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 193(OLD IL. 130

Poor

Over: EMBARRAS RIVER

SO. LAKE CHARLESTON, Coles, IL

Built 1907 Load: 6.8 t ADT: 100

TR 258

Poor

Over: STREAM

3.6 MI SW GREENFIELD, Greene, IL

Built 1901 Load: 6.8 t ADT: 150

TR 256

Poor

Over: LITTLE INDIAN CREEK

2 MI. W. YATESVILLE, Morgan, IL

Built 1936 Load: 6.8 t ADT: 50

OLD ILL RTE 3

Poor

Over: MILLER CREEK

1 MI. N. OF THEBES, Alexander, IL

Built 1933 Load: 7.1 t ADT: 100

TR 228

Poor

Over: TRIB OF BRONSON CR

3.5 NE DENVER, Hancock, IL

Built 1909 Load: 7.1 t ADT: 25

TR 91

Poor

Over: GROVE CREEK

4.5 NW BURNSIDE, Hancock, IL

Built 1966 Load: 7.1 t ADT: 75

CH 19

Poor

Over: HILLERY CREEK

3 MI. S. CAMBRIDGE, Henry, IL

Built 1959 Load: 7.1 t ADT: 325

CH 14

Poor

Over: TRIM CR.

1.16 MI NE MOMENCE, Kankakee, IL

Built 1980 Load: 7.1 t ADT: 1,200

TR 225

Poor

Over: SPRING CREEK

N 34TH E 090, LaSalle, IL

Built 1965 Load: 7.1 t ADT: 125

MS-6090 (CURTISS S

Poor

Over: B&N RR

0.35MI N of IL 104, Morgan, IL

Built 1901 Load: 7.1 t ADT: 50

TR-326

Poor

Over: SAM'S BRANCH

3 MI NE HUNT, Jasper, IL

Built 1909 Load: 7.5 t ADT: 25

TR 32

Poor

Over: PRAIRIE CREEK

2920 N, 600 E, Livingston, IL

Built 1922 Load: 7.5 t ADT: 50

TR 110

Poor

Over: STREAM

NW-26-T15NR4W, Mercer, IL

Built 1983 Load: 7.5 t ADT: 25

TR 221

Poor

Over: ROCKY BRANCH

3.0 MI SE TOWERHILL, Shelby, IL

Built 1909 Load: 7.5 t ADT: 50

TR 162A

Poor

Over: NORTH CREEK

1.5 MI NW HUEGELY, Washington, IL

Built 1930 Load: 7.5 t ADT: 25

WATKINS STREET

Poor

Over: DEER CREEK

CISNE, Wayne, IL

Built 1909 Load: 7.5 t ADT: 400

TR 124

Poor

Over: BEAR CRK.

4.5 MI W LORAINE, Adams, IL

Built 1922 Load: 7.8 t ADT: 75

TR 495

Poor

Over: S QUINCY DITCH

2.5 MI S QUINCY, Adams, IL

Built 1996 Load: 7.8 t ADT: 550

TR 185

Poor

Over: OAK BRANCH

2MI N ASSUMPTION, Christian, IL

Built 1900 Load: 7.8 t ADT: 20

TR 217 A

Poor

Over: BRUSHY BRANCH

5MI W ASSUMPTION, Christian, IL

Built 1953 Load: 7.8 t ADT: 100

TR 33 A

Poor

Over: TRIB EMBARRAS RIVER

1.5 MI SW OF DIONA, Cumberland, IL

Built 1970 Load: 7.8 t ADT: 25

TR 266

Poor

Over: LA MOINE RIVER

2.0 S DISCO, Hancock, IL

Built 1915 Load: 7.8 t ADT: 100

TR 52A

Poor

Over: MUD CREEK

2765 N, 800 E, Livingston, IL

Built 1901 Load: 7.8 t ADT: 50

TR-266

Poor

Over: Paul Creek

1.5 MI SW AMITY, Richland, IL

Built 1909 Load: 7.8 t ADT: 50

TR-442

Poor

Over: LITTLE CREEK

4 MI NW ST ELMO, Fayette, IL

Built 1954 Load: 8.1 t ADT: 35

TR-459

Poor

Over: CREEK

2 MI SE BELLE RIVE, Jefferson, IL

Built 1909 Load: 8.1 t ADT: 10

COUNTY LINE RD

Poor

Over: KISHWAUKEE OVERFLOW

0.5 M N OFUS 20, McHenry, IL

Built 1978 Load: 8.1 t ADT: 475

RICHARDS STREET

Poor

Over: HICKORY CREEK

150 FT S FIFTH AVE, Will, IL

Built 1930 Load: 8.1 t ADT: 250

WEBSTER AVE

Poor

Over: N BR CHICAGO RIVER

2200 N 1600 W, Cook, IL

Built 1916 Load: 8.4 t ADT: 4,600

TR-302

Poor

Over: RICHLAND CREEK

4.5 MI E SHOBONIER, Fayette, IL

Built 1930 Load: 8.4 t ADT: 75

FAS 532(CH 6)

Poor

Over: KANKAKEE DRAIN DITCH

4.8 MI S SEYMOUR, Champaign, IL

Built 1983 Load: 8.7 t ADT: 625

MS-4065 Creekside

Poor

Over: Spring Brook

500 FT S SPRNG GREEN, DuPage, IL

Built 1970 Load: 8.7 t ADT: 2,050

TR-359 A

Poor

Over: STREAM

N 2649 E 2425, LaSalle, IL

Built 1971 Load: 8.7 t ADT: 50

MARENGO ROAD

Poor

Over: RUSH CREEK

0.6 MI S AIRPORT RD, McHenry, IL

Built 1956 Load: 8.7 t ADT: 850

ALGONQUIN RD

Poor

Over: SPRING CR

0.1 MI SW PLUM TREE, McHenry, IL

Built 1986 Load: 8.7 t ADT: 3,200

TR 71

Poor

Over: MARROWBONE CREEK

1.9 MI NW BETHANY, Moultrie, IL

Built 1966 Load: 8.7 t ADT: 100

TR 123A

Poor

Over: WALNUT CR TRIBUTARY

1.0 MI N HULL, Pike, IL

Built 1920 Load: 8.7 t ADT: 25

TR-19

Poor

Over: LONG BRANCH

0.25 MI NE DUNDAS, Richland, IL

Built 1909 Load: 8.7 t ADT: 20

TR 181

Poor

Over: BRUSHY CREEK

6.0 NW RUSHVILLE, Schuyler, IL

Built 1971 Load: 8.7 t ADT: 50

WINTER RD CH 49

Poor

Over: DOZA CREEK SOUTH

3.5 MI S IL 13, St. Clair, IL

Built 1901 Load: 8.7 t ADT: 175

CENTER RD - TR 275

Poor

Over: SUGAR CREEK

E.CTR-14-T22NR2W, Tazewell, IL

Built 1964 Load: 8.7 t ADT: 50

GRAND RIDGE ROAD

Poor

Over: HOG RUN

0.1 MI E LASALLE RD, Grundy, IL

Built 1939 Load: 9.1 t ADT: 1,150

TR-2 LASALLE RD

Poor

Over: WAUPECON CR

.5 MI N GARDNER RD, LaSalle, IL

Built 1963 Load: 9.1 t ADT: 25

CH 34

Poor

Over: SOLOMON CRK.

3 SW OF HETTICK, Macoupin, IL

Built 1900 Load: 9.1 t ADT: 50

TR 15

Poor

Over: N. FORK CROOKED CREE

S.CTR-11-T7NR2W, McDonough, IL

Built 1959 Load: 9.1 t ADT: 50

US 67

Poor

Over: POPE CR

3 MI S OF VIOLA, Mercer, IL

Built 1931 Load: 9.1 t ADT: 2,600

OLD CHARTER OAK RO

Poor

Over: BR.OF BIG HOLLOW CR

NW CORNE1/422T9NR7E, Peoria, IL

Built 1900 Load: 9.1 t ADT: 25

TR 24

Poor

Over: MISSOURI CREEK

6.7 MI N TIMEWELL, Brown, IL

Built 1920 Load: 9.4 t ADT: 75

TR 82

Poor

Over: ACHENBACH BRANCH

3.5 N PALMER, Christian, IL

Built 1920 Load: 9.4 t ADT: 50

CO. HWY. 3

Poor

Over: LITTLE CREEK

0.5 MI N OF BURNSIDE, Hancock, IL

Built 1966 Load: 9.4 t ADT: 100

Showing 25,751-25,800 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.