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

CH 8

Good

Over: LICK CREEK

1.75 M N OF MULBERRY, Bond, IL

Built 1996 Load: 34.0 t ADT: 850

FAS-39 (HUNTER RD)

Good

Over: BEAVER CREEK

3.0 MI NW OF CAPRON, Boone, IL

Built 2011 Load: 34.0 t ADT: 1,550

FAP 326 (IL 47)

Good

Over: CAMP CREEK

2.5 MI N OF IL 10, Champaign, IL

Built 1999 Load: 34.0 t ADT: 4,800

ILL 48

Good

Over: PRAIRIE FORK

NE EDGE HARVEL, Christian, IL

Built 1999 Load: 34.0 t ADT: 1,950

FAU-2682 WHEELING

Good

Over: MCDONALD CR

0.2 PALATINE P25, Cook, IL

Built 1960 Load: 34.0 t ADT: 5,400

LAKE STREET

Good

Over: UNION STATION RR TRK

200N & 360W TO 500W, Cook, IL

Built 1916 Load: 34.0 t ADT: 7,600

MDWY DN CRC RAMP

Good

Over: PARK GAR EXIT RD

TERMINAL TO NO ENT, Cook, IL

Built 1998 Load: 34.0 t ADT: 1,000

FAS 483(CH 17)

Good

Over: STREAM

5.5 MI S WAYNESVILLE, De Witt, IL

Built 1989 Load: 34.0 t ADT: 550

CH 11(FAS 666)

Good

Over: DRAINAGE DITCH

2.5 MI S OF ARTHUR, Douglas, IL

Built 2007 Load: 34.0 t ADT: 1,150

TR 95

Good

Over: SHILOH DRAIN DITCH 3

4.5 MI W OF EDGAR, Edgar, IL

Built 1975 Load: 34.0 t ADT: 25

TR-277

Good

Over: FULFER CREEK

3.5 MI S BETHLEHEM, Effingham, IL

Built 1986 Load: 34.0 t ADT: 150

TR 165 SCULLY ROAD

Good

Over: JOHNNY RUN CREEK

.27 MI E LA SALLE RD, Grundy, IL

Built 1981 Load: 34.0 t ADT: 50

SCULLY RD TR 165A

Good

Over: TRIB E FORK MAZON RV

.84 MI E GORMAN RD, Grundy, IL

Built 1993 Load: 34.0 t ADT: 50

WAVERLY STREET

Good

Over: NETTLE CREEK

E OF UNION ST, Grundy, IL

Built 1975 Load: 34.0 t ADT: 2,450

IL 96

Good

Over: SONORA CREEK

4.9M S NAUVOO CENTER, Hancock, IL

Built 1981 Load: 34.0 t ADT: 1,050

IL 96

Good

Over: DRAINAGE DITCH

2.2 M E IL 9 NIOTA, Hancock, IL

Built 2013 Load: 34.0 t ADT: 1,550

CH 2

Good

Over: CREEK

0.5 MI S.W. ORAVILLE, Jackson, IL

Built 1979 Load: 34.0 t ADT: 150

TR 217A

Good

Over: TALBOTT HOLLOW

0.5 M S OF ILL 3, Jackson, IL

Built 1991 Load: 34.0 t ADT: 50

SPRINGER RIDGE RD

Good

Over: TRIB TO DRURY CR

0.2 MI N MAKANDA, Jackson, IL

Built 1999 Load: 34.0 t ADT: 225

NESLER RD

Good

Over: FITCHIE CREEK

0.75 MI NE BOWES RD, Kane, IL

Built 2017 Load: 34.0 t ADT: 6,850

CH 8

Good

Over: TOWER CR

4.2 MI E ST.GEORGE, Kankakee, IL

Built 1952 Load: 34.0 t ADT: 1,900

TR 192

Good

Over: SPRING CREEK

5 MI NE ST. ANNE, Kankakee, IL

Built 1971 Load: 34.0 t ADT: 50

TR 98

Good

Over: GAR CREEK

4 MI SW OFKANKAKEE, Kankakee, IL

Built 1981 Load: 34.0 t ADT: 100

FOREST AVENUE

Good

Over: RAVINE NO. 7

1.3 M S of Prospect, Lake, IL

Built 2018 Load: 34.0 t ADT: 175

TR 107

Good

Over: VERMILION CREEK

N 42ND E 815, LaSalle, IL

Built 1974 Load: 34.0 t ADT: 100

IL 251

Good

Over: STREAM

.2MI. N. OF MENDOTA, Lee, IL

Built 2003 Load: 34.0 t ADT: 1,600

IL 251

Good

Over: GREEN RIVER TRIB.

4 MI. N. OF US 30, Lee, IL

Built 1995 Load: 34.0 t ADT: 1,100

WOLF ROAD

Good

Over: BR OF BUREAU CREEK

1.2 M S OF US RT 52, Lee, IL

Built 1985 Load: 34.0 t ADT: 10

GERMAN ROAD

Good

Over: BUREAU CREEK

0.4 M N CHICAGO RD, Lee, IL

Built 1985 Load: 34.0 t ADT: 50

COLUMBIA ST

Good

Over: GOOSEBERRY CREEK

S OF WILLIAMS ST, Livingston, IL

Built 1965 Load: 34.0 t ADT: 675

OLD ALTON-EDW RD C

Good

Over: INDIAN CREEK

BETWEEN EDWVLL-ROXAN, Madison, IL

Built 1990 Load: 34.0 t ADT: 1,400

I-39/US 51 NB

Good

Over: TRIB SIX MILE CREEK

3.7 MI N OF I-55, McLean, IL

Built 1989 Load: 34.0 t ADT: 8,650

OTTER RD.

Good

Over: BR. MUD CREEK

4.0 N.W. LEAF RIVER, Ogle, IL

Built 1960 Load: 34.0 t ADT: 50

ILL 89

Good

Over: ALLFORKS CREEK NORTH

1.2 MI N OF IL 71, Putnam, IL

Built 2012 Load: 34.0 t ADT: 4,100

COUNTY HIGHWAY 59

Good

Over: LAKE GEORGE

5 MI NE ILLINOIS CTY, Rock Island, IL

Built 1966 Load: 34.0 t ADT: 575

I-55 (NB)

Good

Over: BRUSH CREEK

.7MI S IL 104 INTCHG, Sangamon, IL

Built 1972 Load: 34.0 t ADT: 15,550

I-55 (SB)

Good

Over: BRUSH CREEK

.7MI S IL 104 INTCHG, Sangamon, IL

Built 1972 Load: 34.0 t ADT: 15,550

I-55 (SB)/ I-72 (W

Good

Over: LOST BRIDGE TRAIL BP

.3M S IL29/S GRND AV, Sangamon, IL

Built 1995 Load: 34.0 t ADT: 25,400

IL 101

Good

Over: LAMOINE RIVER

1M E IL 99, Schuyler, IL

Built 2011 Load: 34.0 t ADT: 400

I-64WB, Ramp to 18

Good

Over: NSRR

0.4 mi W of 25th St., St. Clair, IL

Built 1974 Load: 34.0 t ADT: 37,900

ILL 161

Good

Over: RICHLAND CREEK

.5 MI E ILL 159, St. Clair, IL

Built 1987 Load: 34.0 t ADT: 19,600

IL 75

Good

Over: DRAINAGE

.24 MI E OF TOWER RD, Stephenson, IL

Built 2022 Load: 34.0 t ADT: 2,300

FAS-811 (SBI-1)

Good

Over: STREAM

.5 MI N BELLMONT, Wabash, IL

Built 1997 Load: 34.0 t ADT: 425

POLO ROAD

Good

Over: JORDAN CREEK

7 MI N. STERLING, Whiteside, IL

Built 1968 Load: 34.0 t ADT: 150

FAS 909 (UNMARKED)

Good

Over: DITCH

0.27 MI W OF MARION, Williamson, IL

Built 1993 Load: 34.0 t ADT: 5,700

IL 92

Good

Over: Hennepin FeederCanal

1.0mi E of IL 172, Bureau, IL

Built 2022 Load: 34.3 t ADT: 600

I-72

Good

Over: STREAM

N OF STALEY, Champaign, IL

Built 1968 Load: 34.3 t ADT: 17,300

IL 130(FAP 808)

Good

Over: DRAINAGE DITCH

E EDGE OF URBANA, Champaign, IL

Built 1987 Load: 34.3 t ADT: 7,750

MT AUBURN RD

Good

Over: BUCKHART CREEK

3.5M S CH2,MT AUBURN, Christian, IL

Built 1987 Load: 34.3 t ADT: 650

CH 8(FAS 688)

Good

Over: DOYLES CREEK

4.8 MI W CLARKSVILLE, Clark, IL

Built 1941 Load: 34.3 t ADT: 1,100

Showing 22,101-22,150 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.