

I- 55 NB

Fair

Over: KANKAKEE RIVER

7.4 M S OF US 6, Will, IL

Built 1935 Load: 29.5 t ADT: 22,100

I 57 SB

Fair

Over: CACHE RIVER

PULASKI CO LINE, Alexander, IL

Built 1967 Load: 29.8 t ADT: 6,700

TR 16

Fair

Over: MILLER CREEK

0.2M E. OF THEBES, Alexander, IL

Built 1978 Load: 29.8 t ADT: 175

CH 18,FAS 777

Fair

Over: EAST BR SHOAL CREEK

5.50M N GREENVILLE, Bond, IL

Built 1976 Load: 29.8 t ADT: 200

TR 145

Fair

Over: SPOON RIVER

3.5 MI NE ST JOSEPH, Champaign, IL

Built 1973 Load: 29.8 t ADT: 150

TR 220

Fair

Over: E BRANCH EMBARRAS

4.2 MI S OF PHILO, Champaign, IL

Built 1974 Load: 29.8 t ADT: 75

IL 29

Fair

Over: LOCUST CREEK TRIB.

.25M SE MILLERSVILLE, Christian, IL

Built 1924 Load: 29.8 t ADT: 3,750

TR 18

Fair

Over: PRAIRIE FORK

0.5 M W MORRISONVILL, Christian, IL

Built 1964 Load: 29.8 t ADT: 200

US 40(FAS 1707)

Fair

Over: STREAM

1.4 MI W MARTINSVILL, Clark, IL

Built 1955 Load: 29.8 t ADT: 2,750

FAU 7702(CH 7)

Fair

Over: DRAINAGE DITCH

S OF MATTOON, Coles, IL

Built 1982 Load: 29.8 t ADT: 5,200

FAS 669(CH 3)

Fair

Over: HOG BRANCH CREEK

.1 MI N OF OAKLAND, Coles, IL

Built 1960 Load: 29.8 t ADT: 900

Showing 6,601-6,650 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.