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

IL 5 / JOHN DEERE

Good

Over: STREAM

1MI E 70TH ST MOLINE, Rock Island, IL

Built 1999 Load: 32.4 t ADT: 11,600

IL 84

Good

Over: BARBER CREEK

S. EDGE PORT BYRON, Rock Island, IL

Built 1956 Load: 32.4 t ADT: 8,100

TOWNSHIP ROAD 96

Good

Over: MILL CREEK

2 MI SE TAYLOR RIDGE, Rock Island, IL

Built 1978 Load: 32.4 t ADT: 50

TOWNSHIP ROAD 6

Good

Over: COPPERAS CREEK

6 MI SW ILLINOIS CTY, Rock Island, IL

Built 1978 Load: 32.4 t ADT: 50

TOWNSHIP ROAD 151

Good

Over: N BR COPPERAS CREEK

5 MI N BUFFALO PRAIR, Rock Island, IL

Built 1978 Load: 32.4 t ADT: 25

TOWNSHIP ROAD 52

Good

Over: COPPERAS CREEK

4 M SW EDGINGTON, Rock Island, IL

Built 1981 Load: 32.4 t ADT: 25

TOWNSHIP ROAD 44

Good

Over: COPPERAS CREEK

2.5 M NE BUFFALO PRA, Rock Island, IL

Built 1981 Load: 32.4 t ADT: 25

63 STREET

Good

Over: BRANCH OF MILL CREEK

2.4 MI N OF SHERRARD, Rock Island, IL

Built 1983 Load: 32.4 t ADT: 775

TR 10-B

Good

Over: COPPERAS CREEK

3.1 M S OF IL RT 92, Rock Island, IL

Built 1983 Load: 32.4 t ADT: 10

TOWNSHIP ROAD 228

Good

Over: UNNAMED CREEK

4 M NW OF HILLSDALE, Rock Island, IL

Built 1984 Load: 32.4 t ADT: 25

TR 71

Good

Over: DRAINAGE DITCH

0.5 MI N OF BARSTOW, Rock Island, IL

Built 1985 Load: 32.4 t ADT: 75

85 TH AVE W

Good

Over: WARREN CREEK

3 MI W OF MILAN, Rock Island, IL

Built 1985 Load: 32.4 t ADT: 900

BARSTOW ROAD / CH

Good

Over: DRUNKARDS SLOUGH

1 MI E OF BARSTOW, Rock Island, IL

Built 1987 Load: 32.4 t ADT: 375

317TH STREET / CH

Good

Over: SANDER DRAIN DITCH

2 MI N OF HILLSDALE, Rock Island, IL

Built 1987 Load: 32.4 t ADT: 275

CH 60 (198TH ST)

Good

Over: N BR COPPERAS CREEK

3.5 MI SE ILL. CITY, Rock Island, IL

Built 1988 Load: 32.4 t ADT: 100

CH 64 (320TH ST)

Good

Over: CANOE CREEK

1.8 MI S HILLSDALE, Rock Island, IL

Built 1989 Load: 32.4 t ADT: 175

127 TH AVE(CH 55)

Good

Over: BR. OF MILL CREEK

4 MI SE OF MILAN, Rock Island, IL

Built 1992 Load: 32.4 t ADT: 600

175 TH ST (CH 54)

Good

Over: COPPERAS CREEK

5 MI. SW. EDGINGTON, Rock Island, IL

Built 1991 Load: 32.4 t ADT: 300

CH 60 (198TH ST W)

Good

Over: S BR COPPERAS CREEK

4 MI SE ILLINOIS CTY, Rock Island, IL

Built 1994 Load: 32.4 t ADT: 100

CH 60 (198TH ST W)

Good

Over: COPPERAS CREEK

4 MI SE ILLINOIS CTY, Rock Island, IL

Built 1994 Load: 32.4 t ADT: 100

134TH AVE (TR137)

Good

Over: COAL CREEK

3 MI. S. COAL VALLEY, Rock Island, IL

Built 1993 Load: 32.4 t ADT: 75

TR 14 (109TH AVE W

Good

Over: MONEY CREEK

3 MI NW ILLINOIS CTY, Rock Island, IL

Built 1994 Load: 32.4 t ADT: 75

162ND AVE

Good

Over: BR. CASE CREEK

0.2 MI W 104TH ST, Rock Island, IL

Built 1995 Load: 32.4 t ADT: 25

TR 46 (182ND ST W)

Good

Over: BR. COPPERAS CREEK

.86 MI. S. 134TH AVE, Rock Island, IL

Built 1996 Load: 32.4 t ADT: 50

81ST ST.

Good

Over: CASE CREEK

.25 MI. S. CH 67, Rock Island, IL

Built 1997 Load: 32.4 t

CH 72

Good

Over: CASE CREEK

2 MI SW COAL VALLEY, Rock Island, IL

Built 2000 Load: 32.4 t ADT: 300

TR 141

Good

Over: UNNAMED CREEK

3 MI SW ILL CITY, Rock Island, IL

Built 1999 Load: 32.4 t ADT: 25

154TH AVE

Good

Over: BRANCH-MILL CREEK

0.25 E. OF US 67, Rock Island, IL

Built 2002 Load: 32.4 t ADT: 25

TR 70 (119TH ST. W

Good

Over: COPPERAS CREEK

6 MI S. OF ANDALUSIA, Rock Island, IL

Built 2003 Load: 32.4 t ADT: 25

TR010

Good

Over: CREEK

0.73MI N 190 AV, Rock Island, IL

Built 2007 Load: 32.4 t ADT: 50

E 3RD AVE.(TR 87)

Good

Over: SCHAFFER CREEK

1 MI. E COAL VALLEY, Rock Island, IL

Built 2010 Load: 32.4 t

TR 236

Good

Over: UNNAMED CREEK

3 MI NW HILSDALE, Rock Island, IL

Built 2012 Load: 32.4 t ADT: 75

COUNTY HIGHWAY 18

Good

Over: MUD CREEK

7.0 MI S OF MILAN, Rock Island, IL

Built 1985 Load: 32.4 t ADT: 625

TR 22-A (238TH ST)

Good

Over: BR COPPERAS CREEK

2 MI S ILLINOIS CITY, Rock Island, IL

Built 1989 Load: 32.4 t ADT: 20

186TH ST. W. (TR 4

Good

Over: BR. COPPERAS CREEK

3 MI. W. EDGINGTON, Rock Island, IL

Built 1991 Load: 32.4 t ADT: 25

TR 52 / 170TH AVE

Good

Over: BR. COPPEREAS CREEK

1 MI. N. BUFFALO PR., Rock Island, IL

Built 1991 Load: 32.4 t ADT: 10

TR 137 (134TH AVE)

Good

Over: BRANCH COAL CREEK

3 MI. S. COAL VALLEY, Rock Island, IL

Built 1990 Load: 32.4 t ADT: 75

MAIN AVE-CORDOVA

Good

Over: UNNAMED STREAM

600 BLOCK OF MAIN AV, Rock Island, IL

Built 2007 Load: 32.4 t ADT: 475

52ND AVE

Good

Over: STREAM

.4 MI. E. 7TH STREET, Rock Island, IL

Built 1987 Load: 32.4 t ADT: 5,550

2ND AVE WEST

Good

Over: HILLS CREEK

W OF 2 ST-ANDALUSIA, Rock Island, IL

Built 1983 Load: 32.4 t ADT: 10

4TH AVE WEST

Good

Over: HILLS CREED

0.1 MI W OF 2ND ST, Rock Island, IL

Built 2002 Load: 32.4 t ADT: 450

TURKEY HOLLOW ROAD

Good

Over: TURKEY HOLLOW CREEK

3 MI E OF ANDALUSIA, Rock Island, IL

Built 2012 Load: 32.4 t ADT: 3,050

CH 32

Good

Over: SALINE RIVER

3 MI S OF ILL 13, Saline, IL

Built 1976 Load: 32.4 t ADT: 100

CH 3

Good

Over: RECTOR CREEK

3.75 MI. N ELDORADO, Saline, IL

Built 1977 Load: 32.4 t ADT: 50

TR 17

Good

Over: DRAINAGE DITCH

0.5 M W OF ILL 142, Saline, IL

Built 1977 Load: 32.4 t ADT: 25

FAS 902

Good

Over: EAGLE CREEK

5 M SW EQUALITY, Saline, IL

Built 1981 Load: 32.4 t ADT: 250

CH-5

Good

Over: S FORK SALINE RIVER

3.8 MI EAST ILL 34, Saline, IL

Built 1982 Load: 32.4 t ADT: 300

CH 16

Good

Over: S FORK SALINE RIVER

3 MI S CARRIER MILLS, Saline, IL

Built 1980 Load: 32.4 t ADT: 375

TR 119

Good

Over: DRAINAGE DITCH

1.2 MI W ILL RT 34, Saline, IL

Built 1984 Load: 32.4 t ADT: 50

TR 55

Good

Over: STREAM

0.3 MI E WILLIAMSON, Saline, IL

Built 1984 Load: 32.4 t ADT: 100

Showing 20,401-20,450 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.