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

ILL 2 S B

Fair

Over: ROCK RIVER

0.1 M S HONONEGAH RD, Winnebago, IL

Built 1966 Load: 22.4 t ADT: 8,550

IL 2 N B

Fair

Over: ROCK RIVER

0.1 M S HONONEGAH RD, Winnebago, IL

Built 1966 Load: 22.4 t ADT: 8,550

ROTHWELL ROAD

Fair

Over: BR OF CANAL CREEK

AT COUNTY LINE, Winnebago, IL

Built 1937 Load: 22.4 t ADT: 150

BURR OAK ROAD

Fair

Over: S KINNICKINNICK CR

0.3 MI S LOVESEE RD, Winnebago, IL

Built 1965 Load: 22.4 t ADT: 300

TAFT ROAD

Fair

Over: S.E. DRAINAGEWAY

0.1 MI E KISHWAUKEE, Winnebago, IL

Built 1967 Load: 22.4 t ADT: 100

TR 294

Fair

Over: Trib Tournear Creek

0.30 mi N TR 419, Adams, IL

Built 1900 Load: 22.7 t ADT: 25

TR 239

Fair

Over: LOCUST FORK

.5M S PIERRON, Bond, IL

Built 1964 Load: 22.7 t ADT: 150

TR 185

Fair

Over: BEAVER CR

2.00M S GREENVILLE, Bond, IL

Built 1975 Load: 22.7 t ADT: 275

W SCENIC PALISADES

Fair

Over: CARROLL CREEK

2.5 MI W MT CARROLL, Carroll, IL

Built 1965 Load: 22.7 t ADT: 75

OTTER CREEK DRIVE

Fair

Over: OTTER CREEK

5 MI W OF BROOKVILLE, Carroll, IL

Built 1962 Load: 22.7 t ADT: 50

FAS 339(CH 23)

Fair

Over: HILLSBURY SLOUGH

1.5 MI S FORD CO LIN, Champaign, IL

Built 1932 Load: 22.7 t ADT: 1,000

CH 2 - FAS 556

Fair

Over: HUNTER BRANCH

2.5 MI NE MT AUBURN, Christian, IL

Built 1961 Load: 22.7 t ADT: 650

TR 76

Fair

Over: FLAT BRANCH

1.0 MI W HUMBOLT, Coles, IL

Built 1909 Load: 22.7 t ADT: 175

IL 83 (147TH ST)

Fair

Over: MIDLOTHIAN CREEK

0.5 M E CRAWFORD AV, Cook, IL

Built 1954 Load: 22.7 t ADT: 19,600

SAUK TRAIL

Fair

Over: THORN CREEK

0.6 M W ASHLAND P2, Cook, IL

Built 1932 Load: 22.7 t ADT: 15,300

CH 1(FAS 656)

Fair

Over: LONG POINT CREEK

1.5 MI E OF NEOGA, Cumberland, IL

Built 1950 Load: 22.7 t ADT: 900

TR 56

Fair

Over: DRAINAGE DITCH

1.5 MI SE KENNY, De Witt, IL

Built 1967 Load: 22.7 t ADT: 75

CH 8(FAS 679)

Fair

Over: SHILOH #3 DRAINAGE

.4 MI W OF GARLAND, Edgar, IL

Built 1955 Load: 22.7 t ADT: 225

FAS-800

Fair

Over: SUGAR CREEK

0.5 MI SE BLOOD, Edwards, IL

Built 1940 Load: 22.7 t ADT: 700

FAS 2796 (US-40)

Fair

Over: BRICKYARD BR

WCL ST ELMO, Fayette, IL

Built 1951 Load: 22.7 t ADT: 2,450

TR-346

Fair

Over: CAMP CREEK

1.5 MI NW BROWNSTOWN, Fayette, IL

Built 1935 Load: 22.7 t ADT: 20

ILL 14

Fair

Over: JORDAN CREEK

3.5 MI E BENTON, Franklin, IL

Built 1923 Load: 22.7 t ADT: 1,850

ILL 100

Fair

Over: KERTON CR

2 MI N ANDERSON LK P, Fulton, IL

Built 1935 Load: 22.7 t ADT: 550

FAS 460-CH 14

Fair

Over: WEST MUDDY BRANCH

NW-15-T5NR2E, Fulton, IL

Built 1952 Load: 22.7 t ADT: 150

FAS 1449-CH 34

Fair

Over: AT&SF RR (801401M)

N1/2-21-T6NR1E, Fulton, IL

Built 1961 Load: 22.7 t ADT: 100

TR 770

Fair

Over: S.BRANCH SWEGLE CK

S.CTR-11-T8NR2E, Fulton, IL

Built 1955 Load: 22.7 t ADT: 75

FAS-836 (CH-35)

Fair

Over: PUNCHEON CREEK

5 MI W WALTONVILLE, Jefferson, IL

Built 1956 Load: 22.7 t ADT: 550

FAS 174N/CH 41

Fair

Over: INDIAN CREEK

E 1351,N 4600, LaSalle, IL

Built 1952 Load: 22.7 t ADT: 200

CH 8 STEWARD RD

Fair

Over: WILLOW CREEK

5.5 MI S STEWARD, Lee, IL

Built 1951 Load: 22.7 t ADT: 125

TR 69

Fair

Over: BAKER RUN

1505 E, 2500 N, Livingston, IL

Built 1953 Load: 22.7 t ADT: 50

TR 169A

Fair

Over: HICKORY CREEK

1660 E, 1300 N, Livingston, IL

Built 1914 Load: 22.7 t ADT: 75

TR 220

Fair

Over: GOOSEBERRY CREEK

2890 N, 2500 E, Livingston, IL

Built 1965 Load: 22.7 t ADT: 100

TR 282

Fair

Over: BROUGHTON CREEK

2395 N, 3500 E, Livingston, IL

Built 1965 Load: 22.7 t ADT: 50

TR 212

Fair

Over: LAKE FORK CK TRIB

1 MI E LAKE FORK, Logan, IL

Built 1958 Load: 22.7 t ADT: 20

TR 25

Fair

Over: BRUSH CRK.

1 MI E VIRDEN, Macoupin, IL

Built 1958 Load: 22.7 t ADT: 250

FAS 567

Fair

Over: C & IM RR CO

N CITY LIMITS HAVANA, Mason, IL

Built 1949 Load: 22.7 t ADT: 2,150

US 45

Fair

Over: OHIO RIVER

BROOKPORT, Massac, IL

Built 1929 Load: 22.7 t ADT: 4,450

CARLS ROAD

Fair

Over: COON CREEK

0.7 MI N OF IL 23, McHenry, IL

Built 1953 Load: 22.7 t ADT: 50

KISHWAUKEE VALLEY

Fair

Over: Mud Creek

0.2 MI E OLESON RD, McHenry, IL

Built 1958 Load: 22.7 t ADT: 3,500

TR 433

Fair

Over: LITTLE KICKAPOO CR

4.3 MI W DOWNS, McLean, IL

Built 1968 Load: 22.7 t ADT: 75

TR 22

Fair

Over: WINTERS CREEK

SW-3-T14NR5W, Mercer, IL

Built 1965 Load: 22.7 t ADT: 25

TR 0269

Fair

Over: STREAM

1.5 SW LITCHFIELD, Montgomery, IL

Built 1900 Load: 22.7 t ADT: 25

CH 0025

Fair

Over: BR SHOP CREEK

6 N LITCHFIELD, Montgomery, IL

Built 1932 Load: 22.7 t ADT: 125

TR 230

Fair

Over: MAUVAISE TERRE CREEK

2MI NE JACKSONVILLE, Morgan, IL

Built 1961 Load: 22.7 t ADT: 175

TR 4 A

Fair

Over: WILBORN CREEK

4.5 MI SW BETHANY, Moultrie, IL

Built 1958 Load: 22.7 t ADT: 50

TR 115

Fair

Over: WILBORN CREEK

4.5 MI SW BETHANY, Moultrie, IL

Built 1959 Load: 22.7 t ADT: 75

BETHEL RD.

Fair

Over: DRAINAGE DITCH

3.5 N.W. ROCHELLE, Ogle, IL

Built 1956 Load: 22.7 t ADT: 150

SPRING CREEK RD.

Fair

Over: SPRING CREEK

3.5 N OREGON, Ogle, IL

Built 1971 Load: 22.7 t ADT: 125

TR 71

Fair

Over: DRAINAGE DITCH

3.0 MI S WELDON, Piatt, IL

Built 1900 Load: 22.7 t ADT: 50

TR 117 A

Fair

Over: STREAM

1 MI SE ALLERTON PK, Piatt, IL

Built 1950 Load: 22.7 t ADT: 25

Showing 4,901-4,950 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.