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 34

Good

Over: DRAINAGE DITCH

0.3 MI N HARRISBURG, Saline, IL

Built 2009 Load: 40.5 t ADT: 3,100

VETERANS/IL 4 (NB)

Good

Over: SPRING CREEK

.9M E IL29/WALNUT ST, Sangamon, IL

Built 1997 Load: 40.5 t ADT: 12,400

VETERANS/IL 4 (SB)

Good

Over: SPRING CREEK

.9M E IL29/WALNUT ST, Sangamon, IL

Built 1997 Load: 40.5 t ADT: 12,400

IL 29

Good

Over: CANTRALL CREEK TRIB.

S EDGE CANTRALL, Sangamon, IL

Built 1993 Load: 40.5 t ADT: 2,350

ILL 100

Good

Over: WALNUT CREEK

1.5MI N JCTIL100&106, Scott, IL

Built 1984 Load: 40.5 t ADT: 1,000

BUNKUM RD/FAU 9160

Good

Over: HARDING DITCH

1 MI E IL 111, St. Clair, IL

Built 2008 Load: 40.5 t ADT: 1,500

TR 140

Good

Over: BEAN CREEK

1 MI E OF POTOMAC, Vermilion, IL

Built 1987 Load: 40.5 t ADT: 50

FAP-855 (ILL-14)

Good

Over: STREAM

3.5 MI E ENFIELD JCT, White, IL

Built 1994 Load: 40.5 t ADT: 3,050

US 30

Good

Over: DEER CREEK

5.5 MI. E. MORRISON, Whiteside, IL

Built 2000 Load: 40.5 t ADT: 6,100

COUNTY LINE RD

Good

Over: DRESDEN COOLING LAKE

0.2 MI N LORENZO RD, Will, IL

Built 1971 Load: 40.5 t ADT: 1,250

MANHATTAN-MONEE RD

Good

Over: STREAM

2.8 MI E.CENTER RD, Will, IL

Built 1974 Load: 40.5 t ADT: 5,250

LAKE OF EGYPT RD

Good

Over: LAKE EGYPT SPILLWAY

6 MI S MARION, Williamson, IL

Built 1962 Load: 40.5 t ADT: 2,800

ROCKTON RD

Good

Over: ROCK RIVER

.4 MI W. OF ROCKTON, Winnebago, IL

Built 1990 Load: 40.5 t ADT: 2,200

SAMUELSON ROAD

Good

Over: UNNAMED DRAIN. DITCH

0.64 MI E OF 11TH ST, Winnebago, IL

Built 1977 Load: 40.5 t ADT: 3,000

CH 9 (FAS 580)

Good

Over: Mud Creek

1 MI W ARENZVILLE, Cass, IL

Built 2021 Load: 40.8 t ADT: 525

FAP 326 (IL 47)

Good

Over: SANGAMON RIVER

S OF MAHOMET, Champaign, IL

Built 2009 Load: 40.8 t ADT: 5,000

FAU 7138

Good

Over: COPPER SLOUGH

0.2 MI E OF I-57, Champaign, IL

Built 1970 Load: 40.8 t ADT: 8,250

FAP 824

Good

Over: Flat Branch

W. of Humboldt, Coles, IL

Built 2023 Load: 40.8 t ADT: 2,800

Broadway Avenue

Good

Over: Silver Creek

100’ S. of IL 64, Cook, IL

Built 2023 Load: 40.8 t ADT: 6,900

IL 116 FAP 681

Good

Over: DRAINAGE DITCH

3.3 MI E OF IL 115, Ford, IL

Built 2012 Load: 40.8 t ADT: 775

ILLINOIS 1

Good

Over: CANE CREEK

1 MI. SOUTH OF OMAHA, Gallatin, IL

Built 1978 Load: 40.8 t ADT: 1,400

TR 153

Good

Over: MILLRACE SLOUGH

2 MI NE OLD S'TOWN, Gallatin, IL

Built 1981 Load: 40.8 t ADT: 10

FAS 738

Good

Over: HURRICANE CREEK

1.5 MI E HILLVIEW, Greene, IL

Built 1940 Load: 40.8 t ADT: 400

IL 96

Good

Over: CRYSTAL CREEK

3.1M S US136,HAMILTN, Hancock, IL

Built 1994 Load: 40.8 t ADT: 1,900

TR 382-B

Good

Over: MUD CREEK

5.5 MI NW KEWANEE, Henry, IL

Built 1977 Load: 40.8 t ADT: 75

TR 51

Good

Over: BEAVER DITCH NO. 1

5.3 MI E MARTINTON, Iroquois, IL

Built 2023 Load: 40.8 t ADT: 75

TR 5

Good

Over: DRAINAGE DITCH

4.75 W,3.5 N CLIFTON, Iroquois, IL

Built 1987 Load: 40.8 t ADT: 50

TR 135 S APPLE RV

Good

Over: APPLE RIVER

1.5 M NW OF WOODBINE, Jo Daviess, IL

Built 2021 Load: 40.8 t ADT: 10

ILL 146

Good

Over: MCCORKLE CREEK

0.3 MI E. OF I-24, Johnson, IL

Built 1971 Load: 40.8 t ADT: 2,700

IL 31

Good

Over: FERSON CREEK OVERFLO

1.6 M N of IL 64, Kane, IL

Built 2016 Load: 40.8 t ADT: 11,700

US 20 & IL 47

Good

Over: TYLER CREEK

.12M S OF IL72 INTER, Kane, IL

Built 2014 Load: 40.8 t ADT: 21,400

WALKER ROAD

Good

Over: BURLINGTON CREEK

2 MI W HAMPSHIRE, Kane, IL

Built 2015 Load: 40.8 t ADT: 1,150

FAS-97 (W CL Road)

Good

Over: Union Dr. Ditch #3

2 MI N. OF IL 38, Kane, IL

Built 2018 Load: 40.8 t ADT: 2,050

I-88 E-W TOLL RD.

Good

Over: CREEK

.8 M W DUPAGE CO., Kane, IL

Built 1958 Load: 40.8 t ADT: 50,100

CH 15 INDIAN HEAD

Good

Over: GREEN RIVER RD

7.5MI W OF HARMON, Lee, IL

Built 2013 Load: 40.8 t ADT: 300

US RTE 24

Good

Over: STREAM

E EDGE OF CHATSWORTH, Livingston, IL

Built 1995 Load: 40.8 t ADT: 2,150

IL 17

Good

Over: Drainage Ditch

3.4 MI E OF 17 & 23, Livingston, IL

Built 2023 Load: 40.8 t ADT: 525

TR 125

Good

Over: ROOKS CREEK

935 E, 1800 N, Livingston, IL

Built 1977 Load: 40.8 t ADT: 125

TR 108 (1300E)

Good

Over: TRIB BAKER RUN

2180 N, 1300 E, Livingston, IL

Built 2019 Load: 40.8 t ADT: 200

TR 118

Good

Over: MUD CREEK

2695 N, 1400 E, Livingston, IL

Built 2021 Load: 40.8 t ADT: 25

TR-196

Good

Over: SALT CR TRIB

2.5 NW MT PLKSKY, Logan, IL

Built 2006 Load: 40.8 t ADT: 100

FAU 7464 (IL 48)

Good

Over: STREAM

1 MI S OREANA, Macon, IL

Built 2013 Load: 40.8 t ADT: 3,300

FAU 7426 (TAYLOR R

Good

Over: WARD BRANCH

0.64 MI S OF IL 48, Macon, IL

Built 2020 Load: 40.8 t ADT: 1,500

ILL 4

Good

Over: HURRICANE CREEK

4.2MI N CARLINVILLE, Macoupin, IL

Built 1997 Load: 40.8 t ADT: 2,900

IL 255 SB

Good

Over: UPRR

4 mi N of I-270, Madison, IL

Built 1995 Load: 40.8 t ADT: 28,300

IL 140

Good

Over: E Fork Silver Creek

0.5mi E of IL 160, Madison, IL

Built 2012 Load: 40.8 t ADT: 1,700

US 51 NB (FAP 322)

Good

Over: CROOKED CREEK

N OF CENTRAL CITY, Marion, IL

Built 1982 Load: 40.8 t ADT: 4,050

TR-1

Good

Over: WEBSTER CREEK

4 MI W WALNUT HILL, Marion, IL

Built 1982 Load: 40.8 t ADT: 225

TR 13(TH-C 55)

Good

Over: SCHOLES BRANCH

T13N-R8E-4PM SEC 12, Marshall, IL

Built 1992 Load: 40.8 t ADT: 50

US 45-FAP 889

Good

Over: MASSAC CREEK

1.5 MI W I-24, Massac, IL

Built 1999 Load: 40.8 t ADT: 12,800

Showing 23,551-23,600 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.