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 237

Good

Over: BIG SLOUGH

2 NW ST FRANCISVILLE, Lawrence, IL

Built 2011 Load: 32.4 t ADT: 100

TR 169

Good

Over: CREEK

1.5 MI W BRIDGEPORT, Lawrence, IL

Built 2014 Load: 32.4 t ADT: 50

CH 11

Good

Over: RACCOON CREEK

6 MI SW BRIDGEPORT, Lawrence, IL

Built 2014 Load: 32.4 t ADT: 50

TR-221

Good

Over: Trib to England Ditc

0.5 Miles W Billett, Lawrence, IL

Built 2018 Load: 32.4 t ADT: 20

TR-274

Good

Over: TAYLOR DRAINAGE DTCH

1 MI NW RUSSELLVILLE, Lawrence, IL

Built 1985 Load: 32.4 t ADT: 20

TR-50

Good

Over: TRIB RACCOON CREEK

3 MI SE SUMNER, Lawrence, IL

Built 1993 Load: 32.4 t ADT: 20

CH-17

Good

Over: DRAINAGE DITCH

3 MI SW RUSSELLVILLE, Lawrence, IL

Built 2005 Load: 32.4 t ADT: 300

TR 64

Good

Over: STREAM

1.35 MI E REDHILPK, Lawrence, IL

Built 1998 Load: 32.4 t ADT: 100

FAS 806 (CH 8)

Good

Over: STREAM

1 MI N BRIDGEPORT, Lawrence, IL

Built 1990 Load: 32.4 t ADT: 2,000

TR 257

Good

Over: Trib to Wabash River

IN Road E. of Wabash, Lawrence, IL

Built 2014 Load: 32.4 t ADT: 500

IL 26

Good

Over: GREEN CREEK

1.3 MI N BUREAU CO, Lee, IL

Built 1994 Load: 32.4 t ADT: 1,400

US ROUTE 52

Good

Over: DRAINAGE DITCH

1.4 M NW SUBLETTE, Lee, IL

Built 2002 Load: 32.4 t ADT: 2,800

LOWELL PARK RD

Good

Over: SEVEN MILE BRANCH

3 MI. N. OF DIXON, Lee, IL

Built 1994 Load: 32.4 t ADT: 2,450

HARMON RD

Good

Over: DRAINAGE DITCH

1 MI S ROCK ISLND RD, Lee, IL

Built 1997 Load: 32.4 t ADT: 325

CH 16 ROCK ISLAND

Good

Over: 3 MILE BRANCH

1 MI S OF NELSON, Lee, IL

Built 2005 Load: 32.4 t ADT: 2,300

CH 12-TAMPICO RD

Good

Over: GREEN RIV DRAINAGE

6.5 MI SW OF HARMON, Lee, IL

Built 2013 Load: 32.4 t ADT: 100

CH 12 MAYTOWN RD

Good

Over: GREEN RV DRAINAGE DI

2 MI W OF MAYTOWN, Lee, IL

Built 1996 Load: 32.4 t ADT: 150

CH 33 ROCKY FORD R

Good

Over: GREEN RIVER

0.7 MI SSW OF AMBOY, Lee, IL

Built 2006 Load: 32.4 t ADT: 500

CH 34/HAMILTON RD

Good

Over: COON CREEK

4 MI W OF HARMON, Lee, IL

Built 2015 Load: 32.4 t ADT: 375

TOWNLINE ROAD

Good

Over: DRAINAGE DITCH

2.2 M N OF PERRY RD, Lee, IL

Built 1982 Load: 32.4 t ADT: 125

PAW PAW RD

Good

Over: TRIB STEWARD CR

.02MI N OF PERRY RD, Lee, IL

Built 2007 Load: 32.4 t ADT: 50

SEARLS RD

Good

Over: TRIB OF GREEN RIVER

0.4 MI S OF SHAW RD, Lee, IL

Built 1962 Load: 32.4 t ADT: 150

LEWIS ROAD

Good

Over: TRIB OF GREEN RIVER

JUST EAST SEARLES RD, Lee, IL

Built 1988 Load: 32.4 t ADT: 75

STERLING RD

Good

Over: BR OF GREEN RIVER

.5 MI E. OF AMBOY, Lee, IL

Built 1998 Load: 32.4 t ADT: 350

CARNAHAN ROAD

Good

Over: BUREAU CREEK

1.3 MI N COUNTY LINE, Lee, IL

Built 1983 Load: 32.4 t ADT: 125

BROOKLYN ROAD

Good

Over: BUREAU CREEK

4 M S WEST BROOKLYN, Lee, IL

Built 1984 Load: 32.4 t ADT: 75

S. MERIDIAN RD

Good

Over: BR. OF GREEN RIVER

1 MI W WEST BROOKLYN, Lee, IL

Built 1993 Load: 32.4 t ADT: 25

HEDGE RD

Good

Over: TRIB 4-MILR GROVE CK

4 MI. S. OF COMPTON, Lee, IL

Built 1997 Load: 32.4 t ADT: 75

TOWER ROAD

Good

Over: BR OF BUREAU CREEK

2430 E 500N, Lee, IL

Built 2003 Load: 32.4 t ADT: 125

WHITNEY RD

Good

Over: FRANKLIN CREEK

.8 MI SE FRANKLIN GR, Lee, IL

Built 1999 Load: 32.4 t ADT: 150

ROGERS RD - TR 64

Good

Over: GREEN RIV TRIB

1.5 M N BUREAU CO LN, Lee, IL

Built 1987 Load: 32.4 t ADT: 25

PUMP FACTORY ROAD

Good

Over: GREEN RIVER TRIB.

2 MI N BUREAU CO LN, Lee, IL

Built 1988 Load: 32.4 t ADT: 25

TODD ROAD - TR 287

Good

Over: TRIB. OF GREEN RIVER

2.8 MI. E. OF IL 26, Lee, IL

Built 1990 Load: 32.4 t ADT: 25

SHEEHAN ROAD (TR 8

Good

Over: BRANCH GREEN RIVER

1.3 MI N BUREAU CO, Lee, IL

Built 1992 Load: 32.4 t ADT: 25

PEORIA RD

Good

Over: BR. OF BASS DITCH

850E 0020N, Lee, IL

Built 2001 Load: 32.4 t ADT: 25

GAME ROAD

Good

Over: GREEN RIVER TRIB

2.3 M N BUREAU CO L, Lee, IL

Built 1984 Load: 32.4 t ADT: 25

EAKLE ROAD

Good

Over: RED OAK DITCH

0.3 M N BUREAU CO L, Lee, IL

Built 1985 Load: 32.4 t ADT: 50

HAMILTON ROAD

Good

Over: WINNEBAGO DITCH

1.0 MI S ARCH ROAD, Lee, IL

Built 2002 Load: 32.4 t ADT: 100

TR 10 EAKLE ROAD

Good

Over: WINNEBAGO DITCH

5.5 MI SW OF HARMON, Lee, IL

Built 2012 Load: 32.4 t ADT: 75

LONG RD

Good

Over: FIVE MILE BRANCH

0.1 MI N OF PORTER R, Lee, IL

Built 1980 Load: 32.4 t ADT: 10

HOYLE RD.

Good

Over: FIVE MILE BRANCH

0.3 MI S US RTE 30, Lee, IL

Built 1981 Load: 32.4 t ADT: 10

SCHILPP RD

Good

Over: COON CREEK

2.0 M S OF US RT 30, Lee, IL

Built 1984 Load: 32.4 t ADT: 175

ATKINSON ROAD

Good

Over: FIVE MILE BRANCH

2 MI NE OF HARMON, Lee, IL

Built 1988 Load: 32.4 t ADT: 100

PORTER RD

Good

Over: FIVE MILE BRANCH

1 MI NW OF HARMON, Lee, IL

Built 1999 Load: 32.4 t ADT: 10

HOWLAND RD

Good

Over: HOWLAND CREEK

0280E 1100N, Lee, IL

Built 2000 Load: 32.4 t ADT: 10

LONG RD

Good

Over: HOWLAND CREEK

300E 1110N, Lee, IL

Built 2000 Load: 32.4 t ADT: 10

SCHILPP RD

Good

Over: FIVE MILE BRANCH

3MI NW OF HARMON, Lee, IL

Built 2006 Load: 32.4 t ADT: 250

TR-34 (Harmon Rd)

Good

Over: Ditch

2 MI S OF HARMON, Lee, IL

Built 2017 Load: 32.4 t ADT: 150

ISENBERG RD.-TR 18

Good

Over: TRIB. OF GREEN RIVER

.1 MI S MONTAVON RD, Lee, IL

Built 1990 Load: 32.4 t ADT: 25

GREEN WING RD

Good

Over: TRIB. OF GREEN RIVER

0.3 MI S. LEE CENTER, Lee, IL

Built 1998 Load: 32.4 t ADT: 275

Showing 18,701-18,750 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.