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 127

Good

Over: CAMP RUN TRIBUTARY

SW COR-35-T13NR7E, Stark, IL

Built 1980 Load: 32.4 t ADT: 50

TR 127

Good

Over: CAMP RUN

SW-36-T13NR7E, Stark, IL

Built 1985 Load: 32.4 t ADT: 50

TR 62

Good

Over: JACK CREEK

NW-4-T13NR6E, Stark, IL

Built 1994 Load: 32.4 t ADT: 50

TR 132

Good

Over: STREAM

NE COR-3-T12NR7E, Stark, IL

Built 1997 Load: 32.4 t ADT: 25

TR 127

Good

Over: TRIB. CAMP RUN

NE-4-T12NR7E, Stark, IL

Built 1988 Load: 32.4 t ADT: 50

TR 135

Good

Over: CAMP RUN

NW-9-T12NR7E, Stark, IL

Built 1987 Load: 32.4 t ADT: 10

TR 138

Good

Over: STREAM

W. CTR-12-T12NR7E, Stark, IL

Built 1998 Load: 32.4 t ADT: 125

TR 151

Good

Over: CAMP CREEK

SW-15-T12NR7E, Stark, IL

Built 1987 Load: 32.4 t ADT: 35

TR 124

Good

Over: CAMP CREEK

NW-21-T12NR7E, Stark, IL

Built 2001 Load: 32.4 t ADT: 50

TR 138

Good

Over: MUD RUN

E.CTR-26-T12NR7E, Stark, IL

Built 1984 Load: 32.4 t ADT: 125

TR 116

Good

Over: CAMP CREEK

E.CTR-19-T12NR7E, Stark, IL

Built 2000 Load: 32.4 t ADT: 50

TR 132

Good

Over: STREAM

SW-2-T12NR7E, Stark, IL

Built 2008 Load: 32.4 t ADT: 25

TR 12

Good

Over: WALNUT CREEK

SE-6-T12NR5E, Stark, IL

Built 1991 Load: 32.4 t ADT: 50

TR 10

Good

Over: WALNUT CREEK

E CTR-8-T12N R5E, Stark, IL

Built 1986 Load: 32.4 t ADT: 50

TR 10

Good

Over: WALNUT CREEK

CTR-19-T12NR5E, Stark, IL

Built 1983 Load: 32.4 t ADT: 25

TR 165

Good

Over: WALNUT CREEK

W.CTR-30-T12NR5E, Stark, IL

Built 1984 Load: 32.4 t ADT: 25

HOLLYWOOD RD

Good

Over: YELLOW CREEK

1 MI. SE. FREEPORT, Stephenson, IL

Built 1999 Load: 32.4 t ADT: 250

IL 75

Good

Over: DRAINAGE

.08MI N BAIRD ST, Stephenson, IL

Built 2009 Load: 32.4 t ADT: 2,600

IL 73

Good

Over: DRAINAGE

.18 MI N GODDARD RD, Stephenson, IL

Built 2008 Load: 32.4 t ADT: 3,150

FAIRVIEW ROAD

Good

Over: PECATONICA RIV TRIB

1.5 MI W OF IL 26, Stephenson, IL

Built 1987 Load: 32.4 t ADT: 25

IL 75

Good

Over: DRAINAGE DITCH

.69MI'N HILLCREST RD, Stephenson, IL

Built 2007 Load: 32.4 t ADT: 2,800

RIVER ROAD

Good

Over: WINNESHIEK CREEK

4 MI EAST FREEPORT, Stephenson, IL

Built 1951 Load: 32.4 t ADT: 250

MC CONNELL RD

Good

Over: RICHLAND CREEK

3.0 MI SW ORANGEVILL, Stephenson, IL

Built 1952 Load: 32.4 t ADT: 350

PEARL CITY RD.

Good

Over: YELLOW CREEK

EAST EDGE PEARL CITY, Stephenson, IL

Built 1940 Load: 32.4 t ADT: 2,650

KENT ROAD

Good

Over: YELLOW CREEK

3.5 MI SW LENA, Stephenson, IL

Built 1947 Load: 32.4 t ADT: 250

NORTH STUBBE ROAD

Good

Over: BR OF PECATONICA RIV

3.0 MI SE WINSLOW, Stephenson, IL

Built 1965 Load: 32.4 t ADT: 75

EAST LAMM ROAD

Good

Over: SILVER CREEK

3.5 MI SE FREEPORT, Stephenson, IL

Built 1932 Load: 32.4 t ADT: 75

BECKER SCHOOL ROAD

Good

Over: STREAM

4.5 MI SW FREEPORT, Stephenson, IL

Built 1977 Load: 32.4 t ADT: 175

CHRISTIAN HOLLOW R

Good

Over: INDIAN CREEK

2.5 MI W WINSLOW, Stephenson, IL

Built 1977 Load: 32.4 t ADT: 125

E BRICK SCHOOL ROA

Good

Over: ROCK RUN CREEK

4.0 MI SE ROCK CITY, Stephenson, IL

Built 1978 Load: 32.4 t ADT: 50

W BLOCK ROAD

Good

Over: BR OF YELLOW CREEK

.56 MI S PEARL C RD, Stephenson, IL

Built 1978 Load: 32.4 t ADT: 50

W BUSCH ROAD

Good

Over: EAST PLUM RIVER

4.0 M SW PEARL CITY, Stephenson, IL

Built 1979 Load: 32.4 t ADT: 25

WEST LORAN ROAD

Good

Over: SPRING BRANCH

1.1 MI E OF ILL 73, Stephenson, IL

Built 1980 Load: 32.4 t ADT: 125

EAST RIVER ROAD

Good

Over: ROCK RUN CREEK

6.5 MI 5 OF DAVIS, Stephenson, IL

Built 1980 Load: 32.4 t ADT: 25

W LONESOME ROAD

Good

Over: E PLUM RIVER

3.5 MI SW PEARL CITY, Stephenson, IL

Built 1980 Load: 32.4 t ADT: 50

WEST NORA ROAD

Good

Over: INDIAN CREEK

3.5 MI SW OF WINSLOW, Stephenson, IL

Built 1980 Load: 32.4 t ADT: 35

S MILL GROVE ROAD

Good

Over: LOST CREEK

3.0 M SE PEARL CITY, Stephenson, IL

Built 1979 Load: 32.4 t ADT: 100

WEST RADERS ROAD

Good

Over: YELLOW CREEK

1.6 M W OF ILL 73, Stephenson, IL

Built 1979 Load: 32.4 t ADT: 25

FIVE CORNERS ROAD

Good

Over: WADDAMS CREEK

W SIDE LAKE LEAQUANA, Stephenson, IL

Built 1982 Load: 32.4 t ADT: 350

W BLAIR ROAD

Good

Over: INDIAN CREEK

3.5 MI SW OF WINSLOW, Stephenson, IL

Built 1982 Load: 32.4 t ADT: 50

E PLEASANTVIEW ROA

Good

Over: ROCK RUN CREEK

3.0 MI NE ROCK CITY, Stephenson, IL

Built 1981 Load: 32.4 t ADT: 50

E PLEASANT VIEW RO

Good

Over: ROCK RUN CREEK

3.0 MI NW ROCK CITY, Stephenson, IL

Built 1981 Load: 32.4 t ADT: 100

W BABBS GROVE ROAD

Good

Over: YELLOW CREEK BRANCH

3.0 MI E PEARL CITY, Stephenson, IL

Built 1982 Load: 32.4 t ADT: 150

W PRAIRIE ROAD

Good

Over: BR OF YELLOW CREEK

2.5 MI SW FREEPORT, Stephenson, IL

Built 1981 Load: 32.4 t ADT: 50

BROWNS MILL ROAD

Good

Over: STREAM

.98 MI SO ILL RTE 20, Stephenson, IL

Built 1981 Load: 32.4 t ADT: 100

DAVIS ROAD

Good

Over: HAPPY HOLLOW CREEK

6 MI. N. OF DAVIS, Stephenson, IL

Built 1982 Load: 32.4 t ADT: 775

EAST MAIZE ROAD

Good

Over: ROCK RUN CREEK

6 MI S OF DAVIS, Stephenson, IL

Built 1983 Load: 32.4 t ADT: 75

TR-38 (W Mound Rd)

Good

Over: Br of Yellow Creek

0.9 MI W OF ILL 73, Stephenson, IL

Built 1983 Load: 32.4 t ADT: 75

SOUTH REES ROAD

Good

Over: BR OF YELLOW CREEK

1.5 MI NE PEARL CITY, Stephenson, IL

Built 1982 Load: 32.4 t ADT: 50

W DITZLER ROAD

Good

Over: EAST PLUM RIVER

3 MI WEST PEARL CITY, Stephenson, IL

Built 1984 Load: 32.4 t ADT: 50

Showing 20,951-21,000 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.