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%.

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.

All Bridges in Illinois

GLEN LAKE DR

Fair

Over: WILLOW CR

0.1 M W RIVER RD P9, Cook, IL

Built 1969 Load: 25.9 t ADT: 950

CH 24

Fair

Over: TRIB MUDDY CREEK

2 MI SE OF TOLEDO, Cumberland, IL

Built 1922 Load: 25.9 t ADT: 375

TR 7 B

Fair

Over: MUDDY CREEK

1.5 MI E OF TRILLA, Cumberland, IL

Built 1949 Load: 25.9 t ADT: 150

HOWISON RD

Fair

Over: BR LITTLE ROCK CREEK

1120N 1200E, DeKalb, IL

Built 1954 Load: 25.9 t ADT: 275

CH 9

Fair

Over: ARCOLA #4 DITCH

2.3 MI N OF FILSON, Douglas, IL

Built 1935 Load: 25.9 t ADT: 150

YACKLEY AVE

Fair

Over: ROTT CREEK

0.4M.S.OF OGDEN AVE., DuPage, IL

Built 1967 Load: 25.9 t ADT: 10,150

LEE AVE

Fair

Over: ST. JOSEPH CREEK

400 FT S BN RR, DuPage, IL

Built 1961 Load: 25.9 t ADT: 600

BROOKBANK AVE

Fair

Over: ST.JOSEPH CREEK

.1 MI S B N RR, DuPage, IL

Built 1961 Load: 25.9 t ADT: 50

JORIE BLVD

Fair

Over: GINGER CREEK

.4 MI N 31ST STREET, DuPage, IL

Built 1973 Load: 25.9 t ADT: 4,700

IL 1 US 150(FAP 33

Fair

Over: S FORK BROUILLETTS C

6.0 MI N OF PARIS, Edgar, IL

Built 1952 Load: 25.9 t ADT: 3,100

TR 31

Fair

Over: SALT FORK

2.5 MI N SCOTTLAND, Edgar, IL

Built 1900 Load: 25.9 t ADT: 50

FAS-1711 (CH-21)

Fair

Over: SALT CREEK

1 MI E POLICE STA, Effingham, IL

Built 1962 Load: 25.9 t ADT: 1,550

TR-268

Fair

Over: BRUSH CREEK

3 MI SE EFFINGHAM, Effingham, IL

Built 1909 Load: 25.9 t ADT: 250

TR-288

Fair

Over: FIRST SALT CREEK

NE CORNER TEUTOPOLIS, Effingham, IL

Built 1969 Load: 25.9 t ADT: 650

FAS-711 (CH 25)

Fair

Over: NW BR FULFER CREEK

5 MI S ALTAMONT, Effingham, IL

Built 1938 Load: 25.9 t ADT: 1,350

FAS 1707 (US-40)

Fair

Over: STREAM

MP 22.68, Effingham, IL

Built 1909 Load: 25.9 t ADT: 3,950

TR-347

Fair

Over: TRIB HURRICANE CREEK

3 MI W VANDALIA, Fayette, IL

Built 1915 Load: 25.9 t ADT: 20

TR-371

Fair

Over: TRIB HURRICANE CREEK

3 MI W VANDALIA, Fayette, IL

Built 1932 Load: 25.9 t ADT: 150

TR-511

Fair

Over: TRIB LONE GROVE BR

1 MI N ST PETER, Fayette, IL

Built 1935 Load: 25.9 t ADT: 50

TR-516

Fair

Over: TRIB HICKORY CREEK

3 MI SSE ST ELMO, Fayette, IL

Built 1969 Load: 25.9 t ADT: 50

TR-168

Fair

Over: FISH LAKE DITCH

2.7 MI S VANDALIA, Fayette, IL

Built 1979 Load: 25.9 t ADT: 25

MONROE STREET 3100

Fair

Over: CREEK

FARINA, Fayette, IL

Built 1909 Load: 25.9 t ADT: 275

TR 48A BRENTON

Fair

Over: STREAM

1300E 1980N, Ford, IL

Built 1962 Load: 25.9 t ADT: 25

FAS 1352 CH 17

Fair

Over: STREAM

200N,1980E, Ford, IL

Built 1961 Load: 25.9 t ADT: 900

TR 62

Fair

Over: DRAINAGE DITCH

1700E, 80N, Ford, IL

Built 1997 Load: 25.9 t ADT: 25

TR 265

Fair

Over: MIDDLE FORK CREEK

TR 265 OV MID FK CK, Franklin, IL

Built 1900 Load: 25.9 t ADT: 25

FAU 9489 WATER PL

Fair

Over: EWING CR

DEERING RD, Franklin, IL

Built 1954 Load: 25.9 t ADT: 1,600

TR-3

Fair

Over: GUN CREEK

1 MI S INA, Franklin, IL

Built 1970 Load: 25.9 t ADT: 250

CO HWY 18

Fair

Over: LA MOINE RIVER

3 MI E OF BURNSIDE, Hancock, IL

Built 1972 Load: 25.9 t ADT: 200

TR 36

Fair

Over: ROBINSON CREEK

2.0 MI NE NAUVOO, Hancock, IL

Built 1969 Load: 25.9 t ADT: 50

TR 45

Fair

Over: BRANCH OF ROCK CREEK

0.5 MI E OF ILL 1, Hardin, IL

Built 1978 Load: 25.9 t ADT: 50

TR 216

Fair

Over: OAT CREEK

2 MI SE GENESEO, Henry, IL

Built 1961 Load: 25.9 t ADT: 150

FAS 329 CH 10 SA 1

Fair

Over: FOUNTAIN CREEK

5.06 MI E OF ILL 49, Iroquois, IL

Built 1958 Load: 25.9 t ADT: 500

CH 9 FAS 334

Fair

Over: SPRING CR

1 MI E JCT CH9 US45, Iroquois, IL

Built 1952 Load: 25.9 t ADT: 500

TR 175B SEC 102

Fair

Over: PRAIRIE CREEK

.4MI E LAHOGUE, Iroquois, IL

Built 1955 Load: 25.9 t ADT: 75

FAS 2830 CH 13

Fair

Over: TRIB CASEY FORK

0.5 MI E NASON, Jefferson, IL

Built 1967 Load: 25.9 t ADT: 200

TR-79

Fair

Over: RAYSE CREEK

2 MI W CRAVAT, Jefferson, IL

Built 1961 Load: 25.9 t ADT: 25

FAS 830 (CH 8)

Fair

Over: BEAR CREEK

1 MI N BLUFORD, Jefferson, IL

Built 1974 Load: 25.9 t ADT: 1,250

TOWNSHIP ROAD NO.

Fair

Over: L. MENOMINEE RIV

1 MI NE MENOMINEE, Jo Daviess, IL

Built 1964 Load: 25.9 t ADT: 100

BRUNDIGE ROAD

Fair

Over: MILL CREEK

1.0 MI E LAFOX, Kane, IL

Built 1960 Load: 25.9 t ADT: 225

MEREDITH ROAD

Fair

Over: UNNAMED DRAINAGE DITCH

0.9 MI S OF IL 38, Kane, IL

Built 1983 Load: 25.9 t ADT: 1,950

MARSHALL BLVD

Fair

Over: INDIAN CREEK

.1 MI W FARNSWORTH, Kane, IL

Built 1950 Load: 25.9 t ADT: 650

TR 220

Fair

Over: FOREMAN CREEK

W.CTR-4-T12NR3E, Knox, IL

Built 1971 Load: 25.9 t ADT: 10

TR 114

Fair

Over: POPE CREEK

SW-4-T13NR2E, Knox, IL

Built 1900 Load: 25.9 t ADT: 25

LOSEY ST. GALESBUR

Fair

Over: CEDAR CREEK

1100 BLK E. LOSEY, Knox, IL

Built 1925 Load: 25.9 t ADT: 5,150

CO RD 32

Fair

Over: FOX RIVER

N 41ST,E 2475, LaSalle, IL

Built 1972 Load: 25.9 t ADT: 1,100

TR 87

Fair

Over: L VERMILLIAN CR

N 43RD E 810, LaSalle, IL

Built 1966 Load: 25.9 t ADT: 100

TR-145

Fair

Over: LITTLE INDIAN CREEK

N40E2060, LaSalle, IL

Built 1969 Load: 25.9 t ADT: 75

TR-157

Fair

Over: DRAINAGE DITCH

N 39TH E 190, LaSalle, IL

Built 1972 Load: 25.9 t ADT: 100

FAS-694

Fair

Over: BUGABOO CREEK

3 MI N SUMNER, Lawrence, IL

Built 1954 Load: 25.9 t ADT: 900

Showing 5,951-6,000 of 27,743 bridges

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.

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.