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

LEGION HALL RD

Good

Over: KICKAPOO CREEK

SW-12-T10NR7E, Peoria, IL

Built 1980 Load: 38.6 t ADT: 250

TR 51

Good

Over: SANGAMON RIVER TRIB

.5 MI SW CENTERVILLE, Piatt, IL

Built 2021 Load: 38.6 t ADT: 50

IL 3

Good

Over: HORSE CREEK

1.5 MI. N OF RUMA, Randolph, IL

Built 2006 Load: 38.6 t ADT: 4,650

CITY STREET

Good

Over: BOGAROS RUN

0.2 MI E OLNEY, Richland, IL

Built 1991 Load: 38.6 t ADT: 150

ILL 34

Good

Over: TRIB TO S. FORK

2.7 MI E OF ILL 145, Saline, IL

Built 2004 Load: 38.6 t ADT: 1,650

TR 338

Good

Over: EAGLE CREEK

1 MI. W GALLATIN CO, Saline, IL

Built 1982 Load: 38.6 t ADT: 10

TR 112 A

Good

Over: WALNUT CREEK

3 MI NNE WINCHESTER, Scott, IL

Built 1984 Load: 38.6 t ADT: 25

ILL 159

Good

Over: BR RICHLAND CREEK

under IL 15 bridges, St. Clair, IL

Built 1967 Load: 38.6 t ADT: 14,200

AUGUSTIN RD-TR 91A

Good

Over: PRAIRIE CREEK

NE-17-T24NR3W, Tazewell, IL

Built 1966 Load: 38.6 t ADT: 100

TR 257

Good

Over: TRIB W FORK SUGAR CR

SW-2-T22NR3W, Tazewell, IL

Built 2020 Load: 38.6 t ADT: 300

BAUER RD

Good

Over: DUTCH CREEK

0.7 MI N OF TR 217, Union, IL

Built 2019 Load: 38.6 t ADT: 50

IL 49(FAP 840)

Good

Over: WHISKY CREEK

1.8 MI S OF RANKIN, Vermilion, IL

Built 1986 Load: 38.6 t ADT: 1,100

TR 307

Good

Over: LITTLE DRY FORK

5.5 MI N SIMS, Wayne, IL

Built 1998 Load: 38.6 t ADT: 50

TR 29-DEAN ROAD

Good

Over: POND CREEK TRIB

4 MI NE PITTSBURG, Williamson, IL

Built 1998 Load: 38.6 t ADT: 250

IL 251 FR RD

Good

Over: DRY CREEK

.2 MI N MCCURRY RD, Winnebago, IL

Built 1992 Load: 38.6 t ADT: 850

GLEASMAN RD

Good

Over: UNNAMED

0.11 E OF RIVERVIEW, Winnebago, IL

Built 2022 Load: 38.6 t ADT: 1,400

HARRISON AVE

Good

Over: CONCRETE CHANNEL

.37 MI E OF 11TH ST, Winnebago, IL

Built 2016 Load: 38.6 t ADT: 16,300

CH 1 (FAS 357)

Good

Over: TRIB TO SNAG CRK

1 Mi E of Ill Rte 89, Woodford, IL

Built 2016 Load: 38.6 t ADT: 625

FAS 1603 (CH 39)

Good

Over: Grindstone Creek

1.28 mi W of FAS 432B, Adams, IL

Built 2023 Load: 38.9 t ADT: 100

TR-40

Good

Over: ORCHARD CREEK

NE1/4 SEC27 T15S R3W, Alexander, IL

Built 2003 Load: 38.9 t ADT: 10

I-80 EB

Good

Over: KING CREEK

1.04 E/HENRY CO LN, Bureau, IL

Built 1963 Load: 38.9 t ADT: 8,950

I-80 WB

Good

Over: KING CREEK

1.05 E/HENRY CO LN, Bureau, IL

Built 1963 Load: 38.9 t ADT: 8,950

IL 92 FAP 587

Good

Over: WALNUT CREEK

2 MI. W. OF IL 26, Bureau, IL

Built 1999 Load: 38.9 t ADT: 1,300

FAS 502(CH 20)

Good

Over: SPOON RIVER TRIB

2 MI W OF ROYAL, Champaign, IL

Built 1991 Load: 38.9 t ADT: 1,150

FAS 529(CH 17)

Good

Over: E LAKE FORK DITCH

IVESDALE, Champaign, IL

Built 1993 Load: 38.9 t ADT: 1,200

WINDSOR RD(FAU 714

Good

Over: DITCH

0.2 MI W of 1st St., Champaign, IL

Built 1989 Load: 38.9 t ADT: 13,700

ILL 161

Good

Over: SUGAR CREEK BR

0.9 E ALBERS, Clinton, IL

Built 1934 Load: 38.9 t ADT: 4,800

FAS 1669 (IL 316)

Good

Over: Stream

1.23 MI NE MATTOON, Coles, IL

Built 2023 Load: 38.9 t ADT: 2,200

CERMAK RD (22ND ST

Good

Over: ADDISON CREEK

1.4 M E US 45, Cook, IL

Built 1959 Load: 38.9 t ADT: 15,100

SAUK TRAIL

Good

Over: LANSING DRN. DITCH

0.3 M E OF TORRENCE, Cook, IL

Built 1986 Load: 38.9 t ADT: 10,050

DAMEN AVE

Good

Over: BNSF & CN RR & Land

2900 S & 2000 W, Cook, IL

Built 1930 Load: 38.9 t ADT: 21,900

COAST GUARD DRIVE

Good

Over: JACKSON PK LAGOON

6600 S & 2050 E, Cook, IL

Built 1904 Load: 38.9 t ADT: 36,700

FAP-781 (ILL-33)

Good

Over: LITTLE CREEK

1.25 MI W ROBINSON, Crawford, IL

Built 1987 Load: 38.9 t ADT: 7,250

TR 258

Good

Over: RANGE CREEK

4 MI E OF GREENUP, Cumberland, IL

Built 1983 Load: 38.9 t ADT: 150

TR 175

Good

Over: Range Creek

3 Mi SE Greenup, Cumberland, IL

Built 2021 Load: 38.9 t ADT: 50

CROSS ST.

Good

Over: SUGAR CREEK

1.3 MI S ST CHARLES, DuPage, IL

Built 1968 Load: 38.9 t ADT: 125

TR 25

Good

Over: SUGAR CREEK

2 MI N BLOOD, Edwards, IL

Built 2012 Load: 38.9 t ADT: 50

FAS-708 (CH-12)

Good

Over: BISHOP CREEK

3.75 MI WNW EBERLE, Effingham, IL

Built 1988 Load: 38.9 t ADT: 400

TR 300

Good

Over: LITTLE BISHOP CREEK

1 MI SE ELLIOTSTOWN, Effingham, IL

Built 2002 Load: 38.9 t ADT: 100

ILL 115

Good

Over: E BR VERMILION RIVER

3.25 MI N OF ILL 9, Ford, IL

Built 1987 Load: 38.9 t ADT: 1,050

FAS 359 PATTON

Good

Over: STREAM

520N 1900E, Ford, IL

Built 1985 Load: 38.9 t ADT: 950

CH 2 LODA LAKE RD

Good

Over: STREAM

1110E,800N, Ford, IL

Built 2005 Load: 38.9 t ADT: 400

CH 23 CABERY RD

Good

Over: STREAM

1490E,4100N, Ford, IL

Built 2022 Load: 38.9 t ADT: 400

FAS 335, CH2

Good

Over: Wall Town Dr. Ditch

1450 E 800N, Ford, IL

Built 2020 Load: 38.9 t ADT: 400

CH 18 BUCKINGHAM R

Good

Over: STREAM

1600E,4000N, Ford, IL

Built 2022 Load: 38.9 t ADT: 50

TR 88 BUTTON

Good

Over: STREAM

2500E,10N, Ford, IL

Built 2019 Load: 38.9 t ADT: 25

MAPLE LN - TR 189

Good

Over: BIG CREEK

NW-34-T7NR4E, Fulton, IL

Built 1980 Load: 38.9 t ADT: 850

CH 16C(SHERRILL RD

Good

Over: VALLEY RUN

.46 MILE W IL 47, Grundy, IL

Built 2013 Load: 38.9 t ADT: 150

FAP 776 (IL 142)

Good

Over: TRIB TO CONTRARY CRK

10 MI S IL 14, Hamilton, IL

Built 2009 Load: 38.9 t ADT: 2,100

FAP-776 (ILL 142)

Good

Over: STREAM

.2 MI S ILL-14, Hamilton, IL

Built 1992 Load: 38.9 t ADT: 3,150

Showing 23,101-23,150 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.