Total Bridges
26,928
Public highway bridges in Illinois
State profile · Near median Poor share
Illinois bridge safety
According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Illinois.
- 26,928
- Public bridges
- 45.6%
- Good condition
- 9.3%
- Poor condition
Illinois holds 26,928 public highway bridges (#2 of 52 by inventory) with a 9.35% Poor share (#12 of 52 by Poor share).
That is 9.3% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 41 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.
Inventory: FHWA NBI 2024 · last ETL August 2026
Good Condition
45.6%
12,289 bridges rated 7-9
-4.4pp vs 50% benchmark
Poor Condition
9.3%
2,517 bridges whose lowest applicable component is rated 0-4
1.8pp vs national avg 7.5%
Illinois vs national bridge condition
Illinois - Good condition share 45.6%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Illinois - Poor-condition share 31.2%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.
Illinois in the national condition pattern
Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.
Illinois vs all states by public bridge inventory
Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges
26,928 2nd of 54 higher than 52 of 54 states
States and territories, banded by public bridge inventory size
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · 2024
Read the rank neighborhood for Illinois
The highlighted point is Illinois: 26,928 bridges and 9.35% in Poor condition, rank #41 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Illinois on that same Poor-share ordering:
- Massachusetts: 5,295 bridges · 8.88% Poor
- Missouri: 24,618 bridges · 8.95% Poor
- Illinois: 26,928 bridges · 9.35% Poor
- New York: 17,642 bridges · 9.43% Poor
- North Dakota: 4,255 bridges · 10.98% Poor
The full national sortable table lives on the rankings page.
Material families in Illinois
Exclusive FHWA material families across all 26,928 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.
Who maintains Illinois’s inventory
State agency holds 31.3% of the 26,928 public highway bridges filed under Illinois in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.
When Illinois’s bridges were built
Pre-1950 construction accounts for 11.2% of the 26,928 bridges with a recorded original year in Illinois. Era bands are orthogonal to the Poor-share ranking above.
Condition Distribution
Counties (102)
Adams 319 Alexander 93 Bond 162 Boone 109 Brown 71 Bureau 375 Calhoun 81 Carroll 179 Cass 77 Champaign 727 Christian 321 Clark 230 Clay 166 Clinton 190 Coles 304 Cook 1721 Crawford 197 Cumberland 169 De Witt 192 DeKalb 261 Douglas 232 DuPage 344 Edgar 278 Edwards 79 Effingham 253 Fayette 357 Ford 302 Franklin 310 Fulton 210 Gallatin 82 Greene 162 Grundy 269 Hamilton 165 Hancock 292 Hardin 61 Henderson 142 Henry 328 Iroquois 570 Jackson 228 Jasper 181 Jefferson 260 Jersey 113 Jo Daviess 193 Johnson 118 Kane 336 Kankakee 344 Kendall 132 Knox 304 LaSalle 528 Lake 251 Lawrence 185 Lee 371 Livingston 579 Logan 292 Macon 346 Macoupin 242 Madison 523 Marion 296 Marshall 155 Mason 86 Massac 132 McDonough 209 McHenry 227 McLean 624 Menard 89 Mercer 163 Monroe 132 Montgomery 261 Morgan 234 Moultrie 172 Ogle 377 Peoria 352 Perry 136 Piatt 246 Pike 330 Pope 88 Pulaski 108 Putnam 50 Randolph 149 Richland 151 Rock Island 272 Saline 185 Sangamon 466 Schuyler 114 Scott 99 Shelby 335 St. Clair 486 Stark 93 Stephenson 342 Tazewell 358 Union 192 Vermilion 494 Wabash 89 Warren 199 Washington 233 Wayne 266 White 214 Whiteside 278 Will 649 Williamson 201 Winnebago 467 Woodford 223
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.
MA
Massachusetts
8.88% top marginal rate
MO
Missouri
8.95% top marginal rate
IL
Illinois
9.35% top marginal rate
NY
New York
9.43% top marginal rate
ND
North Dakota
10.98% top marginal rate
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.
TR 416
PoorOver: MCKEE CRK
4.7 MI W KELLERVILLE, Adams, IL
Built 1905 Load: 0.0 t ADT: 10
CH 11
PoorOver: SOUTH FORKBEAR CREEK
3.96 MI N CAMP POINT, Adams, IL
Built 1975 Load: 0.0 t ADT: 725
FAS 945
PoorOver: CLEAR CREEK DITCH
2.5 MI E OF MCCLURE, Alexander, IL
Built 1959 Load: 0.0 t ADT: 1,100
CH 4
PoorOver: SPRING BRANCH
4.5M N KEYSPORT, Bond, IL
Built 1973 Load: 0.0 t ADT: 50
TR-164
PoorOver: Little Beaver Creek
2 MI S DUDLEYVILLE, Bond, IL
Built 1965 Load: 0.0 t ADT: 50
TR 85
PoorOver: MASTERS CREEK
3 MI SE OF OHIO, Bureau, IL
Built 1965 Load: 0.0 t ADT: 25
All Bridges in Illinois
TR 0202
FairOver: SOUTH BR. MILL CREEK
1.75 MILES S BURTON, Adams, IL
Built 1978 Load: 32.4 t ADT: 150
TR 531
FairOver: PIGEON CREEK
1.8 MI NE PAYSON, Adams, IL
Built 1980 Load: 32.4 t ADT: 75
TR 0518
FairOver: FISHHOOK CREEK
2.5 MI S SILOAM SPRI, Adams, IL
Built 1978 Load: 32.4 t ADT: 75
TR 233
FairOver: CURL CREEK
1.6 MI SE CAMP POINT, Adams, IL
Built 1979 Load: 32.4 t ADT: 50
TR 385
FairOver: BURTON CREEK
1.5 MI N BURTON, Adams, IL
Built 1979 Load: 32.4 t ADT: 300
TR 466
FairOver: MISSOURI CREEK
1.8 MI NW CLAYTON, Adams, IL
Built 1980 Load: 32.4 t ADT: 125
TR 107
FairOver: JENKINS CREEK
2.4 MI N URSA, Adams, IL
Built 1982 Load: 32.4 t ADT: 100
TR 297
FairOver: WALNUT FORK
3 MI SE CLAYTON, Adams, IL
Built 1981 Load: 32.4 t ADT: 75
TR 255
FairOver: DRAINAGE CANAL
3.1 MI NNW QUINCY, Adams, IL
Built 1980 Load: 32.4 t ADT: 100
TR 229
FairOver: BRANCH OF ROCK CREEK
3.5 MI S MENDON, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 182
FairOver: MILL CREEK
6 MI NE QUINCY, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 416
FairOver: BR OF MCKEE CREEK
4 MI NE LIBERTY, Adams, IL
Built 1981 Load: 32.4 t ADT: 25
TR 39
FairOver: CROOKED CREEK
4.5 MI W GOLDEN, Adams, IL
Built 1981 Load: 32.4 t ADT: 50
TR 423
FairOver: MILL CREEK
2.25 MI S E QUINCY, Adams, IL
Built 1981 Load: 32.4 t ADT: 175
TR 114A
FairOver: MILL CREEK
3.0 MI S E QUINCY, Adams, IL
Built 1982 Load: 32.4 t ADT: 200
TR 0563
FairOver: FALL CREEK
1.4 MI W PAYSON, Adams, IL
Built 1984 Load: 32.4 t ADT: 50
TR 350
FairOver: BR OF MCCRAMEY CREEK
3.5 MI E PLAINVILLE, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 380
FairOver: MCKEE CREEK
2.2 MI E COLUMBUS, Adams, IL
Built 1981 Load: 32.4 t ADT: 100
TR 210
FairOver: S.FK MILL CREEK
1.4 MI S BURTON, Adams, IL
Built 1982 Load: 32.4 t ADT: 100
TR 152
FairOver: LITTLE MILL CREEK
2.75 MI E QUINCY, Adams, IL
Built 1982 Load: 32.4 t ADT: 250
TR 165
FairOver: S FK BEAR CREEK
2.1 MI N COATSBURG, Adams, IL
Built 1982 Load: 32.4 t ADT: 100
TR 21
FairOver: OAK CREEK
1.0 MI. E. OF LIMA, Adams, IL
Built 1983 Load: 32.4 t ADT: 50
TR 437
FairOver: MILL CREEK
3.1 MI SE QUINCY, Adams, IL
Built 1984 Load: 32.4 t ADT: 100
TR 297
FairOver: WALNUT FORK CREEK
2.3 MI S CLAYTON, Adams, IL
Built 1984 Load: 32.4 t ADT: 100
TR 297
FairOver: WALNUT FORK CREEK
2.3 MI S CLAYTON, Adams, IL
Built 1984 Load: 32.4 t ADT: 100
TR 301
FairOver: FRAZIER CREEK
1.5 MI N QUINCY, Adams, IL
Built 1984 Load: 32.4 t ADT: 300
TR 411
FairOver: WILLOW BR CREEK
3.0 MI NE LIBERTY, Adams, IL
Built 1986 Load: 32.4 t ADT: 75
CH 5
FairOver: MILL CREEK
4 MI EAST OF QCY, Adams, IL
Built 1905 Load: 32.4 t ADT: 950
CH 12
FairOver: MCKEE CREEK
1.5 MI N COLUMBUS, Adams, IL
Built 1978 Load: 32.4 t ADT: 725
CH 5
FairOver: BURTON CREEK
IN BURTON, Adams, IL
Built 1978 Load: 32.4 t ADT: 650
CH 12
FairOver: BEAR CREEK
3.5 MI N COATSBURG, Adams, IL
Built 1981 Load: 32.4 t ADT: 350
FAS 432
FairOver: FISH HOOK CREEK
2.5 MI NE KINGSTON, Adams, IL
Built 1981 Load: 32.4 t ADT: 125
CH 11
FairOver: FIGLEY BR
3.5 MI S. CAMP POINT, Adams, IL
Built 1982 Load: 32.4 t ADT: 750
CH 1
FairOver: HIGGINS CREEK
1.0 MI. SE OF LIMA, Adams, IL
Built 1983 Load: 32.4 t ADT: 200
CH 14 - FAS 432
FairOver: S FK CEDAR / CREEK
4ME GOLDEN, Adams, IL
Built 1985 Load: 32.4 t ADT: 275
FAS 583/CH 18
FairOver: CEDAR CREEK
1.3MI. E LA PRAIRIE, Adams, IL
Built 1987 Load: 32.4 t ADT: 500
CH 10
FairOver: MC CRANEY CREEK
3.4MI E PLAINVILLE, Adams, IL
Built 1990 Load: 32.4 t ADT: 200
CH 14
FairOver: FISH HOOK CREEK
1.5 MI SW SILOAM SPR, Adams, IL
Built 1992 Load: 32.4 t ADT: 150
CH 1
FairOver: BEAR CREEK
3.6 MI W LORAINE, Adams, IL
Built 2000 Load: 32.4 t ADT: 100
CH-6
FairOver: DRAINAGE DITCH
3.2 MI W URSA, Adams, IL
Built 1994 Load: 32.4 t ADT: 100
CH 6
FairOver: DRAINAGE DITCH
2.5 MI W URSA, Adams, IL
Built 1994 Load: 32.4 t ADT: 100
FAS 592/CH22
FairOver: MCCRANEY CREEK
7 MI E. PAYSON, Adams, IL
Built 1995 Load: 32.4 t ADT: 250
CH 10
FairOver: BEEBE CREEK
3.2 MI W BEVERLY, Adams, IL
Built 1995 Load: 32.4 t ADT: 150
TR 375
FairOver: MILL CREEK
3.3 MI E QUINCY, Adams, IL
Built 1985 Load: 32.4 t ADT: 500
TR 76
FairOver: MILL CRK
2.5 MI SO QUINCY, Adams, IL
Built 1986 Load: 32.4 t ADT: 225
TR 205
FairOver: SAND BRANCH
3.4 SO MENDON, Adams, IL
Built 1986 Load: 32.4 t ADT: 25
TR 443
FairOver: COAL CREEK
4.7 MI E LIBERTY, Adams, IL
Built 1985 Load: 32.4 t ADT: 50
TR 214
FairOver: MILL CREEK
3.6 MI NE QUINCY, Adams, IL
Built 1986 Load: 32.4 t ADT: 50
TR 450
FairOver: GRINDSTONE CREEK
1.0 MI NE KINGSTON, Adams, IL
Built 1986 Load: 32.4 t ADT: 50
TR 242
FairOver: TOURMEAL CREEK
1.25 MI E BURTON, Adams, IL
Built 1986 Load: 32.4 t ADT: 100
Showing 3,551-3,600 of 26,928 bridges
Related
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.
What to do with this
Use Illinois's inventory picture to drill to a county or a specific span.
- Browse counties in Illinois and open the highest-Poor shares first. County list
- See where this state sits among peers on Poor-condition share. State rankings
- Compare this state with another jurisdiction on the same measures. State compare
NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Illinois Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.