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

TWP RD 51

Poor

Over: GREEN RIVER

2.5 MI NE NEW BEDFOR, Bureau, IL

Built 1974 Load: 16.8 t ADT: 75

CH 4 - FAS 637

Poor

Over: BROWN BRANCH

4 MI. E STONINGTON, Christian, IL

Built 1965 Load: 16.8 t ADT: 600

FAU-1334 (HOWARD S

Poor

Over: N BR CHICAGO RIVER

0.3 M E HARLEM P13, Cook, IL

Built 1953 Load: 16.8 t ADT: 10,100

US 6

Poor

Over: TURNER CREEK

.39 MI W IL 84 (N), Henry, IL

Built 1938 Load: 16.8 t ADT: 4,550

CH 14

Poor

Over: SPRING CR. TRIB.

7 MI. S.W. ATKINSON, Henry, IL

Built 1914 Load: 16.8 t ADT: 200

TR 355

Poor

Over: MUD CREEK

1.5 MI NE ALPHA, Henry, IL

Built 1948 Load: 16.8 t ADT: 50

E MASSBACH ROAD

Poor

Over: SCRUB CREEK

6 M SE DERINDA CENTE, Jo Daviess, IL

Built 1940 Load: 16.8 t ADT: 225

FAS-39 (HUNTER ROA

Poor

Over: Little Beaver Creek

0.5 W WHITE OAKS RD, McHenry, IL

Built 1963 Load: 16.8 t ADT: 1,650

TR 100 (9.5W)

Poor

Over: SPRING CREEK

4.0 E BERLIN, Sangamon, IL

Built 1970 Load: 16.8 t ADT: 100

TR 104 (9W)

Poor

Over: PRAIRIE CREEK

1.0 NW FARMINGDALE, Sangamon, IL

Built 1971 Load: 16.8 t ADT: 100

TR 383 12.5 S

Poor

Over: S FORK LICK CREEK

3.5 S OF LOAMI, Sangamon, IL

Built 1967 Load: 16.8 t ADT: 75

GOEKE ROAD

Poor

Over: PINK CREEK

100FT N BRICK SCH RD, Winnebago, IL

Built 1999 Load: 16.8 t ADT: 75

CAPRON RD

Poor

Over: PISCASAW CREEK

2.5 MI S CAPRON, Boone, IL

Built 1958 Load: 17.2 t ADT: 150

TR 4A

Poor

Over: BAY CREEK

0.75M W BELLEVIEW, Calhoun, IL

Built 1930 Load: 17.2 t ADT: 25

CH 11

Poor

Over: HENDERSON CR

S.CTR-23-T12NR4W, Henderson, IL

Built 1978 Load: 17.2 t ADT: 50

CH 19

Poor

Over: S. EDWARDS RIVER

6 MI. S.W. CAMBRIDGE, Henry, IL

Built 1958 Load: 17.2 t ADT: 325

TR 46

Poor

Over: CAMP CREEK

.75 MI N LYNN CENTER, Henry, IL

Built 1965 Load: 17.2 t ADT: 275

TR 89

Poor

Over: PRAIRIE CR

1.7M W ILL49, Iroquois, IL

Built 1976 Load: 17.2 t ADT: 25

VAN DYKE RD

Poor

Over: E BRANCH AUXSABLE CK

2 MI W OF RIDGE RD, Kendall, IL

Built 1984 Load: 17.2 t ADT: 50

TR 122

Poor

Over: PRAIRIE CR

E 7TH N 580, LaSalle, IL

Built 1969 Load: 17.2 t ADT: 25

TR 496

Poor

Over: HORSE CRK.

4.5 E NILWOOD, Macoupin, IL

Built 1916 Load: 17.2 t ADT: 20

COUNTY LINE RD

Poor

Over: PISCASAW CREEK

2.5 MI SE OF CAPRON, McHenry, IL

Built 1959 Load: 17.2 t ADT: 475

MILL ROAD

Poor

Over: MILL CREEK

1.7 MI NW OF BYRON, Ogle, IL

Built 1980 Load: 17.2 t ADT: 600

TR 197 10.25 S

Poor

Over: SPRING CREEK

1.0 W OF RIDDLE HILL, Sangamon, IL

Built 1973 Load: 17.2 t ADT: 400

NELSON RD

Poor

Over: JACKSON CREEK

.4M N OF LARAWAY RD, Will, IL

Built 1977 Load: 17.2 t ADT: 2,950

CH3

Poor

Over: GILHAM CREEK

5.75M NW MULBERRY GR, Bond, IL

Built 1916 Load: 17.5 t ADT: 225

TOWNSHIP RD 97A

Poor

Over: W. BUREAU CR.

4 MI. W. OF KASBEER, Bureau, IL

Built 1949 Load: 17.5 t ADT: 125

TR 82C

Poor

Over: HICKORY CREEK

3.0 MI N SHEFFIELD, Bureau, IL

Built 1935 Load: 17.5 t ADT: 200

TR 34

Poor

Over: W FORK SPOON RIVER

3 MI S OF NEPONSET, Bureau, IL

Built 1965 Load: 17.5 t ADT: 25

CH 19

Poor

Over: STREAM

0.8 MI N SADORUS, Champaign, IL

Built 1940 Load: 17.5 t ADT: 625

TR 56/LAKE BRANCH

Poor

Over: LAKE BRANCH

2 MI NW BREESE, Clinton, IL

Built 1966 Load: 17.5 t ADT: 25

95TH ST

Poor

Over: Calumet River

3258 E.95TH STREET, Cook, IL

Built 1958 Load: 17.5 t ADT: 9,750

207TH STREET

Poor

Over: BUTTERFIELD CR

1.4 M E I57 P21, Cook, IL

Built 1964 Load: 17.5 t ADT: 2,450

17TH AV

Poor

Over: SILVER CREEK

100' S IL-64, Cook, IL

Built 1949 Load: 17.5 t ADT: 750

EMERSON ST

Poor

Over: WELLER CR

0.4 M N ILL 58 P5, Cook, IL

Built 1967 Load: 17.5 t ADT: 1,700

MS2080 WELLINGTON

Poor

Over: LAKE COSMAN

0.3 M N BISTERFD P5, Cook, IL

Built 1969 Load: 17.5 t ADT: 1,200

MS-2100 LEICESTER

Poor

Over: LAKE COSMAN

1.2 M N DEVON P5, Cook, IL

Built 1969 Load: 17.5 t ADT: 575

FAS 669(CH 7)

Poor

Over: BRUSHY FORK

2 MI SW OF NEWMAN, Douglas, IL

Built 1933 Load: 17.5 t ADT: 500

TIMBER LANE

Poor

Over: TRIB W. BR. DUPAGE R

0.34 MI E. FAIR OAKS, DuPage, IL

Built 1972 Load: 17.5 t ADT: 450

TR 188

Poor

Over: S BRANCH BROUILLETTS

0.75 MI S OF EDGAR, Edgar, IL

Built 1910 Load: 17.5 t ADT: 50

TR 61 A

Poor

Over: SALT FORK

1 MI NE SCOTTLAND, Edgar, IL

Built 1931 Load: 17.5 t ADT: 150

TR 58 MONA

Poor

Over: KELLY CREEK

3530N,1500E, Ford, IL

Built 1965 Load: 17.5 t ADT: 25

TR 2

Poor

Over: S BR BARKER CR

SW-7-T5NR1E, Fulton, IL

Built 1960 Load: 17.5 t ADT: 10

TR 442

Poor

Over: MUD CREEK

3.0 MI N KEWANEE, Henry, IL

Built 1920 Load: 17.5 t ADT: 75

TR 359

Poor

Over: TRIB TO PIGEON CR

3 MI SE CISSNA PARK, Iroquois, IL

Built 1925 Load: 17.5 t ADT: 75

TR 341

Poor

Over: GAY CREEK

2 MI W. ILL.RTE. 1, Iroquois, IL

Built 1967 Load: 17.5 t ADT: 25

ILL 3

Poor

Over: DRAINAGE DITCH

0.1M SE OF RADDLE RD, Jackson, IL

Built 1933 Load: 17.5 t ADT: 2,150

TR 187

Poor

Over: LITTLE PIASA CK

1.2 M SW NEW DELHI, Jersey, IL

Built 1972 Load: 17.5 t ADT: 500

E LORAN RD

Poor

Over: DAVIS CREEK

2MI E PLEASANT VALLY, Jo Daviess, IL

Built 1920 Load: 17.5 t ADT: 50

TOWNSHIP RD NO 158

Poor

Over: HELLS BRANCH

3 MI NE OF ELIZABETH, Jo Daviess, IL

Built 1916 Load: 17.5 t ADT: 25

Showing 26,001-26,050 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.