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

TR 209 A

Structurally Deficient

Over: KASKASKIA DITCH

4.8 MI SW CHAMPAIGN, Champaign, IL

Built 1974 Load: 28.8 t ADT: 350

CICERO AVE

Structurally Deficient

Over: SANITARY SHIP CANAL

4000 S & 4800 W, Cook, IL

Built 1927 Load: 28.8 t ADT: 50,400

ROOSEVELT RD

Structurally Deficient

Over: S BR CHICAGO RIVER

230 W. ROOSEVELT RD., Cook, IL

Built 1928 Load: 28.8 t ADT: 26,800

HARTMAN ROAD

Structurally Deficient

Over: UNION DRAINAGE DITCH

2070N 1650E, DeKalb, IL

Built 1971 Load: 28.8 t ADT: 100

TR 77

Structurally Deficient

Over: CLAYPOOL DITCH

0.50 MI.E. GORMAN RD, Grundy, IL

Built 2001 Load: 28.8 t ADT: 250

ILL 17

Structurally Deficient

Over: ILL RIVER

9.55 MI W OF ILL 89, Marshall, IL

Built 1939 Load: 28.8 t ADT: 7,000

TWP RD 104

Structurally Deficient

Over: MASSAC CK

4.5 MI EAST RD KNOB, Massac, IL

Built 1977 Load: 28.8 t ADT: 25

BRUSH GROVE RD.

Structurally Deficient

Over: DRAINAGE DITCH

3.5 S.W. ROCHELLE, Ogle, IL

Built 1962 Load: 28.8 t ADT: 275

BIG MOUND ROAD

Structurally Deficient

Over: KILBUCK CREEK

2.5 M NW LINDENWOOD, Ogle, IL

Built 1981 Load: 28.8 t ADT: 500

HONEY CREEK ROAD

Structurally Deficient

Over: KYTE CREEK

1.7 M E OF DAYSVILLE, Ogle, IL

Built 1983 Load: 28.8 t ADT: 150

FAS 603

Structurally Deficient

Over: BAY CREEK

.75 MI W NEBO, Pike, IL

Built 1963 Load: 28.8 t ADT: 725

ROSS LN(FAU 7011)

Structurally Deficient

Over: GRAPE CREEK

CITY OF TILTON, Vermilion, IL

Built 1976 Load: 28.8 t ADT: 2,100

FAS 496(CH 14)

Structurally Deficient

Over: TRIB MIDDLE BRANCH

1.8 MI E ROSSVILLE, Vermilion, IL

Built 1984 Load: 28.8 t ADT: 400

18TH ST

Structurally Deficient

Over: RR TRACKS

1800S.& 300W.TO 200W, Cook, IL

Built 1967 Load: 29.2 t ADT: 5,650

TR-61 SOUTHMOR RD

Structurally Deficient

Over: WAUPECAN CREEK

0.10 MI W SCOUT RD, Grundy, IL

Built 1980 Load: 29.2 t ADT: 125

TR 442

Structurally Deficient

Over: TRIB TO IROQUOIS RV

2.5 MI SE OF IROQUOI, Iroquois, IL

Built 1952 Load: 29.2 t ADT: 75

BOLLMAN RD

Structurally Deficient

Over: THREE MILE BRANCH

0.9 MI S ROCK ISLAND, Lee, IL

Built 1901 Load: 29.2 t ADT: 25

S MAIN ST

Structurally Deficient

Over: TOWN BROOK

S MAIN ST AT BROOK, Morgan, IL

Built 1985 Load: 29.2 t ADT: 8,000

TOWNSHIP ROAD 74

Structurally Deficient

Over: MASTERS CR.

4 MI. W. OF LAMOILLE, Bureau, IL

Built 1965 Load: 29.5 t ADT: 125

GLIDDEN RD

Structurally Deficient

Over: LEE SLOUGH CREEK

2955N 850E, DeKalb, IL

Built 1997 Load: 29.5 t ADT: 3,550

PRITCHARD RD

Structurally Deficient

Over: W BR LITTLE ROCK CRE

1035N 1700E, DeKalb, IL

Built 1967 Load: 29.5 t ADT: 350

AVE F (CANTON)

Structurally Deficient

Over: BIG CREEK

SE-28-T7NR4E, Fulton, IL

Built 1976 Load: 29.5 t ADT: 800

SPRING RD TR-105

Structurally Deficient

Over: JOHNNY RUN CREEK

.6 MI W HIGGINS RD, Grundy, IL

Built 1980 Load: 29.5 t ADT: 75

HADDEN RD TR-102

Structurally Deficient

Over: JOHNNY RUN CREEK

.42 MI S MINE RD, Grundy, IL

Built 1975 Load: 29.5 t ADT: 75

SBI 36

Structurally Deficient

Over: BLUE CREEK

1.3MI W DETROIT, Pike, IL

Built 1923 Load: 29.5 t ADT: 25

CANAL STREET

Structurally Deficient

Over: UNION STATION TRACKS

500 W & 0 N/S - 130S, Cook, IL

Built 1926 Load: 29.8 t ADT: 5,100

IL 53

Structurally Deficient

Over: GREAT WESTERN TRAIL

0.8 M S OF IL 64, DuPage, IL

Built 1936 Load: 29.8 t ADT: 18,300

CH 13-CHATAUQUA ST

Structurally Deficient

Over: LITTLE CRAB ORCH CR

0.25M W EMARALD LANE, Jackson, IL

Built 1976 Load: 29.8 t ADT: 2,700

TR 341

Structurally Deficient

Over: KICKAPOO CREEK

SE-14-T9NR4E, Knox, IL

Built 1974 Load: 29.8 t ADT: 50

ILL 40

Structurally Deficient

Over: BNSF RR (004590M)

S EDGE OF EDELSTEIN, Peoria, IL

Built 1930 Load: 29.8 t ADT: 2,750

ILL 26/FAS 2370

Structurally Deficient

Over: DRAINAGE DITCH

4.75 MI S OF ILL 71, Putnam, IL

Built 1956 Load: 29.8 t ADT: 800

FAS 504(TR 501)

Structurally Deficient

Over: GRAPE CREEK

2 MI E BELGIUM, Vermilion, IL

Built 1977 Load: 29.8 t ADT: 300

FAS 359 CH 4

Structurally Deficient

Over: PANTHER CREEK

2.5 MI W PANOLA, Woodford, IL

Built 1980 Load: 29.8 t ADT: 400

TR 267

Structurally Deficient

Over: COAL CREEK

W EDGE OF SHEFFIELD, Bureau, IL

Built 1957 Load: 30.1 t ADT: 200

3RD ST (CH 30)

Structurally Deficient

Over: OWL CREEK

VILLAGE OF FISHER, Champaign, IL

Built 1972 Load: 30.1 t ADT: 1,200

IL 68 (DUNDEE RD)

Structurally Deficient

Over: SKOKIE RIVER

0.2 M E I-94, Cook, IL

Built 1935 Load: 30.1 t ADT: 12,600

ILL 9

Structurally Deficient

Over: LOST GROVE CREEK

4 MI W OF FIATT, Fulton, IL

Built 1980 Load: 30.1 t ADT: 1,450

FAS 1739

Structurally Deficient

Over: HURRICANE CREEK

1 MI. SE WILMINGTON, Greene, IL

Built 1994 Load: 30.1 t ADT: 200

TR 17 (TH-C57)

Structurally Deficient

Over: LITTLE SANDY CREEK

T30N-R1W-3PM SEC 4, Marshall, IL

Built 1977 Load: 30.1 t ADT: 50

FAP 64 EB Adams

Structurally Deficient

Over: BNSF & Abandoned UP RR

W CL OF PEORIA, Peoria, IL

Built 1980 Load: 30.1 t ADT: 18,000

BAKER RD TR-108

Structurally Deficient

Over: WAUPECON CR

.4 MI N SPRING RD, Grundy, IL

Built 1978 Load: 30.5 t ADT: 75

TR 72

Structurally Deficient

Over: LITTLE BEAR CREEK

5 MI SW OF BASCO, Hancock, IL

Built 1965 Load: 30.5 t ADT: 225

COLLEGE ST

Structurally Deficient

Over: PILES FORK

CITY HALL CARBONDALE, Jackson, IL

Built 1971 Load: 30.5 t ADT: 1,700

ILL 41

Structurally Deficient

Over: BNSF RR (063729D)

0.5 M N.ST.AUGUSTINE, Knox, IL

Built 1983 Load: 30.5 t ADT: 2,300

St. F Muni 7250

Structurally Deficient

Over: WABASH RIVER

ST. FRANCISVILLE, Lawrence, IL

Built 1906 Load: 30.5 t ADT: 500

TR184 CARBON HILL

Structurally Deficient

Over: CLAYPOOL DRAIN DITCH

.55 MI S WHITETIE RD, Grundy, IL

Built 1981 Load: 30.8 t ADT: 425

JOHNSON ST

Structurally Deficient

Over: NETTLE CR

JOHNSON ST OV NET CR, Grundy, IL

Built 1971 Load: 30.8 t ADT: 800

FAS 441 - CH 9

Structurally Deficient

Over: CARTER CR

NE-24-T4NR2W, McDonough, IL

Built 1955 Load: 30.8 t ADT: 750

STORM RD TR-180

Structurally Deficient

Over: EAST FK MAZON RIVER

.33 MI S STONEWALL R, Grundy, IL

Built 1979 Load: 31.1 t ADT: 50

TR-1

Structurally Deficient

Over: EAGLE CR

320 E, 3300 N, Livingston, IL

Built 1965 Load: 31.1 t ADT: 200

Showing 27,551-27,600 of 27,743 bridges

Related

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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.