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 160

Poor

Over: SANDY CREEK/TR 18

6 MI ESE WINCHESTER, Scott, IL

Built 1986 Load: 39.2 t ADT: 75

TR 158

Poor

Over: TRIB. LITTLE SWAN CR

SE-24-T8NR2W, Warren, IL

Built 1992 Load: 39.2 t ADT: 50

I- 80 EB

Poor

Over: JOLIET JNCT PED/BIKE

1 M W IL 7, Will, IL

Built 1964 Load: 39.2 t ADT: 19,350

I- 80 WB

Poor

Over: JOLIET JNCT PED/BIKE

1 M W OF IL 7, Will, IL

Built 1964 Load: 39.2 t ADT: 19,350

WAYNESVILLE ROAD

Poor

Over: KICKAPOO CREEK

1.5 S 3 MI E ATLANTA, Logan, IL

Built 1980 Load: 39.5 t ADT: 325

US 45

Poor

Over: OVFW NF SALINE RIV

0.5 MI N TEXAS CITY, Saline, IL

Built 1953 Load: 39.5 t ADT: 3,750

TR 298A

Poor

Over: RAYHILL SLOUGH

1M N ILL 177, St. Clair, IL

Built 1956 Load: 39.5 t ADT: 175

TR-239

Poor

Over: Br of Elkhorn Creek

3.0M NW Oakdale, Washington, IL

Built 1915 Load: 39.5 t ADT: 25

HILLSIDE RD

Poor

Over: OTTER CREEK

7 MI NW OF MORRISON, Whiteside, IL

Built 1986 Load: 39.5 t ADT: 100

TR 301

Poor

Over: HACKETT BRANCH

0.7 MI SE PESOTUM, Champaign, IL

Built 1966 Load: 39.9 t ADT: 775

CH 1

Poor

Over: BIG CREEK

NE-8-T5NR3E, Fulton, IL

Built 2004 Load: 39.9 t ADT: 100

TR-59 (Mermet Road

Poor

Over: SIELBECK DITCH

6.3MI NW METROPOLIS, Massac, IL

Built 2018 Load: 39.9 t ADT: 175

CEMETERY ROAD-TR

Poor

Over: BR OF WALNUT CREEK

S.CTR-14-T10NR5E, Peoria, IL

Built 1982 Load: 39.9 t ADT: 10

PARKER RD.

Poor

Over: LONG RUN CREEK

0.5 MI N W 143rd St., Will, IL

Built 1988 Load: 39.9 t ADT: 4,350

US 12,20,45 NB

Poor

Over: S&S & IM CNLS&ICG RR

0.9 M S I-55, Cook, IL

Built 1976 Load: 40.2 t ADT: 77,700

FAU-2652 S Villa A

Poor

Over: Sugar Creek

0.8 N IL-38/0.4 W 83, DuPage, IL

Built 1968 Load: 40.2 t ADT: 4,000

HOYLE ROAD

Poor

Over: 3 MILE BRANCH

1.3 M S R.I. ROAD, Lee, IL

Built 1982 Load: 40.2 t ADT: 100

I-55 BUSN LOOP

Poor

Over: Norfolk Southern Railway

0.49 MI E OF US 51, McLean, IL

Built 1940 Load: 40.2 t ADT: 25,000

PARKER RD

Poor

Over: SPRING CREEK

0.4 M S 167TH ST, Will, IL

Built 1994 Load: 40.2 t ADT: 3,600

ILL 97

Poor

Over: BIG CREEK

4 MI S OF CUBA, Fulton, IL

Built 1928 Load: 40.5 t ADT: 1,450

FAS 1600

Poor

Over: RAILROAD CREEK

IN HAMILTON, Hancock, IL

Built 1960 Load: 40.5 t ADT: 2,300

Coal Street

Poor

Over: Coal run Creek

0.5 Mi S. of Ill. 18, LaSalle, IL

Built 1984 Load: 40.5 t ADT: 125

TR 41

Poor

Over: CAMP CREEK

SW-19-T15NR3W, Mercer, IL

Built 1979 Load: 40.5 t ADT: 25

ILL 155

Poor

Over: PRAIRIE DU ROCHER CR

NEAR WCL P DU ROCHER, Randolph, IL

Built 1990 Load: 40.5 t ADT: 100

TR 86

Poor

Over: LAMOINE RIVER

1.0 MI W.BROOKLIN, Schuyler, IL

Built 1983 Load: 40.5 t ADT: 50

TR 244

Poor

Over: FLAT BRANCH

2.5MI SE STONINGTON, Christian, IL

Built 1987 Load: 40.8 t ADT: 50

US 20

Poor

Over: RUSH CREEK

.76 MI E LOGEMANN RD, Jo Daviess, IL

Built 1971 Load: 40.8 t ADT: 3,800

FAP-332 (ILL-1)

Poor

Over: FRENCH CREEK

2 MI S GRAYVILLE, White, IL

Built 1923 Load: 40.8 t ADT: 3,550

IL 40 FAP 646

Poor

Over: BN RR

SOUTH EDGE OF BUDA, Bureau, IL

Built 1982 Load: 41.1 t ADT: 1,100

FOSTER AVE

Poor

Over: N BR CHI RIV EAST

0.2 M E PULASKI RD, Cook, IL

Built 1933 Load: 41.1 t ADT: 19,100

OHIO ST FEEDER W A

Poor

Over: RR - UP,TRIB PARKING

0.5 M E I-94, Cook, IL

Built 1956 Load: 41.1 t ADT: 80,400

CRAWFORD AVE

Poor

Over: MIDLOTHIAN CR

0.25 M S ILL 83 P3, Cook, IL

Built 1979 Load: 41.1 t ADT: 16,800

TR-259

Poor

Over: RAYSE CREEK

3 MI W WOODLAWN, Jefferson, IL

Built 2006 Load: 41.1 t ADT: 50

FAS-801

Poor

Over: SUGAR CREEK

4 MI E BIRDS, Lawrence, IL

Built 1930 Load: 41.1 t ADT: 375

DUTCH ROAD - TR 66

Poor

Over: 5 MILE BRANCH

1 MI N US 30, Lee, IL

Built 1987 Load: 41.1 t ADT: 100

TR 408

Poor

Over: DROWNING FORK

SW-28-T7NR1W, McDonough, IL

Built 1977 Load: 41.1 t ADT: 225

ILL 13

Poor

Over: MID FORK SALINE RIV.

1.6 MI E HARRISBURG, Saline, IL

Built 1972 Load: 41.1 t ADT: 3,350

ILL 54

Poor

Over: WOLF CREEK

1.6M E BARCLAY, Sangamon, IL

Built 1941 Load: 41.1 t ADT: 2,150

RICHARD ST

Poor

Over: HICKORY CREEK

0.1 M N OF I-80, Will, IL

Built 1967 Load: 41.1 t ADT: 12,100

I- 55 WB STEVENSON

Poor

Over: RR - BNSF

0.6 M E US 45, Cook, IL

Built 1964 Load: 41.5 t ADT: 61,500

TR 8A

Poor

Over: WHITEDITCHCREEK

8 M S OF ELDRED, Greene, IL

Built 1987 Load: 41.5 t ADT: 10

HILLSBORO FILLMORE

Poor

Over: WEST BRANCH DRY FORK

1.8 MI W OF FILLMORE, Montgomery, IL

Built 1969 Load: 41.5 t ADT: 550

ILL 8 FARMINGTON R

Poor

Over: DRY RUN CREEK

W PEO NEAR B.PARK, Peoria, IL

Built 1928 Load: 41.5 t ADT: 9,400

PARKS SCH RD

Poor

Over: BR KICKAPOO CREEK

SE1/4 2 RADNOR TWP, Peoria, IL

Built 1975 Load: 41.5 t ADT: 325

SBI-15

Poor

Over: UNNAMED STREAM

3.5 MI W EDWARDS C L, Wayne, IL

Built 1921 Load: 41.5 t ADT: 10

COUNTY FARM RD

Poor

Over: W BRANCH DU PAGE RIV

0.5 MI S Sterns Rd, DuPage, IL

Built 1929 Load: 41.8 t ADT: 17,100

CH-21

Poor

Over: OWENS CREEK

3 MI. NW GOLDEN GATE, Wayne, IL

Built 2006 Load: 41.8 t ADT: 325

TR 207

Poor

Over: LONG BRANCH

4 MI W ASSUMPTION, Christian, IL

Built 1902 Load: 42.1 t ADT: 50

ILL 115

Poor

Over: CRANE CREEK

.2MI W OF BUCKINGHAM, Kankakee, IL

Built 1982 Load: 42.4 t ADT: 900

CH 9

Poor

Over: BIG SANDY CREEK

1.0 MI N GLASGOW, Scott, IL

Built 1987 Load: 42.4 t ADT: 400

Showing 26,901-26,950 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.