State profile · Near national median SD

Illinois bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition
7.9%
Structurally deficient

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 rated 0-4

Structurally Deficient

7.9%

2,186 bridges flagged for repair priority

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 — Structurally deficient share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Illinois (FHWA NBI)

Illinois41.185163825109036%36.47046101719353%7.879465090293047%7.879465090293047%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.

44

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

31

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

17

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

25

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

29

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 composite NBI rating. Each is inspected at least every 24 months.

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

Structurally Deficient

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Structurally Deficient

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Structurally Deficient

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Structurally Deficient

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

OLD US 50

Good

Over: SUGAR CREEK BRANCH

2.7 W OF AVISTON, Clinton, IL

Built 1999 Load: 34.3 t ADT: 3,550

FAS 1605(CH 11)

Good

Over: BUTTERMILK DITCH

.75 MI W US 45, Coles, IL

Built 1980 Load: 34.3 t ADT: 650

US 12 (RAND RD)

Good

Over: BUFFALO CREEK

0.2 MI. NW OF IL 68, Cook, IL

Built 1984 Load: 34.3 t ADT: 26,800

CHERRY LANE

Good

Over: N BR CHICAGO RIV

CHERRY & CHI RV P14, Cook, IL

Built 1958 Load: 34.3 t ADT: 1,750

MEADOW RD

Good

Over: N BR CHICAGO RIV

MEADOW & CHI RV P14, Cook, IL

Built 1958 Load: 34.3 t ADT: 3,050

IL 72 FAP 553

Good

Over: BULL RUN CREEK

IN KIRKLAND, DeKalb, IL

Built 1994 Load: 34.3 t ADT: 2,150

FAS 1671

Good

Over: DITCH

NORTH OF ARCOLA, Douglas, IL

Built 2015 Load: 34.3 t ADT: 2,400

TR 8 A

Good

Over: DRAINAGE DITCH

1.8 MI SE OF ARTHUR, Douglas, IL

Built 1993 Load: 34.3 t ADT: 650

TR-220

Good

Over: E BR GREEN CREEK

0.75 MI S ST MARY'S, Effingham, IL

Built 2001 Load: 34.3 t ADT: 500

TR-218A

Good

Over: CREEK

NE CORNER EFFINGHAM, Effingham, IL

Built 1997 Load: 34.3 t ADT: 325

FAS 1878

Good

Over: MIDDLE FORK CK

S BENTON, Franklin, IL

Built 1983 Load: 34.3 t ADT: 1,050

GOODFARM RD

Good

Over: W FORK MAZON RIV

.06 MI E OF WARD RD, Grundy, IL

Built 1995 Load: 34.3 t ADT: 50

GORE RD

Good

Over: E FORK NETTLE CR

0.44 M W LISBON RD, Grundy, IL

Built 1997 Load: 34.3 t ADT: 2,000

TR 107A

Good

Over: WAUPECAN CREEK

.81 MI.E. VERONA RD., Grundy, IL

Built 2004 Load: 34.3 t ADT: 50

TR 165 SCULLY ROAD

Good

Over: TRIB TO JOHNNY RUN

.24 MI W KINSMAN RD, Grundy, IL

Built 1981 Load: 34.3 t ADT: 50

TR 384

Good

Over: ILL & MISS CANAL

2 MI NE ATKINSON, Henry, IL

Built 1983 Load: 34.3 t ADT: 50

TR 22C

Good

Over: TRIB SPRING CR

1MI S ILL 54, Iroquois, IL

Built 1976 Load: 34.3 t ADT: 50

TR 246

Good

Over: CREEK

E112 SEC 27 T95 R2W, Jackson, IL

Built 1981 Load: 34.3 t ADT: 600

FAP-95 (IL-33)

Good

Over: TRIB BIG MUDDY CREEK

ECL WHEELER, Jasper, IL

Built 1993 Load: 34.3 t ADT: 5,700

IL 146

Good

Over: LITTLE CACHE CREEK

0.1 MI E OF US 45, Johnson, IL

Built 2022 Load: 34.3 t ADT: 6,950

IL 25

Good

Over: PRAIRIE PATH BIKE TR

1.9 M N OF IL 56, Kane, IL

Built 2004 Load: 34.3 t ADT: 6,950

TR 11A

Good

Over: S BR MARSHALL SLOUGH

2.1 M NE MANTENO, Kankakee, IL

Built 1974 Load: 34.3 t ADT: 300

ILL 126

Good

Over: E. BRANCH MORGAN CRK

3.12 MI E IL 71, Kendall, IL

Built 1997 Load: 34.3 t ADT: 7,800

TR 523A

Good

Over: OTTER CREEK

N 15TH E 2190, LaSalle, IL

Built 1933 Load: 34.3 t ADT: 250

IL 2 FR RD

Good

Over: DITCH

3 MI. W. OF DIXON, Lee, IL

Built 2003 Load: 34.3 t ADT: 50

INDIAN HEAD RD

Good

Over: GREEN RV DRAINAGE DI

1.2 MI N BUREAU CO, Lee, IL

Built 1901 Load: 34.3 t ADT: 300

CH-3 (FAS-343)

Good

Over: NORTH FORK VERMILION

5 MI N OF CHATSWORTH, Livingston, IL

Built 1936 Load: 34.3 t ADT: 525

TR 251

Good

Over: STREAM

2625E,300N, Livingston, IL

Built 1994 Load: 34.3 t ADT: 450

IL 121

Good

Over: FORK DEER CREEK

2.7M S IL 10, Logan, IL

Built 1998 Load: 34.3 t ADT: 3,650

FAP 741/IL 105

Good

Over: STREAM

0.36 E 70TH ST, Macon, IL

Built 2011 Load: 34.3 t ADT: 4,450

FAS 546/CH 21

Good

Over: South Fork Creek

3 Mi. NW Warrensburg, Macon, IL

Built 2018 Load: 34.3 t ADT: 400

US 67

Good

Over: LITTLE PIASA CREEK

9.3 M S JERSEYVILLE, Madison, IL

Built 1939 Load: 34.3 t ADT: 12,100

US 40

Good

Over: EAST FORK OF SILV.CK

0.4MI WEST ILL 4, Madison, IL

Built 1985 Load: 34.3 t ADT: 8,450

FAI 255

Good

Over: MCDONOUGH LAKE DITCH

.68MI N BLACK LANE, Madison, IL

Built 1987 Load: 34.3 t ADT: 40,300

TR-246

Good

Over: RACCOON CREEK

2.5 MI SW CARTTER, Marion, IL

Built 1968 Load: 34.3 t ADT: 75

TR-470

Good

Over: PAINTROCK CREEK

2.5 MI W HELM, Marion, IL

Built 1984 Load: 34.3 t ADT: 50

HARMONY ROAD

Good

Over: UNNAMED CREEK

.6M NW OF HARMDY HIL, McHenry, IL

Built 2004 Load: 34.3 t ADT: 2,350

U.S. 150

Good

Over: ROCK CREEK

9.1 MI E IL 117, McLean, IL

Built 1999 Load: 34.3 t ADT: 950

TR 83

Good

Over: MACKINAW RIVER

1.0 MI S LEXINGTON, McLean, IL

Built 1970 Load: 34.3 t ADT: 425

CH 15 FAS 491

Good

Over: BRANCH SALT CREEK

6.0 MI W BELLFLOWER, McLean, IL

Built 1983 Load: 34.3 t ADT: 225

TR 506

Good

Over: BRANCH SALT CREEK

6.3 MI SW BELLFLOWER, McLean, IL

Built 1986 Load: 34.3 t ADT: 50

TR 149

Good

Over: THREE MILE BR

1.0 MI NW HONEYBEND, Montgomery, IL

Built 1959 Load: 34.3 t ADT: 125

I-39 & US 51

Good

Over: STREAM

1.25 MI N OF IL 64, Ogle, IL

Built 1981 Load: 34.3 t ADT: 32,200

TROXELL ROAD

Good

Over: BR OF SPOON RIVER

NE-11-T11NR5E, Peoria, IL

Built 1983 Load: 34.3 t ADT: 25

TR 85

Good

Over: STREAM

4 MI NW OF CISCO, Piatt, IL

Built 1973 Load: 34.3 t ADT: 10

FAP 558 (IL 100)

Good

Over: Stream

1.3 mi N Calhoun CL, Pike, IL

Built 2015 Load: 34.3 t ADT: 300

IL 96

Good

Over: JIMTOWN CREEK

1.8M NW US 54-ATLAS, Pike, IL

Built 2008 Load: 34.3 t ADT: 1,100

ILL 169

Good

Over: TRIB OF POST CREEK

0.7M W OF MASSAC CO, Pulaski, IL

Built 1991 Load: 34.3 t ADT: 1,300

BROWNING ROAD

Good

Over: SPRING CR OVERFLOW

0.1 MI E VETS PKWY, Sangamon, IL

Built 1997 Load: 34.3 t ADT: 5,300

OLD US 36

Good

Over: CLEAR CREEK

2.1M E BUFFALO, Sangamon, IL

Built 1998 Load: 34.3 t ADT: 600

Showing 22,151-22,200 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.