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

FAS-461 (CH-16)

Good

Over: Mackinaw River

SW-13-T24NR6W, Tazewell, IL

Built 2017 Load: 34.3 t ADT: 3,750

FAS 926

Good

Over: PORTERFIELD CREEK

3.3 MI E DONGOLA, Union, IL

Built 1978 Load: 34.3 t ADT: 650

CH 3

Good

Over: MIDDLE BRANCH

4.2 MI E ROSSVILLE, Vermilion, IL

Built 1985 Load: 34.3 t ADT: 300

FAP 823 (IL 15)

Good

Over: STREAM

NEAR EDWARDS CO LN, Wayne, IL

Built 2010 Load: 34.3 t ADT: 2,450

US 30

Good

Over: FRENCH CREEK

1 MI E OF MORRISON, Whiteside, IL

Built 1996 Load: 34.3 t ADT: 7,000

US 52

Good

Over: ROCK RUN CREEK

1.5 M E OF IL 59, Will, IL

Built 1992 Load: 34.3 t ADT: 19,700

MCDONALD ROAD

Good

Over: MCDONALD CREEK

0.3 M NW SWANSON RD, Winnebago, IL

Built 1983 Load: 34.3 t ADT: 2,250

FAIRVIEW AVE

Good

Over: SO BR OF KEITH CR

0.05 M S OF STATE ST, Winnebago, IL

Built 1986 Load: 34.3 t ADT: 7,900

FAP 719 (US 150)

Good

Over: DITCH

2 MI W CHAMPAIGN, Champaign, IL

Built 1998 Load: 34.7 t ADT: 7,100

FAU 7206

Good

Over: STREAM

E OF URBANA, Champaign, IL

Built 2013 Load: 34.7 t ADT: 525

TR 281

Good

Over: EAST LAKE FORK DITCH

1.5 MI E IVESDALE, Champaign, IL

Built 1972 Load: 34.7 t ADT: 50

CH 13

Good

Over: LITTLE VERM DITCH

3.3 MI N OF BROADLAN, Champaign, IL

Built 2021 Load: 34.7 t ADT: 425

FAS-694 (CH-1)

Good

Over: EMBARRAS RIVER

1 MI NW LANDES, Crawford, IL

Built 1969 Load: 34.7 t ADT: 625

CH-14

Good

Over: BRUSHY CREEK

1 MI N FLAT ROCK, Crawford, IL

Built 1977 Load: 34.7 t ADT: 300

TR 104(FAS 1657)

Good

Over: MUDDY CREEK

.7 MI N WOODBURY, Cumberland, IL

Built 1955 Load: 34.7 t ADT: 200

FAP 71(IL 54)

Good

Over: TRIB TO SALT CREEK

2 MI SW FARMER CITY, De Witt, IL

Built 1995 Load: 34.7 t ADT: 2,000

FAS-813

Good

Over: WALSER CREEK

2MI SE WEST SALEM, Edwards, IL

Built 1984 Load: 34.7 t ADT: 325

FAS-1709 (CH-8)

Good

Over: LITTLE WABASH RIVER

4.5 MI N EFFINGHAM, Effingham, IL

Built 1980 Load: 34.7 t ADT: 425

TR 136

Good

Over: WALLEY RUN

5.5 MI W MINOOKA, Grundy, IL

Built 1999 Load: 34.7 t ADT: 25

TR 74 Verona Road

Good

Over: THUNDER CREEK

State Rd/prairie RD, Grundy, IL

Built 2012 Load: 34.7 t ADT: 225

SCULLY RD TR 165

Good

Over: WEST FK MAZON RIVER

.14 MI W ZABEL RD, Grundy, IL

Built 1980 Load: 34.7 t ADT: 50

TR159A STONEWALL R

Good

Over: TRIB E FK MAZON RIV

.26 MI W STORM RD, Grundy, IL

Built 1980 Load: 34.7 t ADT: 50

TR 274

Good

Over: BR OF EDWARDS RIVER

5.5 MI NE BISHOPHILL, Henry, IL

Built 1901 Load: 34.7 t ADT: 10

CH 20

Good

Over: MAIN UNION SP. DITCH

41/2 MI. S.W. HOOPPO, Henry, IL

Built 2008 Load: 34.7 t ADT: 300

IL 13 EB

Good

Over: CRAB ORCHARD CREEK

0.67MI W REED STA RD, Jackson, IL

Built 2021 Load: 34.7 t ADT: 25,800

TR 15

Good

Over: BRANCH CREEK

.2 MI E OF CO. LINE, Jackson, IL

Built 1978 Load: 34.7 t ADT: 75

TR 212

Good

Over: LEWIS CREEK

NE CORN. SEC 20-9-2, Jackson, IL

Built 1979 Load: 34.7 t ADT: 125

FAS 1923

Good

Over: CAVE CREEK

WEST EDGE OF POMONA, Jackson, IL

Built 1982 Load: 34.7 t ADT: 150

TR 285

Good

Over: MUD CREEK

N LNE SC26MURPHY TWP, Jackson, IL

Built 1981 Load: 34.7 t ADT: 850

TR 160

Good

Over: TRIB RATTLESNAKE CK

.75 MI N RTE 4, Jackson, IL

Built 1992 Load: 34.7 t ADT: 10

TR 202 (SAUPE ROAD

Good

Over: CAMP CREEK

2.75 MI N OF AVA RD, Jackson, IL

Built 1995 Load: 34.7 t ADT: 50

TR 109

Good

Over: LITTLE CACHE CREEK

S 1/2 SEC22 T12S,R3E, Johnson, IL

Built 1974 Load: 34.7 t ADT: 150

ILL 126

Good

Over: E BR AUX SABLE CR

8.8 MI E OF ILL 71, Kendall, IL

Built 1997 Load: 34.7 t ADT: 15,800

FAU 3799/ River Ro

Good

Over: Rob Roy Creek

1.0M South of Plano, Kendall, IL

Built 2021 Load: 34.7 t ADT: 4,100

WASHINGTON STREET

Good

Over: DESPLAINES RIVER

.2M E OF ILL 21, Lake, IL

Built 1972 Load: 34.7 t ADT: 10,400

GREEN WING RD

Good

Over: GREEN RIVER TRIB

0.4 MI N OF SHAW RD, Lee, IL

Built 1980 Load: 34.7 t ADT: 200

TR 10A

Good

Over: EAGLE CREEK

3275 N, 200 E, Livingston, IL

Built 1980 Load: 34.7 t ADT: 50

TR251

Good

Over: STREAM

2630E,300N, Livingston, IL

Built 1994 Load: 34.7 t ADT: 450

I-55 FRNT ROAD WES

Good

Over: KICKAPOO CREEK

.3 M NE LAWNDALE, Logan, IL

Built 2018 Load: 34.7 t ADT: 1,800

FAS 565/CH 15

Good

Over: SUGAR CREEK

2 MI SO NEW HOLLAND, Logan, IL

Built 1988 Load: 34.7 t ADT: 600

BURTON VIEW RD

Good

Over: SUGAR CK OVERFLOW

2.2 MI N BURTONVIEW, Logan, IL

Built 1964 Load: 34.7 t ADT: 300

STAR RTE(MS8050)

Good

Over: STREAM

E SIDE LK DECATUR, Macon, IL

Built 1940 Load: 34.7 t ADT: 200

IL 140

Good

Over: NSRR

2.9mi W of I-55, Madison, IL

Built 1985 Load: 34.7 t ADT: 4,800

PIN OAK RD/ TR 225

Good

Over: W. TRIB. SILVER CRK

3.3 MI E OF EDWARDSV, Madison, IL

Built 1989 Load: 34.7 t ADT: 150

I-24 EB

Good

Over: BEAR CREEK

4 MI S JOHNSON CO, Massac, IL

Built 2023 Load: 34.7 t ADT: 10,600

IL 31 & 120

Good

Over: BOONE CREEK

1.6M W OF CHAPEL HIL, McHenry, IL

Built 1990 Load: 34.7 t ADT: 30,300

I-39/US 51 SB

Good

Over: TRIB SIX MILE CREEK

3.69 MI N OF I-55, McLean, IL

Built 1989 Load: 34.7 t ADT: 8,650

TR 475

Good

Over: BRANCH SALT CREEK

3.2 MI NW BELLFLOWER, McLean, IL

Built 1977 Load: 34.7 t ADT: 75

TR 500

Good

Over: BR N FORK SALT CREEK

8 MI WNW BELLFLOWER, McLean, IL

Built 1977 Load: 34.7 t ADT: 50

TR 512

Good

Over: BR OF ROOKS CREEK

3.0 MI SW WESTON, McLean, IL

Built 1982 Load: 34.7 t ADT: 75

Showing 22,201-22,250 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.