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

I-88 WB

Good

Over: STEWARD CR

AT OGLE CO LN, Lee, IL

Built 1974 Load: 47.6 t ADT: 8,050

ILL 23

Good

Over: VERMILLION RIVER

1.3 MI W OF CORNELL, Livingston, IL

Built 2004 Load: 47.6 t ADT: 1,400

IL 17 FAP 41

Good

Over: TRIB TO REDDICK RUN

7.7 MI E OF IL 47, Livingston, IL

Built 2010 Load: 47.6 t ADT: 1,850

IL 47

Good

Over: STREAM

4.46 M S IL 116, Livingston, IL

Built 1993 Load: 47.6 t ADT: 2,100

CH-10 (FAS 349)

Good

Over: Hickory Creek

1 MI N WESTON, Livingston, IL

Built 2010 Load: 47.6 t ADT: 1,150

TR 7

Good

Over: BRUSH CREEK

2MI NE VIRDEN, Macoupin, IL

Built 2005 Load: 47.6 t ADT: 300

ILL 157

Good

Over: SCHOOLHOUSE BRANCH

N JCT BELT 40 & 157, Madison, IL

Built 1933 Load: 47.6 t ADT: 15,000

US 51 (FAP 322)

Good

Over: FLAT CREEK

.4 MI S FAYETTE C L, Marion, IL

Built 1960 Load: 47.6 t ADT: 2,650

FAS 441 - CH 9

Good

Over: SUGAR CREEK

CTR-25-T4NR1W, McDonough, IL

Built 2020 Load: 47.6 t ADT: 575

IL RT 9

Good

Over: KINGS CREEK

3.6 MI E IL 122, McLean, IL

Built 2004 Load: 47.6 t ADT: 4,100

TR 45

Good

Over: N. CAMP CREEK

NE-23-T15NR3W, Mercer, IL

Built 2020 Load: 47.6 t ADT: 10

IL 127

Good

Over: UNION PACIFIC RR

.1M N IL 185, Montgomery, IL

Built 1990 Load: 47.6 t ADT: 6,300

CH 6

Good

Over: WALNUT CREEK

.05 MI N LYNNVILLE, Morgan, IL

Built 2013 Load: 47.6 t ADT: 375

TR 28

Good

Over: DITCH

4.25 MI S LAKE CITY, Moultrie, IL

Built 1988 Load: 47.6 t ADT: 20

CH 1 (FAS 049)

Good

Over: BRANCH OF MILL CREEK

3.5 MI NE LEAF RIVER, Ogle, IL

Built 2022 Load: 47.6 t ADT: 850

TR 36

Good

Over: COFFEE CREEK

1055N, 875E, Putnam, IL

Built 2022 Load: 47.6 t ADT: 100

FAS 1201 (CH 9)

Good

Over: COPPERAS CREEK

2.1 MI S EDGINGTON, Rock Island, IL

Built 2022 Load: 47.6 t ADT: 375

US 45-FAP 332

Good

Over: MIDDLE FORK SALINE R

N OF HARRISBURG, Saline, IL

Built 2004 Load: 47.6 t ADT: 10,200

FAI 72 EB

Good

Over: DRAINAGE DITCH

2.6MI W IL 100 INT, Scott, IL

Built 1986 Load: 47.6 t ADT: 4,950

ILL 106

Good

Over: SANDY CREEK

.5 MI E WINCHESTER, Scott, IL

Built 1990 Load: 47.6 t ADT: 1,700

CH 41

Good

Over: ROBINSON CREEK

0.6 MI S WESTERVELT, Shelby, IL

Built 2022 Load: 47.6 t ADT: 300

TR 7

Good

Over: SPOON RIVER

W.CTR-2-T14NR6E, Stark, IL

Built 1919 Load: 47.6 t ADT: 25

STATE LN RD(FAS104

Good

Over: INDIAN CREEK

2 MI. W. OF IL 73, Stephenson, IL

Built 1990 Load: 47.6 t ADT: 200

FAP-332 (ILL-1)

Good

Over: COFFEE CREEK

.75 MI NE KEENSBURG, Wabash, IL

Built 1996 Load: 47.6 t ADT: 2,400

FAP 332 (IL 1)

Good

Over: GREATHOUSE CREEK

SW EDGE MT CARMEL, Wabash, IL

Built 2014 Load: 47.6 t ADT: 3,450

IL 40

Good

Over: DRAINAGE DITCH

0.5 MI. S. OF I-88, Whiteside, IL

Built 1993 Load: 47.6 t ADT: 6,000

IL 7

Good

Over: RR - CSXT

0.65 M S OF I-80, Will, IL

Built 1968 Load: 47.6 t ADT: 11,100

IL 59, US 30

Good

Over: DU PAGE RIVER

0.3 M N IL 126, Will, IL

Built 2002 Load: 47.6 t ADT: 32,100

IL 148

Good

Over: WOLF CREEK

I MI N OF I-57, Williamson, IL

Built 2021 Load: 47.6 t ADT: 5,600

CH 52(WILLOW BROOK

Good

Over: BRANCH OF DRY CREEK

0.5 MI S ROCKTON RD, Winnebago, IL

Built 2004 Load: 47.6 t ADT: 5,650

ILL 336 SB

Good

Over: ROCK CREEK

2MI N I172/24 INT, Adams, IL

Built 1994 Load: 48.0 t ADT: 5,800

TR 130

Good

Over: SILVER CREEK

7 MI SE OF BUDA, Bureau, IL

Built 2022 Load: 48.0 t ADT: 75

IL 71

Good

Over: STREAM

0.1 MI E OF ILL 26S, Bureau, IL

Built 1968 Load: 48.0 t ADT: 3,400

TR 100B

Good

Over: Willow Creek Trib

1.5 Mi. N Moonshine, Clark, IL

Built 2019 Load: 48.0 t ADT: 100

US 20

Good

Over: RR - EJ&E

0.8M W NAPERVILLE RD, Cook, IL

Built 1933 Load: 48.0 t ADT: 39,500

US 20

Good

Over: W BR DU PAGE RIVER

0.18 M E Greenbrook, DuPage, IL

Built 2017 Load: 48.0 t ADT: 34,600

US 24/IL 100

Good

Over: SPOON RIV OVER FLOW

N OF DUNCAN MILLS, Fulton, IL

Built 2006 Load: 48.0 t ADT: 1,900

TR 136

Good

Over: Trib To Bear Creek

0.97 mi S of CH 11, Hancock, IL

Built 2018 Load: 48.0 t ADT: 75

TR 379

Good

Over: Whitney Slough

2.06 mi W FAS 1600, Hancock, IL

Built 2019 Load: 48.0 t ADT: 75

I 80

Good

Over: OAT CREEK

2 MI E OF ILL 82, Henry, IL

Built 1961 Load: 48.0 t ADT: 17,300

FAS-2869 (ILL-37)

Good

Over: Stream

Bonnie, Jefferson, IL

Built 2013 Load: 48.0 t ADT: 3,700

IL 47

Good

Over: VIRGIL DITCH #2

2.2 M N OF IL64, Kane, IL

Built 2013 Load: 48.0 t ADT: 6,850

IL 17

Good

Over: Granary Creek

1.25mi E of Essex Rd, Kankakee, IL

Built 2021 Load: 48.0 t ADT: 2,950

FAU 4000 ELDAMAIN

Good

Over: ROB ROY CREEK

1 M NW YORKVILLE, Kendall, IL

Built 2018 Load: 48.0 t ADT: 4,550

WB I-74

Good

Over: FRENCH CREEK

5 MI E SPOON RIVER, Knox, IL

Built 2020 Load: 48.0 t ADT: 7,700

EB I-74

Good

Over: FRENCH CREEK

5 MI E SPOON RIVER, Knox, IL

Built 2020 Load: 48.0 t ADT: 7,700

CH 33 FAS 1365

Good

Over: LITTLE VERMILION

N 33RD,E 415, LaSalle, IL

Built 2010 Load: 48.0 t ADT: 525

Marine Road-FAS 77

Good

Over: East Fork SILVER CRK

1.4 mi N. of US 40, Madison, IL

Built 1993 Load: 48.0 t ADT: 800

TR 130

Good

Over: BARNES CREEK

4.5M NE OF BROOKPORT, Massac, IL

Built 2005 Load: 48.0 t ADT: 25

RANDALL RD

Good

Over: CREEK

RANDALL RD AT, McHenry, IL

Built 1970 Load: 48.0 t ADT: 28,800

Showing 24,551-24,600 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.