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

ILL 15 EB TO ILL 1

Good

Over: BR OF RICHLAND CR

W OF ILL 159, St. Clair, IL

Built 1967 Load: 97.2 t ADT: 6,000

US 20

Good

Over: PECATONICA RIV. TRIB

0.5 MI W TOWER ROAD, Stephenson, IL

Built 1985 Load: 97.2 t ADT: 7,300

SBI 1B (OLD RT 1)

Good

Over: CRAWFISH CREEK

3 MI N MT CARMEL, Wabash, IL

Built 2014 Load: 97.2 t ADT: 150

I 64

Good

Over: TRIB LITTLE WABASH R

4.5 MI W ILL-1, White, IL

Built 1975 Load: 97.2 t ADT: 12,200

I-88

Good

Over: DITCH

0.9 M W OF 098-0055, Whiteside, IL

Built 1975 Load: 97.2 t ADT: 12,500

I-88

Good

Over: DITCH

1 MI N OF ERIE, Whiteside, IL

Built 1975 Load: 97.2 t ADT: 13,100

US 6

Good

Over: NW Half Conveyor B

2.69 M E of IL 351, LaSalle, IL

Built 1985 Load: 99.9 t ADT: 9,050

TR 416

Poor

Over: MCKEE CRK

4.7 MI W KELLERVILLE, Adams, IL

Built 1905 ADT: 10

CH 11

Poor

Over: SOUTH FORKBEAR CREEK

3.96 MI N CAMP POINT, Adams, IL

Built 1975 ADT: 725

FAS 945

Poor

Over: CLEAR CREEK DITCH

2.5 MI E OF MCCLURE, Alexander, IL

Built 1959 ADT: 1,100

CH 4

Poor

Over: SPRING BRANCH

4.5M N KEYSPORT, Bond, IL

Built 1973 ADT: 50

TR-164

Poor

Over: Little Beaver Creek

2 MI S DUDLEYVILLE, Bond, IL

Built 1965 ADT: 50

TR 85

Poor

Over: MASTERS CREEK

3 MI SE OF OHIO, Bureau, IL

Built 1965 ADT: 25

TR 255

Poor

Over: EAST BUREAU CREEK

3.5 MI W HOLLOWAYVIL, Bureau, IL

Built 1970 ADT: 25

WALNUT STREET

Poor

Over: ROCKY RUN CREEK

CENTER OF TISKILWA, Bureau, IL

Built 1965 ADT: 75

FAS 755 (CH2)

Poor

Over: IRISH HOLLOW CREEK

STATE ST SOF WTR ST, Calhoun, IL

Built 1977 ADT: 225

TR-82 (Daggert Roa

Poor

Over: East Johnson Creek

3 MI S MT. CARROLL, Carroll, IL

Built 1916 ADT: 25

FREMONT ROAD

Poor

Over: ELKHORN CREEK

4MI NE MILLEDGEVILLE, Carroll, IL

Built 1966 ADT: 50

TR 143

Poor

Over: LITTLE INDIAN CR.

2 MI SW PHILADELPHIA, Cass, IL

Built 1975 ADT: 25

TR 178

Poor

Over: BIG DITCH

0.3 MI NW PROSPECT, Champaign, IL

Built 1974 ADT: 350

TR 13

Poor

Over: MOSQUITO CREEK

3 MI E MT AUBURN, Christian, IL

Built 1960 ADT: 100

TR 121

Poor

Over: BIG GEORGE BRANCH

6 N OF ASSUMPTION, Christian, IL

Built 1900 ADT: 20

TR 196 A

Poor

Over: LOCUST CREEK

2 MI W OWANECO, Christian, IL

Built 1954 ADT: 175

TR 221

Poor

Over: CLEAR CREEK

5 MI N MORRISONVILLE, Christian, IL

Built 1900 ADT: 20

TR 310

Poor

Over: WILLOW BRANCH

1MI N MOWEAQUA, Christian, IL

Built 1900 ADT: 50

TR 53A

Poor

Over: FLAT CREEK

.5 MI W HUMBOLDT, Coles, IL

Built 1909 ADT: 25

TR 135 D

Poor

Over: EMBARRAS R

3.0 MI NE CHARLESTON, Coles, IL

Built 1883 ADT: 50

Reynolds Drive

Poor

Over: EI RR

WEST SIDE CHARLESTON, Coles, IL

Built 1909 ADT: 500

FAU-1292 (E Lake A

Poor

Over: N Br Chicago River

1.1 M E ILL 43 P14, Cook, IL

Built 1935 ADT: 22,900

WASHINGTON BLVD

Poor

Over: DES PLAINES RIVER

1.3 M W IL 43, Cook, IL

Built 1956 ADT: 5,700

MEADOWBROOK

Poor

Over: SALT CREEK

2 E 53/.5 S 62 P5C, Cook, IL

Built 1978 ADT: 1,150

TR-5

Poor

Over: CREEK

3.5 MI SE FLAT ROCK, Crawford, IL

Built 1909 ADT: 50

TR-22

Poor

Over: WILLOW CREEK

3 MI N OBLONG, Crawford, IL

Built 1963 ADT: 50

CH 5(FAS 703)

Poor

Over: MUDDY CREEK

1.3 MI S JEWETT, Cumberland, IL

Built 1963 ADT: 300

TR 74

Poor

Over: LONG POINT CREEK

4.8 MI NW WAPELLA, De Witt, IL

Built 1931 ADT: 50

TR 151

Poor

Over: COON CREEK

1.5 MI E CLINTON, De Witt, IL

Built 1966 ADT: 350

NEW LEBANON RD

Poor

Over: COON CREEK

3130N 1800E, DeKalb, IL

Built 1964 ADT: 150

ANDERLAND ROAD

Poor

Over: N BR KISHWAUKEE RV

1675N 600E, DeKalb, IL

Built 1960 ADT: 100

WASHINGTON ST

Poor

Over: WEST BRANCH

WASH. ST. 1M S US 34, DuPage, IL

Built 1976 ADT: 13,700

LINCOLN AVE

Poor

Over: WINFIELD CRK

0.6 MI W N MAIN ST, DuPage, IL

Built 1971 ADT: 800

ARLINGTON Drive

Poor

Over: W BRANCH DUPAGE RIV

0.5M S US-20, DuPage, IL

Built 1971 ADT: 2,350

TR-112

Poor

Over: RACCOON CREEK

2.5 MI SW VANDALIA, Fayette, IL

Built 1940 ADT: 25

TR-173A

Poor

Over: HURRICANE CREEK

0.5 MI SE BINGHAM, Fayette, IL

Built 1909 ADT: 50

TR-51

Poor

Over: PINT CREEK

2 MI SE HERRICK, Fayette, IL

Built 1992 ADT: 50

FAS 452-CH 2

Poor

Over: COAL CREEK

W1/2-27-T8NR2E, Fulton, IL

Built 1953 ADT: 325

TR-91B VALERIO RD

Poor

Over: CLAYPOOL DR DITCH

.05 MI W WILL RD, Grundy, IL

Built 1916 ADT: 100

TR-167 SCULLY RD

Poor

Over: TRIB E FK MAZON RIV

.47 MI W CH-16, Grundy, IL

Built 1910 ADT: 50

TR 368

Poor

Over: LA HARPE CREEK

2.0 SE LAHARPE, Hancock, IL

Built 1909 ADT: 50

MIDDLE RD

Poor

Over: DRAINAGE DITCH

WARSAW, Hancock, IL

Built 1904 ADT: 150

4TH ST/MS 1020

Poor

Over: SPILLING CREEK

PONTOOSUC, Hancock, IL

Built 1900 ADT: 150

Showing 25,551-25,600 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.