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

TR 237

Fair

Over: DRAINAGE DITCH

3.5SE WOODLAND, Iroquois, IL

Built 1910 Load: 24.3 t ADT: 25

TR 2 D

Fair

Over: STREAM

0.2 Mi S of CR1400S, Iroquois, IL

Built 1953 Load: 24.3 t ADT: 75

TR 363A

Fair

Over: TRIB FOUNTAIN CR

3MI E FOUNTAIN CR, Iroquois, IL

Built 1937 Load: 24.3 t ADT: 125

HIGH SCHOOL ROAD

Fair

Over: STREAM

NW CORNER M'BORO, Jackson, IL

Built 1978 Load: 24.3 t ADT: 10

FAP-781 (ILL-33)

Fair

Over: N FORK EMBARRAS RV

JASPER-CRAWFORD C L, Jasper, IL

Built 1972 Load: 24.3 t ADT: 3,050

FAS-704

Fair

Over: WEST CROOKED CREEK

1 MI E ROSE HILL, Jasper, IL

Built 1965 Load: 24.3 t ADT: 375

FAS 2711 CH 10

Fair

Over: FOX RIVER

1.5 N.W. W LIBERTY, Jasper, IL

Built 1939 Load: 24.3 t ADT: 175

TR-201

Fair

Over: LAWS CREEK

3.5 MI W NEWTON, Jasper, IL

Built 1909 Load: 24.3 t ADT: 200

FAS 2708 CH 13

Fair

Over: EAST CROOKED CREEK

4.89 MI E HIDALGO, Jasper, IL

Built 1953 Load: 24.3 t ADT: 175

TR-266

Fair

Over: DRAINAGE DITCH

2.2 MI NW ST MARIE, Jasper, IL

Built 1909 Load: 24.3 t ADT: 50

FAS-707

Fair

Over: SANDY CREEK

1.4 MI E LATONA, Jasper, IL

Built 1909 Load: 24.3 t ADT: 400

TR-240

Fair

Over: DRAINAGE DITCH

2 MI NW STE MARIE, Jasper, IL

Built 1909 Load: 24.3 t ADT: 50

TR-492

Fair

Over: PUNCHEON CREEK

2.5 MI NNW BLUFORD, Jefferson, IL

Built 1909 Load: 24.3 t ADT: 100

TR 90-C

Fair

Over: A STREAM

SEC 12 T6N R13W, Jersey, IL

Built 1960 Load: 24.3 t ADT: 275

SO.ELMOVILLE ROAD

Fair

Over: N FORK PLUM RIVER

6 MILES S STOCKTON, Jo Daviess, IL

Built 1934 Load: 24.3 t ADT: 50

GROEZINGER ROAD

Fair

Over: PLUM RIVER

5 MI S STOCKTON, Jo Daviess, IL

Built 1927 Load: 24.3 t ADT: 75

TOWNSHIP ROAD NO.

Fair

Over: MENOMINEE RIVER

3M NW OF MENOMINEE, Jo Daviess, IL

Built 1925 Load: 24.3 t ADT: 50

TOWNSHIP ROAD NO.

Fair

Over: IRISH HOLLOW CREEK

5 MI W ELIZABETH, Jo Daviess, IL

Built 1922 Load: 24.3 t ADT: 75

TOWNSHIP ROAD NO 8

Fair

Over: SNIPE HOLLOW BR

2 MI NW ELIZABETH, Jo Daviess, IL

Built 1920 Load: 24.3 t ADT: 350

TOWNSHIP ROAD NO 1

Fair

Over: SNIPE HOLLOW BRANCH

2.5 MI NW ELIZABETH, Jo Daviess, IL

Built 1921 Load: 24.3 t ADT: 75

TOWNSHIP RD NO 216

Fair

Over: PLUM RIVER

2 M NW PLEASANT VLY, Jo Daviess, IL

Built 1926 Load: 24.3 t ADT: 100

TOWNSHIP RD NO 229

Fair

Over: DAVIS CREEK

3 MI NE PLEASANT VLY, Jo Daviess, IL

Built 1910 Load: 24.3 t ADT: 50

CH 15

Fair

Over: BR OF HELLS BR

5 MI N WOODBINE, Jo Daviess, IL

Built 1953 Load: 24.3 t ADT: 250

CH 17

Fair

Over: BR LITTLE RUSH CR

3 MI E HANOVER, Jo Daviess, IL

Built 1933 Load: 24.3 t ADT: 100

GALENA BLVD

Fair

Over: FOX RIVER, W CHANNEL

STOLP ISLAND, Kane, IL

Built 1926 Load: 24.3 t ADT: 11,200

GALENA BLVD

Fair

Over: FOX RIVER, E CHANNEL

STOLP ISLAND, Kane, IL

Built 1910 Load: 24.3 t ADT: 11,200

W. COUNTY LINE RD

Fair

Over: YOUNG'S CREEK

3.5 MI S MAPLE PARK, Kane, IL

Built 1931 Load: 24.3 t ADT: 2,500

BENTON STREET

Fair

Over: FOX RIVER E. BRANCH

300 FT W ILL RTE 25, Kane, IL

Built 1924 Load: 24.3 t ADT: 2,950

BENTON STREET

Fair

Over: FOX RIVER W. BRANCH

1200 FT W ILL RTE 25, Kane, IL

Built 1924 Load: 24.3 t ADT: 2,950

NORTH AV

Fair

Over: FOX RIVER

900 FT W ILL RTE 25, Kane, IL

Built 1926 Load: 24.3 t ADT: 6,650

CH 8

Fair

Over: EXLINE SL

.1 W ST. GEORGE, Kankakee, IL

Built 1955 Load: 24.3 t ADT: 1,900

CH 8

Fair

Over: FARR CR

1.4 MI E ST.GEORGE, Kankakee, IL

Built 1950 Load: 24.3 t ADT: 1,900

TR 186

Fair

Over: CANAVAN SLOUGH

0.75 MI SW WHITAKER, Kankakee, IL

Built 1960 Load: 24.3 t ADT: 50

CH 25

Fair

Over: REDDICK RUN

.8 MI E REDDICK, Kankakee, IL

Built 1956 Load: 24.3 t ADT: 300

Whitewillow Road

Fair

Over: Valley Run Creek

1.2 Mi W of 47, Kendall, IL

Built 1970 Load: 24.3 t ADT: 150

FAXON RD/MS 3210

Fair

Over: ROB ROY CK

1 MI W OF CANNONBALL, Kendall, IL

Built 1976 Load: 24.3 t ADT: 550

TR 51

Fair

Over: FOREMAN CREEK

NW-35-T13NRS3E, Knox, IL

Built 1900 Load: 24.3 t ADT: 75

TR 159

Fair

Over: CALDWELL CREEK

NW-3-T11NR4E, Knox, IL

Built 1900 Load: 24.3 t ADT: 25

OAK RUN ROAD

Fair

Over: TRIB TO SPOON LAKE

SE-34-T12NR3E, Knox, IL

Built 1970 Load: 24.3 t ADT: 500

OAK RUN ROAD-TR 50

Fair

Over: SPOON LAKE OVERFLOW

SE-11-T11NR3E, Knox, IL

Built 1970 Load: 24.3 t ADT: 375

COUNTY HIGHWAY 37

Fair

Over: TRIB.S.HENDERSON CRK

SE-18-T12NR1E, Knox, IL

Built 1900 Load: 24.3 t ADT: 350

Oak Knoll Road

Fair

Over: Flint Creek

.1M E of Ridge Rd., Lake, IL

Built 1926 Load: 24.3 t ADT: 225

PORT CLINTON RD.

Fair

Over: S.BR.INDIAN CREEK

1.5M W OF US 45, Lake, IL

Built 1956 Load: 24.3 t ADT: 1,150

TR-3

Fair

Over: INDIAN CREEK

N 48TH E 1210, LaSalle, IL

Built 1936 Load: 24.3 t ADT: 25

TR 332-A

Fair

Over: PRAIRIE CREEK

E 20TH N 1390, LaSalle, IL

Built 1938 Load: 24.3 t ADT: 25

TR 402

Fair

Over: WOLF CREEK

E 24TH N 1460, LaSalle, IL

Built 1946 Load: 24.3 t ADT: 50

TR 463

Fair

Over: TRIB VERMILION R

N 2053 RD E 1175, LaSalle, IL

Built 1924 Load: 24.3 t ADT: 75

TR-456

Fair

Over: NETTLE CREEK

E28TH N3135, LaSalle, IL

Built 1973 Load: 24.3 t ADT: 75

CO RD 5

Fair

Over: BR WOLF CREEK

1875 N 17TH, LaSalle, IL

Built 1940 Load: 24.3 t ADT: 1,150

TR 523

Fair

Over: OTTER CREEK

N 15TH E 2090, LaSalle, IL

Built 1952 Load: 24.3 t ADT: 400

Showing 5,351-5,400 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.