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 13

Good

Over: Fountain Creek

2 miles SE of East Lynn, Vermilion, IL

Built 2023 ADT: 50

TR 56

Good

Over: Archie Creek

1 MI W Elkton, Washington, IL

Built 2023 ADT: 50

TR 544

Good

Over: POND CREEK

2.5 MI NW CORINTH, Williamson, IL

Built 1977 ADT: 200

Wagon Wheel Pk. Lo

Good

Over: Rocky Branch

New Salem State Park, Menard, IL

Built 1992 Load: 3.2 t ADT: 25

PARKVIEW DR

Good

Over: ADDISON CR

0.08 M N NORTH P9, Cook, IL

Built 1965 Load: 4.5 t ADT: 125

TR 245

Good

Over: STREAM

N.CTR-1-T22NR5W, Tazewell, IL

Built 1956 Load: 7.5 t ADT: 50

TR-498A (Sullens R

Good

Over: Conner Branch

3 Mi E of Iuka, Marion, IL

Built 1900 Load: 8.4 t ADT: 25

TR-309

Good

Over: TURKEY CREEK

1 MI NE CENTRAL CITY, Marion, IL

Built 1984 Load: 8.7 t ADT: 425

TR 272

Good

Over: BR LITTLE BESSIE CK

N HANAFORD, Franklin, IL

Built 1977 Load: 11.7 t ADT: 75

RIVER RD.

Good

Over: BR PECATONICA RIVER

6.0 MI E FREEPORT, Stephenson, IL

Built 1953 Load: 12.3 t ADT: 275

TR-224 N AFOLKEY R

Good

Over: BR OF CEDAR CREEK

2.0 MI W OF DAKOTA, Stephenson, IL

Built 1966 Load: 12.3 t ADT: 525

FAS 702(CH 4)

Good

Over: CROOKED CREEK

0.5 MI W HAZEL DELL, Cumberland, IL

Built 1956 Load: 13.0 t ADT: 475

RISDON SCHOOL TR 1

Good

Over: BRANCH DOZA CREEK

6 MI WEST OF MARISSA, St. Clair, IL

Built 1967 Load: 13.0 t ADT: 225

GERBICK RD

Good

Over: BR OF YELLOW CREEK

4.5 MI NW OF LENA, Stephenson, IL

Built 1962 Load: 13.0 t ADT: 50

TR 142

Good

Over: SPOON CREEK

1 MI W WOODSON, Morgan, IL

Built 1959 Load: 13.6 t ADT: 75

E KELLY RD

Good

Over: CN RR

1 MI W WINN CO LN, Stephenson, IL

Built 1901 Load: 13.6 t ADT: 50

TR 200

Good

Over: LITTLE BEAVER CR

1.03 MI SE ST.ANNE, Kankakee, IL

Built 1958 Load: 13.9 t ADT: 150

TR 171

Good

Over: TRIB TO VERMILION R

2355 E, 1300 N, Livingston, IL

Built 1950 Load: 13.9 t ADT: 25

FAS-790

Good

Over: WILLS CREEK

4 MI W ALMA, Marion, IL

Built 1938 Load: 13.9 t ADT: 175

EAST ST JAMES RD

Good

Over: CEDAR CREEK

5.0 MI E ORANGEVILLE, Stephenson, IL

Built 1954 Load: 13.9 t ADT: 75

TR 134

Good

Over: STREAM

1 MI NE COBDEN, Union, IL

Built 1900 Load: 13.9 t ADT: 100

FAU 8179

Good

Over: CREEK

.25 S JACKSONVILLE, Morgan, IL

Built 1960 Load: 14.6 t ADT: 2,550

S WAGNER ROAD

Good

Over: BRANCH OTTER CREEK

3 MI SW MILLEDGEVILL, Carroll, IL

Built 1940 Load: 14.9 t ADT: 25

TR119 (PRAIR CTR R

Good

Over: DEER CREEK

6 MI W OF STERLING, Whiteside, IL

Built 1975 Load: 14.9 t ADT: 25

BALLOU RD

Good

Over: FORKED CREEK

0.4 MI E IL-102, Will, IL

Built 1943 Load: 14.9 t ADT: 350

CH 6(FAS 513)

Good

Over: BROUILLETTS CREEK

2 MI N OF METCALF, Edgar, IL

Built 1957 Load: 15.2 t ADT: 150

FAS 901(CH 9)

Good

Over: STREAM

1.5 MI S OF ILL 13, Saline, IL

Built 1955 Load: 15.2 t ADT: 1,900

NORTH 2ND ST/FAU92

Good

Over: RICHLAND CREEK

BELLEVILLE, St. Clair, IL

Built 1956 Load: 15.2 t ADT: 750

TR 231A

Good

Over: UNNAMED CREEK

.5 MI SE BALCON, Union, IL

Built 1975 Load: 15.2 t ADT: 25

TR 2

Good

Over: TRIB E BR PANTHER CR

1170N, 0000E, Livingston, IL

Built 1964 Load: 15.6 t ADT: 10

TR 146(SAWYER RD)

Good

Over: STREAM

3.2 MI SSE MAROA, Macon, IL

Built 1909 Load: 15.6 t ADT: 125

COUNTY LINE RD

Good

Over: GERYUNE CREEK

0.8 N OF DUNHAM ROAD, McHenry, IL

Built 1959 Load: 15.9 t ADT: 1,000

ILL 96

Good

Over: INFIDEL HOLLOW CREEK

2 M S OF BELLEVIEW, Calhoun, IL

Built 1941 Load: 16.2 t ADT: 550

FAS 1900

Good

Over: WOLF CREEK

4 MI NW PULLEYS MILL, Williamson, IL

Built 1942 Load: 16.2 t ADT: 1,000

TWP LINE/WESCLIN R

Good

Over: BRANCH OF SUGAR CK

2.5 MI SE TRENTON, Clinton, IL

Built 1941 Load: 16.5 t ADT: 575

Hillview Eldred Ro

Good

Over: CREEK

2.5 N ELDRED, Greene, IL

Built 1939 Load: 16.5 t ADT: 400

FAU 8003 LONG BAY

Good

Over: LAKE SPFLD

SE PART OF SPFLD, Sangamon, IL

Built 1933 Load: 16.5 t ADT: 1,850

MONROE ST/ FAU 927

Good

Over: RICHLAND CREEK

0.32M W ILL 159, St. Clair, IL

Built 1956 Load: 16.8 t ADT: 1,700

LOUISA RD

Good

Over: BR OF WADDAMS CREEK

0.7 MI W ILL RT 73, Stephenson, IL

Built 1966 Load: 16.8 t

FAS 582

Good

Over: RUSSETT BRANCH

1 M W VERSAILLES, Brown, IL

Built 1957 Load: 17.2 t ADT: 250

TR0089

Good

Over: GRANARY CREEK

4 MI SE OF ESSEX, Kankakee, IL

Built 1977 Load: 17.2 t ADT: 25

TR 49

Good

Over: SPOON RIVER

E.CTR-35-T14NR6E, Stark, IL

Built 1966 Load: 17.2 t ADT: 75

GENOA ROAD

Good

Over: HACKEYS CREEK

0.1 MI E RIVER RD, Winnebago, IL

Built 1965 Load: 17.2 t ADT: 1,000

TR 82

Good

Over: DORRIS CREEK

4M S PANAMA, Bond, IL

Built 1901 Load: 17.5 t ADT: 50

FAU 7202/SCOTTSDAL

Good

Over: PHINNEY BRANCH

0.3 S KIRBY AVE, Champaign, IL

Built 1900 Load: 17.5 t ADT: 900

TR 7

Good

Over: STREAM

0.3 MI W OF DIONA, Coles, IL

Built 1986 Load: 17.5 t ADT: 75

CH-16

Good

Over: MAGGOT CREEK

0.7 MI E CARLYLE LK, Fayette, IL

Built 1932 Load: 17.5 t ADT: 100

TR 97

Good

Over: TRIB MD FORK

SE EWING, Franklin, IL

Built 1900 Load: 17.5 t ADT: 25

FAS 917 & CH 5

Good

Over: TOWN CREEK

4.6 M.E. JCT ILL 3, Jackson, IL

Built 1955 Load: 17.5 t ADT: 900

FAS 1301(CH 41)

Good

Over: DRAINAGE DITCH

0.8 MI N ESSEX, Kankakee, IL

Built 1934 Load: 17.5 t ADT: 1,300

Showing 14,151-14,200 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.