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-806

Fair

Over: WOLF PRAIRIE DITCH

6 MI S BRIDGEPORT, Lawrence, IL

Built 1955 Load: 21.7 t ADT: 750

FAS-807

Fair

Over: BRANCH LITTLE BONPAS

7 MI S SUMNER, Lawrence, IL

Built 1931 Load: 21.7 t ADT: 775

TR-104

Fair

Over: MUDDY CREEK

1 MI ENE PETROLIA, Lawrence, IL

Built 1967 Load: 21.7 t ADT: 75

MCGIRR RD

Fair

Over: FRANKLIN CREEK

0.8 MI E WHITNEY RD, Lee, IL

Built 1969 Load: 21.7 t ADT: 25

CO HWY 32 FAS 1348

Fair

Over: SHORT POINT CR

2 MI NW FLANAGAN, Livingston, IL

Built 1927 Load: 21.7 t ADT: 350

FAS 731

Fair

Over: SUGAR CREEK

2 MI. W. VIRDEN, Macoupin, IL

Built 1932 Load: 21.7 t ADT: 650

IL 37 (FAS 2826)

Fair

Over: RACCOON CREEK SOUTH

1.4 MI S ILL-161, Marion, IL

Built 1930 Load: 21.7 t ADT: 4,500

TR-107

Fair

Over: SKILLET FORK

2.5 MI E FORBES S P, Marion, IL

Built 1909 Load: 21.7 t ADT: 50

ILL 145

Fair

Over: BARNES CREEK

5.6 MI S POPE CO, Massac, IL

Built 1932 Load: 21.7 t ADT: 2,550

MARION ROAD

Fair

Over: BEAR CREEK

1 MI S BIG BAY, Massac, IL

Built 1968 Load: 21.7 t ADT: 75

TR 126

Fair

Over: DAVIS BAYOU

2.5 MI E OF US 45, Massac, IL

Built 1990 Load: 21.7 t ADT: 75

TR 105

Fair

Over: BOLIN BRANCH

4 MI NE SULLIVAN, Moultrie, IL

Built 1959 Load: 21.7 t ADT: 150

LANARK ROAD

Fair

Over: ELKHORN CREEK

5 MI. SW. FORRESTON, Ogle, IL

Built 1995 Load: 21.7 t ADT: 200

MERIDIAN RD

Fair

Over: BR. STILLMAN CREEK

4 MI S STILLMAN VAL., Ogle, IL

Built 1962 Load: 21.7 t ADT: 900

ILL 8

Fair

Over: NIXON RUN CREEK

4.75 MI W OF EDWARDS, Peoria, IL

Built 1995 Load: 21.7 t ADT: 1,850

TR 73

Fair

Over: BRANCH MCKEE CREEK

1.75 MI SW PERRY, Pike, IL

Built 1974 Load: 21.7 t ADT: 50

CH 2(FAS 650)

Fair

Over: WILBURN CREEK

4 MI N OF FINDLAY, Shelby, IL

Built 1967 Load: 21.7 t ADT: 450

W. STEPHENSON ST.

Fair

Over: BR OF YELLOW CREEK

5.0 MI W OF FREEPORT, Stephenson, IL

Built 1969 Load: 21.7 t ADT: 125

TR 430

Fair

Over: EAST BRANCH

4 MI NE ALVIN, Vermilion, IL

Built 1897 Load: 21.7 t ADT: 25

TR 7

Fair

Over: DUCK CR

SE-6-T12NR3W, Warren, IL

Built 1956 Load: 21.7 t ADT: 50

TR 140

Fair

Over: BR OF LOCUST CREEK

5 MI SW NASHVILLE, Washington, IL

Built 1915 Load: 21.7 t ADT: 75

MEREDOSIA ROAD

Fair

Over: DRAINAGE DITCH

2 MI SOUTH OF ALBANY, Whiteside, IL

Built 1956 Load: 21.7 t ADT: 250

I- 57

Fair

Over: ROCK CREEK

12.5 M S OF US 30, Will, IL

Built 1967 Load: 21.7 t ADT: 28,800

YALE BRIDGE RD

Fair

Over: SUGAR RIVER

1.7 MI E WHEELER RD, Winnebago, IL

Built 1953 Load: 21.7 t ADT: 325

CEMETERY ROAD

Fair

Over: UNAMD CREEK DITCH

2.64 MI E OF ILL 70, Winnebago, IL

Built 1954 Load: 21.7 t ADT: 575

FAS 585

Fair

Over: CAMP CRK

1 MI NO VERSAILLES, Brown, IL

Built 1936 Load: 22.0 t ADT: 250

S SUNSHINE ROAD

Fair

Over: EAGLE CREEK

2 MI NE MILLEDGEVILL, Carroll, IL

Built 1953 Load: 22.0 t ADT: 100

US 50

Fair

Over: SUGAR CREEK

3 MI E OF TRENTON, Clinton, IL

Built 1973 Load: 22.0 t ADT: 7,700

TR 5/KEYESPORT ROA

Fair

Over: BRANCH OF BEAVER CK

BOND CO LINE, Clinton, IL

Built 1948 Load: 22.0 t ADT: 375

TR 184A/CREEK ROAD

Fair

Over: PRAIRIE CREEK

.5 N.E. HOFFMAN, Clinton, IL

Built 1901 Load: 22.0 t ADT: 25

CH 4 (FAS 537)

Fair

Over: TRENKLE SLOUGH

.8 MI S FARMER CITY, De Witt, IL

Built 1968 Load: 22.0 t ADT: 1,200

CLINTON RD(FAS 684

Fair

Over: STREAM

E OF HUNTER, Edgar, IL

Built 1975 Load: 22.0 t ADT: 1,400

CH 8(FAS 679)

Fair

Over: WILLOW CREEK

.7 MI E OF HORACE, Edgar, IL

Built 1953 Load: 22.0 t ADT: 450

FAS-800

Fair

Over: LITTLE WABASH RIVER

0.5 MI S BLOOD, Edwards, IL

Built 1940 Load: 22.0 t ADT: 600

FAS-800

Fair

Over: CROOKED CREEK

1 MI E WEST SALEM, Edwards, IL

Built 1954 Load: 22.0 t ADT: 1,050

TOWNSHIP RD NO 273

Fair

Over: RUSH CREEK

4.5 MI SE HANOVER, Jo Daviess, IL

Built 1953 Load: 22.0 t ADT: 75

HANKES ROAD

Fair

Over: LAKE RUN CREEK

2.0 MI E SUGAR GROVE, Kane, IL

Built 1967 Load: 22.0 t ADT: 3,650

WHEELER RD

Fair

Over: EAST AUX SABLE CK

.5 MI E OF SCHLAPP R, Kendall, IL

Built 1970 Load: 22.0 t ADT: 125

TR-224

Fair

Over: EGG-BAG-CREEK

E 13TH N 1405, LaSalle, IL

Built 1968 Load: 22.0 t ADT: 10

CH 5 INLET RD

Fair

Over: BRANCH OF GREEN RIVE

2 MI N SHAW RD, Lee, IL

Built 1961 Load: 22.0 t ADT: 400

CO HWY 28 FAS 2055

Fair

Over: CREEK BAKER RUN

1.7 MI S OF CORNELL, Livingston, IL

Built 1953 Load: 22.0 t ADT: 200

TR 61

Fair

Over: INDIAN CREEK

1.5MI S DORSEY, Madison, IL

Built 1969 Load: 22.0 t ADT: 300

US 50

Fair

Over: Trib to Turkey Creek

1 MI E ODIN, Marion, IL

Built 1951 Load: 22.0 t ADT: 6,700

TR-38

Fair

Over: CROOKED CREEK

1 MI E CENTRAL CITY, Marion, IL

Built 1909 Load: 22.0 t ADT: 150

FAS 212-CH 9

Fair

Over: EDWARDS RIVER

SW.COR-8-T14NR4W, Mercer, IL

Built 1955 Load: 22.0 t ADT: 300

TR 278

Fair

Over: CAMP CREEK

SE-16-T15NR1W, Mercer, IL

Built 1900 Load: 22.0 t ADT: 375

PEEK HOME RD

Fair

Over: SEVEN MILE BR.

2.0 S.E. POLO, Ogle, IL

Built 1958 Load: 22.0 t ADT: 50

CONGER RD

Fair

Over: BRANCH MILL CR

3 MI NW BYRON, Ogle, IL

Built 1969 Load: 22.0 t ADT: 250

TR 351

Fair

Over: STREAM

LA PLACE, Piatt, IL

Built 1969 Load: 22.0 t ADT: 50

TR 259A

Fair

Over: BOYD DITCH

2.5MI W N CANTON, Pike, IL

Built 1900 Load: 22.0 t ADT: 25

Showing 4,801-4,850 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.