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

ADAMS ST

Poor

Over: S BR CHICAGO RIV

200 S & 380 W, Cook, IL

Built 1927 Load: 34.0 t ADT: 6,600

TORRENCE AVE

Poor

Over: CALUMET RIVER

12440 S TORRENCE AVE, Cook, IL

Built 1938 Load: 34.0 t ADT: 14,500

WESTERN AV/31ST

Poor

Over: SANITARY&SHIP CANAL

3100 S WESTERN AVE, Cook, IL

Built 1940 Load: 34.0 t ADT: 24,800

GRAND AVE

Poor

Over: LAND

530 N. & 540 W., Cook, IL

Built 1977 Load: 34.0 t ADT: 4,450

I-294 NB

Poor

Over: C&NW RR

1.7 M S US 20 P20, Cook, IL

Built 1958 Load: 34.0 t ADT: 75,250

ILL 13

Poor

Over: NORTH FORK SALINE R

2.5 MI W ILL 1, Gallatin, IL

Built 1964 Load: 34.0 t ADT: 3,700

TR 211

Poor

Over: PRAIRIE CREEK

2.8 MI E OF CARTHAGE, Hancock, IL

Built 1976 Load: 34.0 t ADT: 75

TR 132

Poor

Over: HENDERSON CR

W-CTR-17-T10NR4W, Henderson, IL

Built 1998 Load: 34.0 t ADT: 50

ASHLEY RD

Poor

Over: MIDDLE AUX SABLE

.5 MI N OF WALKER RD, Kendall, IL

Built 2009 Load: 34.0 t ADT: 425

TR 31

Poor

Over: EAGLE BRANCH

3.5 MI ESE CHAUNCEY, Lawrence, IL

Built 2006 Load: 34.0 t ADT: 25

TR 75

Poor

Over: SCATTERING POINT CR

810 E, 2400 N, Livingston, IL

Built 1977 Load: 34.0 t ADT: 50

TR 167 ROCK HILL

Poor

Over: INDIAN CREEK

3MI NW EDWARDSVILLE, Madison, IL

Built 1997 Load: 34.0 t ADT: 100

TR 103

Poor

Over: SANDY CR.

4 MI N MANCHESTER, Scott, IL

Built 1977 Load: 34.0 t ADT: 50

TR 151

Poor

Over: CAMP RUN

SW COR-1-T12NR7E, Stark, IL

Built 1980 Load: 34.0 t ADT: 50

TR 116

Poor

Over: LOST CREEK

SE-17-T24NR4W, Tazewell, IL

Built 1972 Load: 34.0 t ADT: 375

ILL 146

Poor

Over: CLEAR CREEK

2 MI E. OF ILL 3, Union, IL

Built 1976 Load: 34.0 t ADT: 4,050

TR-134

Poor

Over: AUXIER CREEK DRAIN

3.5 MI W MAYBERRY, Wayne, IL

Built 1985 Load: 34.0 t ADT: 50

CH 31(FAS 674)

Poor

Over: LITTLE WABASH RIVER

0.8MI S. PARADISE RD, Coles, IL

Built 1961 Load: 34.3 t ADT: 1,100

ILL 1

Poor

Over: CRAWFORD CREEK

4.3 MI N OF ILL 13, Gallatin, IL

Built 1929 Load: 34.3 t ADT: 1,400

TR 251

Poor

Over: BRANCH TAYLOR CK.

2.5 MI. NW ROCKBRIDG, Greene, IL

Built 1990 Load: 34.3 t ADT: 50

FAU-1239 Rockland

Poor

Over: DesPlaines River

1.5 MI W I-94, Lake, IL

Built 1990 Load: 34.3 t ADT: 3,450

TR 70

Poor

Over: MUD CREEK

2645 N,1000 E, Livingston, IL

Built 1977 Load: 34.3 t ADT: 100

CH 34E

Poor

Over: SUGAR CR

2 MI E UNION, Logan, IL

Built 1978 Load: 34.3 t ADT: 100

I 24 WB

Poor

Over: BEAR CREEK

4 MI S JOHNSON CO, Massac, IL

Built 1971 Load: 34.3 t ADT: 10,600

ILL 10(FAP 721)

Poor

Over: W BR GOOSE CREEK

1.0 MI W OF DELAND, Piatt, IL

Built 1977 Load: 34.3 t ADT: 1,600

US 150

Poor

Over: MUD CREEK

EAST OF MORTON, Tazewell, IL

Built 1956 Load: 34.3 t ADT: 2,350

Voorhees (FAU 6999

Poor

Over: LICK CREEK-DAISEY LN

CITY OF DANVILLE, Vermilion, IL

Built 1962 Load: 34.3 t ADT: 3,300

DIXON AVENUE

Poor

Over: HOWLAND CREEK

2.6 MI E ROCK FALLS, Whiteside, IL

Built 1955 Load: 34.3 t ADT: 1,050

PRAIRIE HILL RD

Poor

Over: ROCK RIVER

0.4 MI W ILL 2, Winnebago, IL

Built 1966 Load: 34.3 t ADT: 4,200

TR 85

Poor

Over: PARTRIDGE CREEK

2.5 MI N METAMORA, Woodford, IL

Built 1987 Load: 34.3 t ADT: 50

S. APPLETON ROAD

Poor

Over: KISHWAUKEE RIVER

N OF LOCUST ST, Boone, IL

Built 1964 Load: 34.7 t ADT: 11,700

W WACKER RD

Poor

Over: BR OF PLUM RIV

4 MI SW MT CARROLL, Carroll, IL

Built 1986 Load: 34.7 t ADT: 150

US 20

Poor

Over: POPLAR CREEK

0.26 M E KANE CO, Cook, IL

Built 1959 Load: 34.7 t ADT: 44,100

CHICAGO AVE

Poor

Over: N BR CHICAGO RIVER

622 W CHGO AVE P5C, Cook, IL

Built 1914 Load: 34.7 t ADT: 19,900

KEDZIE AVE

Poor

Over: SANITARY&SHIP CANAL

3400 S & 3200 W, Cook, IL

Built 1909 Load: 34.7 t ADT: 22,000

I-57 (SB)

Poor

Over: Eastern Illinois RR

.3 MI S NEOGA INT, Cumberland, IL

Built 1964 Load: 34.7 t ADT: 9,450

LEMAN RD - TR 304

Poor

Over: BIG CREEK

SW-8-T5NR3E, Fulton, IL

Built 1975 Load: 34.7 t ADT: 25

TR 90

Poor

Over: FK OF LITTLE BEAR CR

2.0 MI W BASCO, Hancock, IL

Built 1977 Load: 34.7 t ADT: 50

TR 154

Poor

Over: GROVE CREEK

1.5 NW ADRIAN, Hancock, IL

Built 1965 Load: 34.7 t ADT: 150

IL 120 WB

Poor

Over: DES PLAINES RIVER

2.5 M W OF US 41, Lake, IL

Built 1959 Load: 34.7 t ADT: 30,700

TR 535

Poor

Over: PRAIRE CREEK

N 14TH E 1950, LaSalle, IL

Built 1974 Load: 34.7 t ADT: 275

TR 203

Poor

Over: SPRING CREEK

N 36TH E 150, LaSalle, IL

Built 1977 Load: 34.7 t ADT: 175

FAP-327EB (US-50)

Poor

Over: ALLISON DITCH NO 1

2 MI E AIRPORT INT, Lawrence, IL

Built 1957 Load: 34.7 t ADT: 7,200

FAP-327WB (US-50)

Poor

Over: ALLISON DITCH NO 1

2 MI E AIRPORT INT, Lawrence, IL

Built 1957 Load: 34.7 t ADT: 7,200

TOWN HALL RD (TR23

Poor

Over: BR. GREEN RIVER

3 MI. N. OF US 30, Lee, IL

Built 1993 Load: 34.7 t ADT: 25

TR 229(ZION CHAPEL

Poor

Over: SPRING CREEK

4.25 MI N BLUE MOUND, Macon, IL

Built 1980 Load: 34.7 t ADT: 100

CH 32 LEBANON RD

Poor

Over: SILVER CK

8.0MI E COLLINSVILLE, Madison, IL

Built 1970 Load: 34.7 t ADT: 350

CH-12 (FAS 582)

Poor

Over: CAMP CREEK

2 MI E VERSAILLES, Brown, IL

Built 1997 Load: 35.0 t ADT: 125

TR-41

Poor

Over: LITTLE WABASH RIVER

2 MI W HORD, Clay, IL

Built 1988 Load: 35.0 t ADT: 75

OLD ORCHD TO I-94

Poor

Over: GROUND

EDENS & OLD ORCH, Cook, IL

Built 1982 Load: 35.0 t ADT: 6,200

Showing 26,701-26,750 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.