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 65

Poor

Over: STREAM

NE COR-34-T25NR3W, Tazewell, IL

Built 1961 Load: 24.3 t ADT: 50

TR 156E

Poor

Over: STREAM

NE-1-T25NR4W, Tazewell, IL

Built 1967 Load: 24.3 t ADT: 1,450

TR 401

Poor

Over: STREAM

4.5 MI E GEORGETOWN, Vermilion, IL

Built 1900 Load: 24.3 t ADT: 50

HENDERSON AVE

Poor

Over: SPRING CR

0.25 MI N JACKSON ST, Will, IL

Built 1925 Load: 24.3 t ADT: 2,350

TR 201 A

Poor

Over: KASKASKIA DITCH

1.7 MI SE BONDVILLE, Champaign, IL

Built 1972 Load: 24.6 t ADT: 450

TR-398

Poor

Over: BRANCH LT WABASH RIV

7.5 MI SE CLAY CITY, Clay, IL

Built 1978 Load: 24.6 t ADT: 25

IL 1 (HALSTED ST

Poor

Over: RR - IHB

1.1 M N IL 83, Cook, IL

Built 1927 Load: 24.6 t ADT: 13,700

TR-7 (Aiport Road)

Poor

Over: W FORK NETTLE CREEK

0.21 MI E OF TR 28, Grundy, IL

Built 1979 Load: 24.6 t ADT: 125

FAS-807 (CH-6)

Poor

Over: LITTLE BONPAS CREEK

4 MI S SUMNER, Lawrence, IL

Built 1939 Load: 24.6 t ADT: 1,100

TR 218

Poor

Over: LOCAL DRAINAGE

2 E 2.5 MI S LAKE FK, Logan, IL

Built 1968 Load: 24.6 t ADT: 25

CTY HWY 8 (CH-C61)

Poor

Over: SENACHWINE CREEK

T13N-R8E-4PM SEC 36, Marshall, IL

Built 1969 Load: 24.6 t ADT: 150

NORTH UNION ROAD

Poor

Over: KISHWAUKEE RIVER

0.3 MI W OF IL 47, McHenry, IL

Built 1959 Load: 24.6 t ADT: 875

TR 490

Poor

Over: FLINT CREEK

SO C.L. VALLEY CITY, Pike, IL

Built 1986 Load: 24.6 t ADT: 50

TR-141 (FURROW RD)

Poor

Over: LOST CREEK

N.CTR-36-T24NR5W, Tazewell, IL

Built 1961 Load: 24.6 t ADT: 200

GENESEE COURT

Poor

Over: ROCK CREEK

SO EDGE OF MORRISON, Whiteside, IL

Built 1981 Load: 24.6 t ADT: 1,100

TR.118

Poor

Over: WALNUT CR

1500 EAST 525 NORTH, Woodford, IL

Built 1974 Load: 24.6 t ADT: 350

TR 235C

Poor

Over: COAL CREEK

3 MI E OF MINERAL, Bureau, IL

Built 1925 Load: 24.9 t ADT: 10

US 67 / IL 100

Poor

Over: ILLINOIS RIVER

W EDGE BEARDSTOWN, Cass, IL

Built 1955 Load: 24.9 t ADT: 5,600

TR 307

Poor

Over: WILLOW CREEK

1.5 SE MORRISONVILLE, Christian, IL

Built 1900 Load: 24.9 t ADT: 35

TR 225 A

Poor

Over: LITTLE WABASH RIVER

1.5 MI N PARADISE, Coles, IL

Built 1982 Load: 24.9 t ADT: 450

I-290 IKE,CONGRESS

Poor

Over: THRU POST OFFICE

0.3 M E I-90&94, Cook, IL

Built 1954 Load: 24.9 t ADT: 80,900

TR 99

Poor

Over: LA HARPE

4.5 MI S LAHARPE, Hancock, IL

Built 1974 Load: 24.9 t ADT: 50

TR 276

Poor

Over: COON CREEK

1.5 SE WOODLAND, Iroquois, IL

Built 1916 Load: 24.9 t ADT: 25

TR 44A

Poor

Over: TRIB LANGAN CREEK

5MI W CLIFTON N .25, Iroquois, IL

Built 1956 Load: 24.9 t ADT: 50

TR 351

Poor

Over: TRIB TO PIGEON CR

2.2 MI W. ILL RT 49, Iroquois, IL

Built 1961 Load: 24.9 t ADT: 25

FAS 1919-CH 30

Poor

Over: INDIAN CREEK

NE CORN.SEC10-10-1, Jackson, IL

Built 1982 Load: 24.9 t ADT: 1,300

MCCLURE ST

Poor

Over: CEDAR CREEK

SOUTH OF W. MAIN ST., Knox, IL

Built 1956 Load: 24.9 t ADT: 1,850

I-155 & RAMPS A &

Poor

Over: S FK PRAIRIE CREEK

.2M S US 136, Logan, IL

Built 1990 Load: 24.9 t ADT: 5,825

TR 2 B PIATT CO

Poor

Over: STREAM

3.8 MI NE OF OAKLEY, Macon, IL

Built 1964 Load: 24.9 t ADT: 75

FAU 9300

Poor

Over: CARR CREEK

0.1M S COLUMBIA, Monroe, IL

Built 1995 Load: 24.9 t ADT: 4,100

MS 6190 (CARL ST)

Poor

Over: CREEK

200' SO. OF IL 3, Monroe, IL

Built 1972 Load: 24.9 t ADT: 1,150

ILL 145

Poor

Over: BEAR CREEK DITCH

0.6 MI N MASSAC CO, Pope, IL

Built 1932 Load: 24.9 t ADT: 1,800

REIDER TR 222

Poor

Over: ENGEL CREEK

0.75 MI N US 50, St. Clair, IL

Built 1981 Load: 24.9 t ADT: 400

IL 29

Poor

Over: MACKINAW RIVER TRIB

0.25 MI N MACKINAW R, Tazewell, IL

Built 1963 Load: 24.9 t ADT: 2,250

CH 27

Poor

Over: WILLOW CREEK

3.5 MI NW NASHVILLE, Washington, IL

Built 1960 Load: 24.9 t ADT: 575

TR 102

Poor

Over: BR WILLIAMS CR

3.25 SE PLUM HILL, Washington, IL

Built 1920 Load: 24.9 t ADT: 50

CH 7

Poor

Over: BEAUCOUP CREEK

1.5 MI E OF POSEN, Washington, IL

Built 1977 Load: 24.9 t ADT: 150

TR 175

Poor

Over: PRAIRIE BRANCH

2 MI NE HOFFMANN, Clinton, IL

Built 1940 Load: 25.3 t ADT: 300

TR 198/LADUE ROAD

Poor

Over: COLES CREEK

.5 MI S. EAST FORK T, Clinton, IL

Built 1901 Load: 25.3 t ADT: 25

TR-229

Poor

Over: STINKING CREEK

7 MI W GRAYVILLE, Edwards, IL

Built 1977 Load: 25.3 t ADT: 50

CH 18 BUCKINGHAM R

Poor

Over: STREAM

3630N,1600E, Ford, IL

Built 1964 Load: 25.3 t ADT: 50

OWENS RD - TR 95

Poor

Over: BR COPPERAS CREEK

NE-1-T7NR4E, Fulton, IL

Built 1973 Load: 25.3 t ADT: 75

TR-7 (Airport Road

Poor

Over: EAST FORK NETTLE CR

0.65 MI W OF TR 86, Grundy, IL

Built 1980 Load: 25.3 t ADT: 225

FAS-1273 (DuPont R

Poor

Over: Waupecan Creek

0.4 MI W OF CH 7, Grundy, IL

Built 1957 Load: 25.3 t ADT: 1,400

RESERVATION/FAU251

Poor

Over: MORGAN CK

2 MI W OF CH 16, Kendall, IL

Built 1980 Load: 25.3 t ADT: 1,150

US 6

Poor

Over: N. KICKAPOO CR

8.39 MI E OF ILL 71, LaSalle, IL

Built 1980 Load: 25.3 t ADT: 2,850

FAS 1808/FR 550

Poor

Over: STREAM

JCT SBI-12 & US-50B, Lawrence, IL

Built 1925 Load: 25.3 t ADT: 25

MILLER RD

Poor

Over: GREEN RIVER TRIB

1.0 MI S OF US 30, Lee, IL

Built 1975 Load: 25.3 t ADT: 25

CH 37 SUGAR GROVE

Poor

Over: REID CREEK

1.0 MI S OGLE CO L, Lee, IL

Built 1961 Load: 25.3 t ADT: 175

TR 79B

Poor

Over: SOUTHERN PACIFIC RR

1990 E, 2400 N, Livingston, IL

Built 1988 Load: 25.3 t ADT: 150

Showing 26,601-26,650 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.