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 (TH-C55)

Good

Over: CREEK

T13N-R9E-4PM SEC 10, Marshall, IL

Built 1970 Load: 24.3 t ADT: 100

TR 140A (TH-S 55)

Good

Over: JUDD CREEK

T30N-R1E-3PM SEC 33, Marshall, IL

Built 1974 Load: 24.3 t ADT: 150

TR 142 (TH-S 57)

Good

Over: JUDD CREEK

T30N-R1E-3PM SEC 34, Marshall, IL

Built 1974 Load: 24.3 t ADT: 75

TR 149

Good

Over: STREAM W OF POPE CO

1 MI W COUNTY LINE, Massac, IL

Built 1900 Load: 24.3 t ADT: 50

FAS 417 - CH 11

Good

Over: N BRANCH CROOKED CR

W.CTR-4-T7NR4W, McDonough, IL

Built 1937 Load: 24.3 t ADT: 325

TR 221

Good

Over: TRIB CAMP CR

E.CTR-9-T5NR1W, McDonough, IL

Built 1955 Load: 24.3 t ADT: 50

SO UNION RD

Good

Over: STREAM

0.3 N ADAMSON RD, McHenry, IL

Built 1964 Load: 24.3 t ADT: 200

TR 12

Good

Over: LONG TREE CREEK

2.5 MI SW FOOSLAND, McLean, IL

Built 1973 Load: 24.3 t ADT: 100

TR 0004

Good

Over: STREAM

2.5 MILE W STANFORD, McLean, IL

Built 1977 Load: 24.3 t ADT: 25

FAS 479 CH 59

Good

Over: BR MID FORK SUGAR CR

2.5 MI S STANFORD, McLean, IL

Built 1952 Load: 24.3 t ADT: 325

TR 570

Good

Over: HENLINE DITCH

5.0 MI WSW CROPSEY, McLean, IL

Built 1960 Load: 24.3 t ADT: 25

TR 438

Good

Over: N FORK SALT CREEK

1.0 MI NNE LEROY, McLean, IL

Built 1963 Load: 24.3 t ADT: 25

PARK ACCESS ROAD

Good

Over: DAWSON LAKE

2.5 MI S ELLSWORTH, McLean, IL

Built 1965 Load: 24.3 t ADT: 325

TR 129

Good

Over: CREEK

1.5 M N TALLULA, Menard, IL

Built 1950 Load: 24.3 t ADT: 100

FAS 1216-CH 3

Good

Over: MAIDS RUN

NE-7-T13NR2W, Mercer, IL

Built 1968 Load: 24.3 t ADT: 10

TR 244

Good

Over: N. POPE CREEK

SW-19-T14NR1W, Mercer, IL

Built 1972 Load: 24.3 t ADT: 50

LEVEE RD./ TR 28

Good

Over: FISH LAKE DR DITCH

RD DISTRICT 5, Monroe, IL

Built 1957 Load: 24.3 t ADT: 75

TR 0432

Good

Over: STREAM

0.3 M S OHLMAN, Montgomery, IL

Built 1971 Load: 24.3 t ADT: 25

CH 0024

Good

Over: SHOP CREEK

4 NW LITCHFIELD, Montgomery, IL

Built 1962 Load: 24.3 t ADT: 650

TR 381

Good

Over: TRIB APPLE CREEK

2.5 MI W ROHRER, Morgan, IL

Built 1961 Load: 24.3 t ADT: 25

TR 118 D

Good

Over: COON CREEK

S EDGE ALLENVILLE, Moultrie, IL

Built 1965 Load: 24.3 t ADT: 175

LINDENWOOD RD

Good

Over: STILLMAN CREEK

3.5 N.E. PAYNES POIN, Ogle, IL

Built 1958 Load: 24.3 t ADT: 100

OREGON TRAIL RD.

Good

Over: GALE CREEK

2.5 W. OREGON, Ogle, IL

Built 1957 Load: 24.3 t ADT: 350

PRAIRIE RD.

Good

Over: BR. KYTE CREEK

3.5 S.W. CHANA, Ogle, IL

Built 1958 Load: 24.3 t ADT: 125

MARRILL RD.

Good

Over: BR. STILLMAN CR.

4.5 S.E. BYRON, Ogle, IL

Built 1950 Load: 24.3 t ADT: 50

CASTLE RD.

Good

Over: BR. GALE CREEK

3.0 S W OREGON, Ogle, IL

Built 1953 Load: 24.3 t ADT: 50

SKARE RD.

Good

Over: BR. KYTE CREEK

1.5 W. FLAGG CENTER, Ogle, IL

Built 1963 Load: 24.3 t ADT: 1,050

MARYLAND ROAD

Good

Over: PINE CREEK

4.5 MI SE FORRESTON, Ogle, IL

Built 1973 Load: 24.3 t ADT: 25

CO HWY 11

Good

Over: BOARD TREE BRANCH

S OF WASHINGTON CO, Perry, IL

Built 1900 Load: 24.3 t ADT: 125

TR 129

Good

Over: KANKAKEE DRAIN DITCH

1.0 MI N IVESDALE, Piatt, IL

Built 1974 Load: 24.3 t ADT: 25

TR 14

Good

Over: STREAM

1 MI NE LA PLACE, Piatt, IL

Built 1968 Load: 24.3 t ADT: 75

TR 80

Good

Over: HADLEY CR. TRIBUTARY

0.70 MI W OF BARRY, Pike, IL

Built 1975 Load: 24.3 t ADT: 350

TR 80

Good

Over: HODGES CREEK

1 MI SW OLMSTED, Pulaski, IL

Built 1977 Load: 24.3 t ADT: 50

FAS-1717

Good

Over: EAST FORK LAKE

1 MI N OLNEY, Richland, IL

Built 1971 Load: 24.3 t ADT: 850

COUNTY HWY 1

Good

Over: CHICAGO + N W R R

2.5 MI W ANDREW, Sangamon, IL

Built 1945 Load: 24.3 t ADT: 2,400

TR 233

Good

Over: S FORK SANGAMON RV

2.0 MI N ROCHESTER, Sangamon, IL

Built 1967 Load: 24.3 t ADT: 400

TR 341

Good

Over: SOUTH FORK DRAINAGE

2 SE OF NEW CITY, Sangamon, IL

Built 1968 Load: 24.3 t ADT: 75

TR 22

Good

Over: PRAIRIE CREEK

3.0 NW OF BERLIN, Sangamon, IL

Built 1966 Load: 24.3 t ADT: 50

FAP 75 IL 29

Good

Over: DITCH

7.04M N CHRISTIAN CO, Sangamon, IL

Built 2003 Load: 24.3 t ADT: 8,700

FAS 624A (CH 40)

Good

Over: Sangchris Spillway

.03 W Christian CL, Sangamon, IL

Built 1965 Load: 24.3 t ADT: 500

TR 318(FAS 1650)

Good

Over: WOLF CREEK

4.1 MI SE FINDLEY, Shelby, IL

Built 1968 Load: 24.3 t ADT: 325

TR 124

Good

Over: FLAT BRANCH

7.0 MI E ASSUMPTION, Shelby, IL

Built 1951 Load: 24.3 t ADT: 75

TR 86 B

Good

Over: STREAM

5 MI NW YANTISVILE, Shelby, IL

Built 1909 Load: 24.3 t ADT: 50

TOWNSEND RD/ TR 5C

Good

Over: LITTLE SILVER CREEK

1 MI E ILL 4, St. Clair, IL

Built 1941 Load: 24.3 t ADT: 50

PROBST RD/ TR 126

Good

Over: BR. RICHLAND CREEK

0.25 MI N ILL 156, St. Clair, IL

Built 1901 Load: 24.3 t ADT: 25

NORTH THIRD STREET

Good

Over: RICHLAND CREEK

4 BLOCKS NW SQUARE, St. Clair, IL

Built 1948 Load: 24.3 t ADT: 875

W MAIN ST/ FAU 918

Good

Over: RICHLAND CREEK

0.50 W ILL 159, St. Clair, IL

Built 1948 Load: 24.3 t ADT: 6,100

TR 128

Good

Over: CAMP RUN

SW-3-T12NR7E, Stark, IL

Built 1969 Load: 24.3 t ADT: 50

TR 124

Good

Over: CAMP RUN

E.CTR-8-T12NR7E, Stark, IL

Built 1974 Load: 24.3 t ADT: 100

WIRE RD

Good

Over: BR OF PECATONICA RIV

1.0 MI W ILL RT 73, Stephenson, IL

Built 1963 Load: 24.3 t ADT: 25

Showing 14,551-14,600 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.