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 254

Good

Over: E BR PANTHER CR

3.7 MI SE PANOLA, Woodford, IL

Built 1895 Load: 36.3 t ADT: 25

CH 17

Good

Over: BEAR CREEK

2MI W OF GOLDEN CH17, Adams, IL

Built 1992 Load: 36.6 t ADT: 475

FAS 941

Good

Over: HARTLINE CREEK

1.2 MI E OF ILL 127, Alexander, IL

Built 1980 Load: 36.6 t ADT: 800

FAS 244

Good

Over: BUREAU CREEK

2 MI NW PRINCETON, Bureau, IL

Built 2016 Load: 36.6 t ADT: 950

TR-111

Good

Over: Brush Creek

2 MI NE ARLINGTON, Bureau, IL

Built 1984 Load: 36.6 t ADT: 50

TR 154A

Good

Over: Buck Creek

4 Mi. SW Louisville, Clay, IL

Built 2018 Load: 36.6 t ADT: 100

TR 183

Good

Over: CASSEL CREEK

.5 MI W CHARLESTON, Coles, IL

Built 2003 Load: 36.6 t ADT: 150

DAMEN AVE

Good

Over: LAND-32ND TO I55 RPS

3200 S & 2000 W, Cook, IL

Built 1930 Load: 36.6 t ADT: 21,900

CH 25(FAS 700)

Good

Over: HURRICANE CREEK

.5 MI W MAPLE POINT, Cumberland, IL

Built 1958 Load: 36.6 t ADT: 375

IL 64

Good

Over: SALT CREEK

0.25 M W OF IL 83, DuPage, IL

Built 1985 Load: 36.6 t ADT: 44,000

IL 49(FAP 836)

Good

Over: STREAM

6 MI N OF US 36, Edgar, IL

Built 2020 Load: 36.6 t ADT: 1,000

TR-194A

Good

Over: SUGAR FORK CREEK

2.5 MI N EFFINGHAM, Effingham, IL

Built 1989 Load: 36.6 t ADT: 475

TR-316A

Good

Over: BISHOP CREEK

1 MI NW DIETRICH, Effingham, IL

Built 1987 Load: 36.6 t ADT: 50

TR 25

Good

Over: Gossage Branch

1.0 Mi. SW Beecher C, Effingham, IL

Built 2016 Load: 36.6 t ADT: 60

TR-302

Good

Over: BRANCH BISHOP CREEK

3 MI W DIETRICH, Effingham, IL

Built 1979 Load: 36.6 t ADT: 350

FAS 2873

Good

Over: TR B MUD & MID FORK

BESSIE RD, Franklin, IL

Built 1980 Load: 36.6 t ADT: 200

TR 382

Good

Over: AKIN CREEK

TR 382 OV AKIN CREEK, Franklin, IL

Built 1981 Load: 36.6 t ADT: 25

FAS 1880

Good

Over: INDIAN CK

CROCKER ROAD, Franklin, IL

Built 1981 Load: 36.6 t ADT: 450

TR 17(FR)

Good

Over: WALLEY RUN CREEK

4.7MI E I 80 IL 47, Grundy, IL

Built 2003 Load: 36.6 t ADT: 800

US 6

Good

Over: E FORK NETTLE CREEK

WEST OF IL 47, Grundy, IL

Built 2006 Load: 36.6 t ADT: 13,700

DUPONT RD/FAS 1273

Good

Over: BILLS RUN CREEK

0.14 MI W OF TR 80, Grundy, IL

Built 2009 Load: 36.6 t ADT: 1,200

TR 40 SWELL RD

Good

Over: MURRAY SLUICE

.15 MI S SCULLY RD, Grundy, IL

Built 1987 Load: 36.6 t ADT: 25

FAS-882 (CH-10)

Good

Over: WOLF CREEK

0.5 MI E BLAIRSVILLE, Hamilton, IL

Built 1987 Load: 36.6 t ADT: 1,200

TR 356

Good

Over: NORTH FORK DRAINAGE

8 MI SE MCLEANSBORO, Hamilton, IL

Built 1997 Load: 36.6 t ADT: 25

FAS 434 (CH 6)

Good

Over: La Moine River

1.04 mi W of IL 61, Hancock, IL

Built 1968 Load: 36.6 t ADT: 150

IL 13 WB

Good

Over: CRAB ORCHARD CREEK

1.8 MI E CARBONDALE, Jackson, IL

Built 1995 Load: 36.6 t ADT: 25,800

TR 313

Good

Over: HAPPY HOLLOW CREEK

1 MI S GORHAM, Jackson, IL

Built 1992 Load: 36.6 t ADT: 25

IL 109

Good

Over: OTTER CREEK

2MI S OF JERSEYVILLE, Jersey, IL

Built 2004 Load: 36.6 t ADT: 3,700

I-88

Good

Over: STREAM

.7 MI E. OF ILL 47, Kane, IL

Built 1972 Load: 36.6 t ADT: 31,700

HINCKLEY ROAD

Good

Over: W BRANCH BIG ROCK CR

0.1 MI E. Jericho Rd, Kane, IL

Built 1975 Load: 36.6 t ADT: 200

LAFOX ROAD

Good

Over: MILL CREEK

LAFOX & CAMPTON HILL, Kane, IL

Built 1977 Load: 36.6 t ADT: 8,150

FAU 6188/CH 58

Good

Over: MINNIE CR

0.52 MI S.OF ILL 115, Kankakee, IL

Built 1981 Load: 36.6 t ADT: 1,800

FAS 806

Good

Over: Raccoon Creek

8.5 Mi. S Bridgeport, Lawrence, IL

Built 2021 Load: 36.6 t ADT: 650

CH 22 ELDENA RD

Good

Over: THREE MILE BRANCH

1.2 MI S OF US 52, Lee, IL

Built 2005 Load: 36.6 t ADT: 300

TR 113B

Good

Over: FELKY SLOUGH

2425 E, 2000 N, Livingston, IL

Built 1962 Load: 36.6 t ADT: 100

TR 4

Good

Over: DEER CREEK

1 MI NW TABOR, Logan, IL

Built 1964 Load: 36.6 t ADT: 25

NIANTIC RD

Good

Over: S FORK LAKE FORK BCH

3.5 MI S LATHAM, Logan, IL

Built 1960 Load: 36.6 t

TR 92

Good

Over: DRY BRANCH CREEK

.14 MI. S US 51, Macon, IL

Built 2001 Load: 36.6 t ADT: 225

ILL 108

Good

Over: LICK CREEK

2.1 M W ILL 111, Macoupin, IL

Built 1930 Load: 36.6 t ADT: 800

FAS 734

Good

Over: BIG BRANCH CR.

0.3 MI W SAWYERVILLE, Macoupin, IL

Built 1955 Load: 36.6 t ADT: 1,200

IL 140

Good

Over: UPRR

3.1mi W of I-55, Madison, IL

Built 1985 Load: 36.6 t ADT: 4,800

HORSESHOE LAKE RD

Good

Over: CAHOKIA Canal

1/2 MI W OF I-255, Madison, IL

Built 1995 Load: 36.6 t ADT: 9,600

ILL 143

Good

Over: STREAM

.5 MI E IL 111 W 310, Madison, IL

Built 1995 Load: 36.6 t ADT: 12,100

TR 281 LOWER MARIN

Good

Over: WENDELL BRANCH

1.0 MI NE TROY, Madison, IL

Built 2005 Load: 36.6 t ADT: 575

TR-226

Good

Over: E Fk Kaskaskia River

4.0M NW Alma, Marion, IL

Built 1977 Load: 36.6 t ADT: 50

TR-277

Good

Over: SOUTH CREEK

2 MI S SALEM, Marion, IL

Built 1984 Load: 36.6 t ADT: 75

JONESBORO ROAD

Good

Over: TRIB Q DITCH WEST BR

1050N-0600E, Massac, IL

Built 1991 Load: 36.6 t ADT: 1,200

TR 97

Good

Over: SEVENMILE CREEK

0.25 MI E TR 122, Massac, IL

Built 1993 Load: 36.6 t ADT: 175

TR 420 B

Good

Over: MONEY CREEK

4.5 MI SW CLARKSVILL, McLean, IL

Built 1979 Load: 36.6 t ADT: 50

FAS 472 CH 12

Good

Over: MONEY CREEK

2.5 MILE N TOWANDA, McLean, IL

Built 2011 Load: 36.6 t ADT: 2,150

Showing 22,601-22,650 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.