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 154

Good

Over: BIG GRAND PIERRE CR

2 MI SE HEROD, Pope, IL

Built 1998 Load: 32.4 t ADT: 75

TR 7

Good

Over: BAY CREEK

3.5 MI NW EDDYVILLE, Pope, IL

Built 1989 Load: 32.4 t ADT: 125

TR 88A

Good

Over: BAY CREEK

BROWNFIELD, Pope, IL

Built 1989 Load: 32.4 t ADT: 50

TR 45

Good

Over: HOBBS CREEK

NE1/4 SEC10 T12SR7E, Pope, IL

Built 1989 Load: 32.4 t ADT: 50

TR 45

Good

Over: TRIB TO HOBBS CR

NW1/4 SEC10 T12SR7E, Pope, IL

Built 1989 Load: 32.4 t ADT: 50

TR 45

Good

Over: GRAND PIERRE CREEK

SEC 9 T12S R7E, Pope, IL

Built 1990 Load: 32.4 t ADT: 50

FAS 930

Good

Over: FLICK BRANCH

7.5 MI SE EDDYVILLE, Pope, IL

Built 1990 Load: 32.4 t ADT: 650

TR 130

Good

Over: TRIB TO MILLER CREEK

1 MI N HOMBERG, Pope, IL

Built 1990 Load: 32.4 t ADT: 100

TR 38

Good

Over: BAY CREEK

2.5MI SE DIXON SPRGS, Pope, IL

Built 1993 Load: 32.4 t ADT: 50

TR 14

Good

Over: IL CENTRAL RR

NW CORNER POPE CO, Pope, IL

Built 1993 Load: 32.4 t ADT: 25

TR 115

Good

Over: ROOT LICK BRANCH

NW COR 26, T13S-R5E, Pope, IL

Built 1993 Load: 32.4 t ADT: 75

TR 9

Good

Over: LITTLE LUSK CREEK

4 MI W OF HEROD, Pope, IL

Built 1994 Load: 32.4 t ADT: 25

TR 152

Good

Over: SIMMONS CREEK TRIB

NE COR 36, T12S-R6E, Pope, IL

Built 1994 Load: 32.4 t ADT: 25

TR 140

Good

Over: DOG CREEK

4.1 MI SW BAY CITY, Pope, IL

Built 1997 Load: 32.4 t ADT: 25

TR 36

Good

Over: BEAR CREEK

1.1 MI W TEMPLE HILL, Pope, IL

Built 1998 Load: 32.4 t ADT: 10

TR 154

Good

Over: GIBBONS CREEK

1.6 M S IL 34, Pope, IL

Built 2001 Load: 32.4 t ADT: 75

TR 146

Good

Over: TRIB LITTLE LUSK CR

5 MI SW OF HEROD, Pope, IL

Built 1998 Load: 32.4 t ADT: 50

TR 78

Good

Over: WHITESIDE BRANCH

2 MI S OF EDDYVILLE, Pope, IL

Built 1999 Load: 32.4 t ADT: 125

TR 140

Good

Over: CANEY CREEK

1/2 MI SW BAY CITY, Pope, IL

Built 2001 Load: 32.4 t ADT: 25

TR 26

Good

Over: BEAR CREEK DITCH

1.25M N COUNTY LINE, Pope, IL

Built 2007 Load: 32.4 t ADT: 10

TR 150-COONHUNTER

Good

Over: TRIB TO LUSK CREEK

2 MI NW GOLCONDA, Pope, IL

Built 2000 Load: 32.4 t ADT: 100

TR 84

Good

Over: TRIB TO BAY CREEK

4 MI S BROWNSFIELD, Pope, IL

Built 2001 Load: 32.4 t ADT: 50

TR 78A

Good

Over: QUARREL CREEK

3.5 MI N. RTE 146, Pope, IL

Built 2003 Load: 32.4 t ADT: 75

TR 64

Good

Over: UNNAMED CREEK

0.9 MI S. RTE 146, Pope, IL

Built 2004 Load: 32.4 t ADT: 125

HEROD ROAD

Good

Over: TRIB TO HART CREEK

2MI SW OF HEROD, Pope, IL

Built 2007 Load: 32.4 t ADT: 50

KENNEL LA

Good

Over: HOBBS CREEK

1 MI NW OF EICHORN, Pope, IL

Built 2009 Load: 32.4 t ADT: 10

ROSEBUD RD

Good

Over: TRIB TO BAY CREEK DITCH

2MI SW HOMBERG, Pope, IL

Built 2022 Load: 32.4 t ADT: 50

NORVELL RD

Good

Over: WHITESIDE BRANCH

0.25 MI EAST IL 145, Pope, IL

Built 2015 Load: 32.4 t ADT: 25

POCO RD

Good

Over: ALCORN CREEK

MASSAC CO LINE, Pope, IL

Built 2015 Load: 32.4 t ADT: 10

TR 88A

Good

Over: TRIB TO FLAT LICK BR

1 MI N OF BROWNFIELD, Pope, IL

Built 1984 Load: 32.4 t ADT: 75

TR 137

Good

Over: UNNAMED STREAM

1 MI W OF HOMBERG, Pope, IL

Built 2012 Load: 32.4 t ADT: 50

DIXON SPGS PARK RO

Good

Over: SUGAR CREEK

N. OF SWIMMING POOL, Pope, IL

Built 2008 Load: 32.4 t ADT: 150

ILL 37 (FAP 726)

Good

Over: CACHE RIVER

AT ALEXANDER CO LINE, Pulaski, IL

Built 1953 Load: 32.4 t ADT: 1,400

TR 107

Good

Over: HODGES CREEK

1 MI.S.W. OF OLMSTED, Pulaski, IL

Built 1978 Load: 32.4 t ADT: 150

TR 70

Good

Over: BRIAR CREEK

3.5 MI N E PULASKI, Pulaski, IL

Built 1982 Load: 32.4 t ADT: 50

TR 129

Good

Over: TRIB TO CACHE CREEK

1 MI SW MOUNDS, Pulaski, IL

Built 1993 Load: 32.4 t ADT: 10

SHUMAKER ROAD

Good

Over: TRIB TO HESS BAYOU

2 MI WEST OF IL 37, Pulaski, IL

Built 2006 Load: 32.4 t ADT: 25

MORRIS RD

Good

Over: PULASKI SLOUGH

3 MI SW OF PULASKI, Pulaski, IL

Built 2009 Load: 32.4 t ADT: 25

TR 117

Good

Over: TRIB HESS BAYOU

3.0 MI SW OF OLMSTED, Pulaski, IL

Built 2003 Load: 32.4 t ADT: 25

LAKE ROAD

Good

Over: TRIB TO HESS BAYOU

0.48MI EAST OF IL 37, Pulaski, IL

Built 2007 Load: 32.4 t ADT: 25

TR 123 LAKE ROA

Good

Over: HESS BAYOU

3 MI NE MOUNDS, Pulaski, IL

Built 2012 Load: 32.4 t ADT: 25

TR-99 (PryorTownRd

Good

Over: Trib Hodges Creek

1 Mi E of I-57, Pulaski, IL

Built 2018 Load: 32.4 t ADT: 25

FAS 941 - CH 9

Good

Over: UNNAMED CREEK

1 MI W OF ULLIN, Pulaski, IL

Built 2015 Load: 32.4 t ADT: 1,050

OLMSTED RD

Good

Over: TRIB TO HODGES CREEK

0.70 MI WEST IL 37, Pulaski, IL

Built 2016 Load: 32.4 t ADT: 150

PRICE ROAD

Good

Over: UNNAMED CREEK

3.64 MI NE OF OLMSTEAD, Pulaski, IL

Built 2022 Load: 32.4 t ADT: 25

TR 55A

Good

Over: BR CLEAR CREEK

600N, 1210E, Putnam, IL

Built 1987 Load: 32.4 t ADT: 75

TR 47 A

Good

Over: SENACHWINE CR.

670 N, 235 E, Putnam, IL

Built 1991 Load: 32.4 t ADT: 550

TR 75

Good

Over: STREAM

2.5MI NNE MAGNOLIA, Putnam, IL

Built 1996 Load: 32.4 t ADT: 50

IL RTE 3

Good

Over: TRIB TO HORSE CREEK

0.14M NORTH OF RUMA, Randolph, IL

Built 1994 Load: 32.4 t ADT: 4,650

BLUFF RD/MODOC RD

Good

Over: CREEK

0.9MI W MODOC, Randolph, IL

Built 1996 Load: 32.4 t ADT: 400

Showing 20,201-20,250 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.