State profile · Near median Poor share

Illinois bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in Illinois, based on the FHWA National Bridge Inventory.

27,743
Public bridges
41.2%
Good condition
7.9%
Poor condition

Data updated May 2026

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 whose lowest applicable component is rated 0-4

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 - Poor-condition share 26.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Illinois48.2%42.6%9.2%GoodFairPoor
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 by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Illinois on the same metric.

RI

Rhode Island

7.69% top marginal rate
Structure
Progressive
Burden @ $100K
$78

NE

Nebraska

7.73% top marginal rate
Structure
Progressive
Burden @ $100K
$15,571
Selected

IL

Illinois

7.88% top marginal rate
Structure
Progressive
Burden @ $100K
$27,743

MA

Massachusetts

7.96% top marginal rate
Structure
Progressive
Burden @ $100K
$5,314

MO

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 the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

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

Poor

Over: WILSON CREEK

NE-35-T3NR2E, Fulton, IL

Built 1935 Load: 1.3 t ADT: 10

TR 10-B

Poor

Over: KING CREEK

W EDGE OF MINERAL, Bureau, IL

Built 1899 Load: 1.6 t ADT: 10

TR-6

Poor

Over: DRAINAGE DITCH

3.5 MI NE DIETERICH, Effingham, IL

Built 1909 Load: 1.6 t ADT: 25

TR208K(TWIN BRIDGE

Poor

Over: BIG CREEK

NE EDGE MT ZION, Macon, IL

Built 1967 Load: 1.9 t ADT: 375

All Bridges in Illinois

TR 354

Poor

Over: COVEL CREEK

E 21ST N 2240, LaSalle, IL

Built 1973 Load: 30.8 t ADT: 25

TR-243

Poor

Over: LITTLE BONPAS CREEK

0.25 MI W HELENA, Lawrence, IL

Built 1988 Load: 30.8 t ADT: 150

US 24

Poor

Over: BR S FK VERMILION RV

1.72 MI E OF ILL 47, Livingston, IL

Built 1951 Load: 30.8 t ADT: 2,950

CH 25(FAU 7454)

Poor

Over: SANGAMON RIVER

2.5 MI N OF OAKLEY, Macon, IL

Built 1981 Load: 30.8 t ADT: 1,300

N SEMINARY /FAU 89

Poor

Over: BLACK CREEK

0.25 N BELTLINE, Madison, IL

Built 1966 Load: 30.8 t ADT: 4,600

FAS 441 - CH 9

Poor

Over: CARTER CR

NE-24-T4NR2W, McDonough, IL

Built 1955 Load: 30.8 t ADT: 750

TR 150

Poor

Over: TRIB LITTLE INDIAN

1 MI N ARCARIA, Morgan, IL

Built 1982 Load: 30.8 t ADT: 75

MULFORD RD

Poor

Over: KILBUCK CR

2.5 MI SE LINDENWOOD, Ogle, IL

Built 1979 Load: 30.8 t ADT: 750

STREITMATTER RD

Poor

Over: HENRY CREEK

SE1/4 4 HALLOCK TWP, Peoria, IL

Built 1984 Load: 30.8 t ADT: 75

ILL 145

Poor

Over: STREAM

2.6 MI N ILL 146, Pope, IL

Built 1947 Load: 30.8 t ADT: 1,150

ILL 89

Poor

Over: CLEAR CREEK

1.39 MI N OF ILL 18, Putnam, IL

Built 1928 Load: 30.8 t ADT: 1,550

CH 16

Poor

Over: CASE CREEK

2 M E OF MILAN, Rock Island, IL

Built 1983 Load: 30.8 t ADT: 4,450

N 89TH ST

Poor

Over: CREEK

300 FT. S. BUNKUM RD, St. Clair, IL

Built 1965 Load: 30.8 t ADT: 75

FAS-1702 (CH-11)

Poor

Over: E BR BRUSHY CREEK

1.75 MI E FLAT ROCK, Crawford, IL

Built 1967 Load: 31.1 t ADT: 550

STORM RD TR-180

Poor

Over: EAST FK MAZON RIVER

.33 MI S STONEWALL R, Grundy, IL

Built 1979 Load: 31.1 t ADT: 50

FAI 80 EB

Poor

Over: MINERAL CREEK

2.9 MI E JCT I74, Henry, IL

Built 1961 Load: 31.1 t ADT: 10,300

FAI 80 WB

Poor

Over: MINERAL CREEK

2.9 MI E JCT I74, Henry, IL

Built 1961 Load: 31.1 t ADT: 10,300

US 45-52

Poor

Over: LANGAN CR

5.15 MI N OF US 52-IL 49, Iroquois, IL

Built 1952 Load: 31.1 t ADT: 3,650

TR 345B

Poor

Over: TRIB LITTLE MUD CK

4MI W CISSNA PARK, Iroquois, IL

Built 1920 Load: 31.1 t ADT: 50

FAS-917

Poor

Over: Worthern Bayou

E LINE SEC 20-9-3, Jackson, IL

Built 1976 Load: 31.1 t ADT: 800

CH 54

Poor

Over: TOWER CR

1.5 MI W OF MOMENCE, Kankakee, IL

Built 1975 Load: 31.1 t ADT: 3,050

TR 128A

Poor

Over: TOMAHAWK CR

E 7TH N 3610, LaSalle, IL

Built 1963 Load: 31.1 t ADT: 25

TR-1

Poor

Over: EAGLE CR

320 E, 3300 N, Livingston, IL

Built 1965 Load: 31.1 t ADT: 200

FAS 1737

Poor

Over: JOE'S CRK

2.5 NW HETTICK, Macoupin, IL

Built 1967 Load: 31.1 t ADT: 200

TR 321

Poor

Over: MDL FK SHOAL CR

4 MI SW HILLSBORO, Montgomery, IL

Built 1978 Load: 31.1 t ADT: 75

FAS 835-CH 12

Poor

Over: MUD CREEK

WASHINGTON CO LINE, Perry, IL

Built 1958 Load: 31.1 t ADT: 775

TR 318

Poor

Over: SCAB BRANCH

5.0 MI E RUSHVILLE, Schuyler, IL

Built 1964 Load: 31.1 t ADT: 50

WATERLOO RD/ FAS 8

Poor

Over: GERHARDT CREEK

0.01MI N STC-MON LN, St. Clair, IL

Built 1961 Load: 31.1 t ADT: 1,850

MUD CREEK TR 308

Poor

Over: MUD CREEK

1.5 MI N ILL 13, St. Clair, IL

Built 1969 Load: 31.1 t ADT: 750

TR 188

Poor

Over: BR NORTH CREEK

1.5 MI S-1.75 W HOYL, Washington, IL

Built 1915 Load: 31.1 t ADT: 10

TR-426

Poor

Over: MARTIN CREEK

1.5M E JEFFERSONVILL, Wayne, IL

Built 1909 Load: 31.1 t ADT: 100

YORKTOWN ROAD

Poor

Over: COUNTY DITCH NO. 1

4 MI NW TAMPICO, Whiteside, IL

Built 1979 Load: 31.1 t ADT: 325

TR 69 C

Poor

Over: E BRANCH SALT FORK R

3.6 MI SE RANTOUL, Champaign, IL

Built 1984 Load: 31.4 t ADT: 50

TR-255

Poor

Over: SUTTON CREEK

2.5 MI SW OSKALOOSA, Clay, IL

Built 1969 Load: 31.4 t ADT: 50

LEMONT RD

Poor

Over: DES P RIV, CANAL, RR

0.30 M S DUPAGE CO, Cook, IL

Built 1983 Load: 31.4 t ADT: 24,300

IL 1 (HALSTED ST

Poor

Over: CAL UNION DITCH

@ 161ST .25 M S US6, Cook, IL

Built 1984 Load: 31.4 t ADT: 19,200

LASALLE STREET

Poor

Over: TROLLEY CAR TUNNEL

S. OF CHICAGO RIVER, Cook, IL

Built 1911 Load: 31.4 t ADT: 4,750

FAU-7331 (Walnut S

Poor

Over: Ten Mile Creek

NW EDGE CLINTON, De Witt, IL

Built 1974 Load: 31.4 t ADT: 600

GORE RD. TR-41

Poor

Over: W. FK. NETTLE CR

0.35 MI W.ASHTON RD, Grundy, IL

Built 1990 Load: 31.4 t ADT: 425

TR 81

Poor

Over: HENDERSON CREEK

SE-26-T11NR5W, Henderson, IL

Built 1984 Load: 31.4 t ADT: 100

TR-282

Poor

Over: Covel Creek

E 16TH N 2275, LaSalle, IL

Built 1966 Load: 31.4 t ADT: 100

CO RD 15

Poor

Over: WALBRIDGE CREEK

E 24TH,N 2885, LaSalle, IL

Built 1971 Load: 31.4 t ADT: 4,700

FAP-332 (ILL-1)

Poor

Over: EMBARRAS RV OVERFLOW

.5 MI N US-50, Lawrence, IL

Built 1923 Load: 31.4 t ADT: 5,400

TR 258

Poor

Over: DRAIN DITCH

4 MI NE BILLET, Lawrence, IL

Built 2002 Load: 31.4 t ADT: 150

CO HWY 16 FAS 355

Poor

Over: DIAMOND CREEK

1.5 MI S LONGPOINT, Livingston, IL

Built 1933 Load: 31.4 t ADT: 725

FAS 644(CH 55)

Poor

Over: OVERFLOW OF SANGAMON

3.3 MI S NIANTIC, Macon, IL

Built 1979 Load: 31.4 t ADT: 550

Muni 6802 -Traughb

Poor

Over: FINLEY CREEK

1.5 MI S OF MT ZION, Macon, IL

Built 1981 Load: 31.4 t ADT: 150

FAS 546(CH 21)

Poor

Over: Trib N Fork Creek

6.8 MI W OF MAROA, Macon, IL

Built 1983 Load: 31.4 t ADT: 300

CH 49 WIESEMAN RD.

Poor

Over: WEST FORK CAHOKIA CR

2.6 NW WORDEN, Madison, IL

Built 1988 Load: 31.4 t ADT: 275

HEMSTOCK ROAD

Poor

Over: UNNAMED STREAM

2.5 MI N ROCHELLE, Ogle, IL

Built 1980 Load: 31.4 t ADT: 400

Showing 27,051-27,100 of 27,743 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.