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 303

Good

Over: SUGAR FK

1.5 MI N ST JACOB, Madison, IL

Built 1977 Load: 30.5 t ADT: 250

TR-335A

Good

Over: NICKOLSON CREEK

7 MI SE IUKA, Marion, IL

Built 1978 Load: 30.5 t ADT: 50

RAWSON BRIDGE ROAD

Good

Over: FOX RIVER

.8 MI W LAKE CO LINE, McHenry, IL

Built 1982 Load: 30.5 t ADT: 6,050

TR 568

Good

Over: BLUE RIDGE CREEK

BLLFLWR E LINE SEC 7, McLean, IL

Built 1980 Load: 30.5 t ADT: 50

TR 516

Good

Over: HENLINE CREEK

4.2 MI NNW COLFAX, McLean, IL

Built 1977 Load: 30.5 t ADT: 25

LINDEN/FAU 6405

Good

Over: SUGAR CR MAIN BRANCH

0.75 MI NE 150 & 51, McLean, IL

Built 1982 Load: 30.5 t ADT: 2,925

ILL 96

Good

Over: SIX MILE CREEK

1MI NW PLEASANT HILL, Pike, IL

Built 1993 Load: 30.5 t ADT: 1,550

TOWNSHIP ROAD 32

Good

Over: COPPERAS CREEK

2 MI SE ILL CITY, Rock Island, IL

Built 1970 Load: 30.5 t ADT: 50

S. ROCK CITY ROAD

Good

Over: STREAM

.3 MI S GERMAN VAL'Y, Stephenson, IL

Built 1931 Load: 30.5 t ADT: 1,000

FAS 405 - CH 1

Good

Over: HENDERSON CREEK

SW-18-T12NR2W, Warren, IL

Built 2004 Load: 30.5 t ADT: 900

BATES ROAD

Good

Over: GLEASON CREEK

0.8 MI S RT 75, Winnebago, IL

Built 1975 Load: 30.5 t ADT: 25

TR 123

Good

Over: BRUSH CREEK

1.5 MI. E. ARLINGTON, Bureau, IL

Built 1970 Load: 30.8 t ADT: 50

RIDGE AVENUE

Good

Over: CTA SKOKIE SWIFT

0.18 M N HOWARD, Cook, IL

Built 1995 Load: 30.8 t ADT: 14,100

SOMONAUK RD.(FAS96

Good

Over: SOMONAUK CREEK

500N. 1540E., DeKalb, IL

Built 2017 Load: 30.8 t ADT: 3,200

BASE LINE RD

Good

Over: S BR KISHWAUKEE RV

3000N 1240E, DeKalb, IL

Built 1965 Load: 30.8 t ADT: 1,550

FAS 669(CH 7)

Good

Over: STREAM

2.8 MI SW OF NEWMAN, Douglas, IL

Built 1912 Load: 30.8 t ADT: 500

MINOOKA RD TR-3B

Good

Over: SARATOGA CREEK

.71 MI W MIDDLE RD, Grundy, IL

Built 1975 Load: 30.8 t ADT: 300

FAS1335 CH42

Good

Over: TRIB LITTLE MUD CR

1.7MI N JCT CH 42+44, Iroquois, IL

Built 1963 Load: 30.8 t ADT: 150

TR 422

Good

Over: HOOPER BR

1.5 MI N CH 3, Iroquois, IL

Built 1957 Load: 30.8 t ADT: 25

CH 6

Good

Over: GRANARY CR

.2 MI W ESSEX, Kankakee, IL

Built 1948 Load: 30.8 t ADT: 675

TR 14B

Good

Over: STREAM

0.5 MI E CABERY, Kankakee, IL

Built 1981 Load: 30.8 t ADT: 50

I-94 (TRI STATE)

Good

Over: W.F.N. BR. CHI. RIV

1.3M S OF ILL 22, Lake, IL

Built 1958 Load: 30.8 t ADT: 82,800

TR-228

Good

Over: BEAVER POND DITCH

2 MI E LAWRENCEVILLE, Lawrence, IL

Built 1978 Load: 30.8 t ADT: 50

SHAW ROAD

Good

Over: BR. OF GREEN RIVER

6.5 MI E OF AMBOY, Lee, IL

Built 1955 Load: 30.8 t ADT: 650

MERIDIAN ROAD

Good

Over: BEACH CREEK

1.5 M S OGLE CO. L, Lee, IL

Built 1980 Load: 30.8 t ADT: 100

FAS 370 LONG PT RD

Good

Over: LONGPOINT CREEK

0.93 MI W OF IL 23, Livingston, IL

Built 1989 Load: 30.8 t ADT: 250

FAS-549A CH-20

Good

Over: Ditch

2 MI W OREANA, Macon, IL

Built 2007 Load: 30.8 t ADT: 1,350

TR 134

Good

Over: BEAR CR

2 MI NE CHESTERFIELD, Macoupin, IL

Built 1977 Load: 30.8 t ADT: 35

TR 41

Good

Over: MASON-TAZEWELL DITCH

3 E OF TOPEKA, Mason, IL

Built 1965 Load: 30.8 t ADT: 50

FREEPORT RD

Good

Over: BRANCH ELKHORN CR

5.5 MI SW FORRESTON, Ogle, IL

Built 1965 Load: 30.8 t ADT: 1,350

TR 28

Good

Over: WILLOW BRANCH

2 MI S ALLERTON PK, Piatt, IL

Built 1962 Load: 30.8 t ADT: 50

CH 10 FAS 603

Good

Over: BAY CREEK TRIBUTARY

3.90 MILE E. NEBO, Pike, IL

Built 1979 Load: 30.8 t ADT: 275

TR 100

Good

Over: BEAR BRANCH

3 MI E OF ILL 145, Pope, IL

Built 1940 Load: 30.8 t ADT: 25

N HARLEM CENTER RD

Good

Over: PRESTON CREEK

2.0 MI NW FREEPORT, Stephenson, IL

Built 1971 Load: 30.8 t ADT: 225

FAS 1926

Good

Over: CACHE RIVER TRIB

3.5M.E.COBDEN CL, Union, IL

Built 1968 Load: 30.8 t ADT: 600

FAS 926

Good

Over: CYPRESS CREEK

1.6 MI W.JOHNSON CO., Union, IL

Built 1978 Load: 30.8 t ADT: 500

FAS-811

Good

Over: DRAINAGE DITCH

1.75 MI S BELMONT, Wabash, IL

Built 1939 Load: 30.8 t ADT: 325

CH 13

Good

Over: S FORK SALINE RIVER

5 MI SOUTH MARION, Williamson, IL

Built 1968 Load: 30.8 t ADT: 1,600

TR 13

Good

Over: STREAM

5.2 MI NE FISHER, Champaign, IL

Built 1972 Load: 31.1 t ADT: 50

FAS 686

Good

Over: TRIB OF MILL CREEK

3.5 MI NW CLARKSVILL, Clark, IL

Built 1909 Load: 31.1 t ADT: 375

TR 134

Good

Over: COTTONWOOD CREEK

.5 MI W JEWETT, Cumberland, IL

Built 1967 Load: 31.1 t ADT: 125

TR-85

Good

Over: MOCCASIN CREEK

4 MI NNE ALTAMONT, Effingham, IL

Built 1978 Load: 31.1 t ADT: 100

US 67

Good

Over: LINK BRANCH

1 MI S CARROLLTON, Greene, IL

Built 1952 Load: 31.1 t ADT: 5,000

TR 300

Good

Over: LICK CREEK

0.6 MI SW ATHVILE, Greene, IL

Built 1987 Load: 31.1 t ADT: 50

TR 288

Good

Over: APPLE CREEK

2.3 MI NW ATHVLLE, Greene, IL

Built 1987 Load: 31.1 t ADT: 25

TR 2 LA SALLE RD

Good

Over: TRIB TO HOG RUN

0.31 MI S CH 6, Grundy, IL

Built 1987 Load: 31.1 t ADT: 50

TR180-STORM RD

Good

Over: E FORK MAZON RIVER

N OF STONEWALL RD, Grundy, IL

Built 1993 Load: 31.1 t ADT: 150

TR 292

Good

Over: BEAVER CR

.5 MI N PAPINEAU, Iroquois, IL

Built 1973 Load: 31.1 t ADT: 275

PEPLOW RD

Good

Over: TRIB VIRGIL DITCH 3

.5 MI N RAMM RD, Kane, IL

Built 2019 Load: 31.1 t ADT: 675

GALENA RD/FAU 2502

Good

Over: ROB ROY CREEK

AT ROUTE 47, Kendall, IL

Built 1964 Load: 31.1 t ADT: 6,400

Showing 15,001-15,050 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.