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

MS4023 (Armitage A

Poor

Over: Addison Creek

0.1 MI W WOLF RD, Cook, IL

Built 1961 Load: 20.4 t ADT: 150

FAS-651

Poor

Over: LITTLE CREEK

4.5 MI NNE RAMSEY, Fayette, IL

Built 1935 Load: 20.4 t ADT: 125

6TH STREET 8200

Poor

Over: TOWN BRANCH CREEK

VANDALIA, Fayette, IL

Built 1940 Load: 20.4 t ADT: 875

BEAR PAW RD - TR 1

Poor

Over: STREAM

CTR-17-T7NR2E, Fulton, IL

Built 1900 Load: 20.4 t ADT: 25

TR 163

Poor

Over: BR OF OAT CREEK

5.0 MI SW ATKINSON, Henry, IL

Built 1928 Load: 20.4 t ADT: 50

TR 565

Poor

Over: SPRING CR

.7M E US45, Iroquois, IL

Built 1915 Load: 20.4 t ADT: 50

TR-264

Poor

Over: CREEK

1.5 MI NW STE MARIE, Jasper, IL

Built 1930 Load: 20.4 t ADT: 25

CHICAGO RD/MS 362

Poor

Over: EAST AUX SABLE CK

BY PETERSON RD, Kendall, IL

Built 1970 Load: 20.4 t ADT: 225

TR-10 (EAKLE RD)

Poor

Over: GREEN RIVER TRIB

1.2 M N BUREAU CO LN, Lee, IL

Built 1971 Load: 20.4 t ADT: 50

TR 24A

Poor

Over: SCATTERING POINT

1675 N, 500 E, Livingston, IL

Built 1950 Load: 20.4 t ADT: 25

CH 19 EXTENSION IL

Poor

Over: WILLOW BRANCH

N EDGE OF NIANTIC, Macon, IL

Built 1978 Load: 20.4 t ADT: 700

EAST LINE ROAD- TR

Poor

Over: S BR KISHWAUKEE RIV.

5.0 NE MONROE CENTER, Ogle, IL

Built 1982 Load: 20.4 t ADT: 150

TR-35A

Poor

Over: W FK COON CREEK

3 MI SW DUNDAS, Richland, IL

Built 1909 Load: 20.4 t ADT: 50

FAS 2462-CH 11

Poor

Over: DRAINAGE DITCH

SW COR-7-T22NR5W, Tazewell, IL

Built 1960 Load: 20.4 t ADT: 400

FAP-821/FR-1686

Poor

Over: STREAM

1 MI SW JCT US-45, Wayne, IL

Built 1923 Load: 20.4 t ADT: 10

SMALTZ ROAD

Poor

Over: OTTER CREEK

4 MI NE FULTON, Whiteside, IL

Built 1982 Load: 20.4 t ADT: 375

CH 11

Poor

Over: MCKEE CREEK

4.7 MI N LIBERTY, Adams, IL

Built 1988 Load: 20.7 t ADT: 750

TR 148

Poor

Over: UNION DRAIN DIT #3

2.2 MI N CHARLESTON, Coles, IL

Built 1959 Load: 20.7 t ADT: 75

FAS 1453-CH 22

Poor

Over: BIG CREEK

SE-16-T6NR4E, Fulton, IL

Built 1939 Load: 20.7 t ADT: 300

TR 339

Poor

Over: PIGEON CR

.5 MI E. CISSA PARK, Iroquois, IL

Built 1967 Load: 20.7 t ADT: 150

CREEK RD

Poor

Over: LITTLE ROCK CK

0.5MI N-LITTLE RK RD, Kendall, IL

Built 1995 Load: 20.7 t ADT: 1,550

TR-142

Poor

Over: DRAIN DITCH

N EDGE MT CARMEL APT, Lawrence, IL

Built 1967 Load: 20.7 t ADT: 35

SLANT RD

Poor

Over: BIG BUREAU CREEK

4 MI SE OF SUBLETTE, Lee, IL

Built 1939 Load: 20.7 t

TR 38

Poor

Over: STRINGTOWN BRANCH

3.5 MI W LOVINGTON, Moultrie, IL

Built 1930 Load: 20.7 t ADT: 50

COUNTRY CLUB DR

Poor

Over: STREAM

SE-31-T25NR4W, Tazewell, IL

Built 1962 Load: 20.7 t ADT: 1,000

TR 238

Poor

Over: STREAM

2 MI S MAYVIEW, Champaign, IL

Built 1982 Load: 21.1 t ADT: 75

TR 65

Poor

Over: CREEK

2 MI NW EDINBURG, Christian, IL

Built 1900 Load: 21.1 t ADT: 50

VAN BUREN ST

Poor

Over: S BR CHICAGO RIVER

400 S & 361 W, Cook, IL

Built 1956 Load: 21.1 t ADT: 6,200

LSD-RAMP 300

Poor

Over: LAND

500E.& 200N., Cook, IL

Built 1986 Load: 21.1 t ADT: 98,000

TR-107B REED RD

Poor

Over: JOHNNY RUN

.02 MI E OLD MAZON R, Grundy, IL

Built 1940 Load: 21.1 t ADT: 275

TR 284 (OLD RT 1)

Poor

Over: BR SUGAR CREEK

5.01 M SW OF ILL 1, Iroquois, IL

Built 1930 Load: 21.1 t ADT: 50

TR 55B

Poor

Over: MARTINTON DCH NO 3

3 MI E MARTINTON, Iroquois, IL

Built 1927 Load: 21.1 t ADT: 125

SCHLAPP RD

Poor

Over: EAST AUX-SABLE CR

SCHLAPP & WALKER, Kendall, IL

Built 1967 Load: 21.1 t ADT: 1,000

TR 24

Poor

Over: MOLE CREEK

2410 N, 500 E, Livingston, IL

Built 1965 Load: 21.1 t ADT: 100

COUNTY HIGHWAY 11

Poor

Over: RED OAK DITCH

6 MI NE OF EASTON, Mason, IL

Built 1954 Load: 21.1 t ADT: 75

US 24/FAP 317

Poor

Over: INTERMIT STREAM

13.13 M E OF US 51, McLean, IL

Built 1959 Load: 21.1 t ADT: 2,650

JERSEY AVE FAU 635

Poor

Over: SUGAR CR

1.0 MI NW BUS55 & 9, McLean, IL

Built 1964 Load: 21.1 t ADT: 2,400

FAS-1858 (CH-12)

Poor

Over: Dennis Hollow

E CITY LIM VALMEYER, Monroe, IL

Built 1927 Load: 21.1 t ADT: 775

TR 3 (CR 2500N)

Poor

Over: Stringtown Branch

560E CR 2500N, Moultrie, IL

Built 1993 Load: 21.1 t ADT: 50

TR 6

Poor

Over: OPPOSSUM CREEK

3.3 MI NW OCONEE, Shelby, IL

Built 1909 Load: 21.1 t ADT: 125

TR 302

Poor

Over: GRAPE CREEK

CITY OF TILTON- SW, Vermilion, IL

Built 1972 Load: 21.1 t ADT: 300

FAS-2822

Poor

Over: EAGLE SLOUGH DRAINAG

5 MI SW FAIRFIELD, Wayne, IL

Built 1915 Load: 21.1 t ADT: 10

EAST ELEVENTH STRE

Poor

Over: IL MIS FEEDER CANAL

11TH ST .5 MI E IL40, Whiteside, IL

Built 1963 Load: 21.1 t ADT: 1,200

LAWRENCE ST

Poor

Over: FRACTION RUN

0.2 MI N BRUCE ST, Will, IL

Built 1964 Load: 21.1 t ADT: 1,400

CHERRY HILL RD

Poor

Over: JACKSON CR

0.7MI S.MANHATTAN RD, Will, IL

Built 1900 Load: 21.1 t ADT: 775

TR-109

Poor

Over: LIME CREEK

4 MI. W. GREEN OAK, Bureau, IL

Built 1959 Load: 21.4 t ADT: 150

SCENIC BLUFF RD

Poor

Over: CARROLL CREEK

3.5 M W MT CARROLL, Carroll, IL

Built 1974 Load: 21.4 t ADT: 75

TR 71

Poor

Over: BUCKHART CREEK

6.25 MI. E EDINBURG, Christian, IL

Built 1900 Load: 21.4 t ADT: 20

TR-345A

Poor

Over: ELM CREEK

2 MI E FLORA, Clay, IL

Built 1959 Load: 21.4 t ADT: 100

THAWVILLE RD

Poor

Over: STREAM

1510E,1900N, Ford, IL

Built 1936 Load: 21.4 t ADT: 75

Showing 26,001-26,050 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.