Total Bridges
27,743
Public highway bridges in Illinois
State profile · Near national median SD
Illinois bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Illinois — drawn straight from the FHWA National Bridge Inventory.
- 27,743
- Public bridges
- 41.2%
- Good condition
- 7.9%
- Poor condition
- 7.9%
- Structurally deficient
Good Condition
41.2%
11,426 bridges rated 7-9
-8.8pp vs 50% benchmark
Poor Condition
7.9%
2,186 bridges rated 0-4
Structurally Deficient
7.9%
2,186 bridges flagged for repair priority
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 — Structurally deficient share 26.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Illinois on the same metric.
44
Rhode Island
7.69% top marginal rate
31
Nebraska
7.73% top marginal rate
17
Illinois
7.88% top marginal rate
25
Massachusetts
7.96% top marginal rate
29
Missouri
8.53% top marginal rate
Bridges Needing Most Attention in Illinois
Six lowest-condition bridges in Illinois, ranked by composite NBI rating. Each is inspected at least every 24 months.
FAS 1599
PoorOver: DRAINAGE CANAL
2.2 MI E MEYER, Adams, IL
Built 1980 Load: 0.6 t ADT: 200
CH 15
PoorOver: E FK MAZONRIVER
0.05 MI W CH 16, Grundy, IL
Built 1977 Load: 1.0 t ADT: 1,400
MOOSE RD - TR 240
Structurally DeficientOver: WILSON CREEK
NE-35-T3NR2E, Fulton, IL
Built 1935 Load: 1.3 t ADT: 10
TR 10-B
Structurally DeficientOver: KING CREEK
W EDGE OF MINERAL, Bureau, IL
Built 1899 Load: 1.6 t ADT: 10
TR-6
Structurally DeficientOver: DRAINAGE DITCH
3.5 MI NE DIETERICH, Effingham, IL
Built 1909 Load: 1.6 t ADT: 25
TR208K(TWIN BRIDGE
Structurally DeficientOver: BIG CREEK
NE EDGE MT ZION, Macon, IL
Built 1967 Load: 1.9 t ADT: 375
All Bridges in Illinois
BN RR (079202U)
UnknownOver: FAS 1422-CH 1
S.CTR-14-T10NR4W, Henderson, IL
Built 1899 ADT: 50
AT&SF RR (004716S)
UnknownOver: TR 161
S.CTR-11-T9NR4W, Henderson, IL
Built 1900 ADT: 25
AT&SF RR (004735W)
UnknownOver: TR 193
CTR-12-T8NR6W, Henderson, IL
Built 1906 ADT: 25
FAI 74 & 280 EB
UnknownOver: US6, BN RR, & TR38
1 MI SW GREEN ROCK, Henry, IL
Built 1961 ADT: 4,550
FAI 74 & 280 WB
UnknownOver: US6, BN RR, & TR38
1 MI SW GREEN ROCK, Henry, IL
Built 1961 ADT: 4,550
FAI 74 & 280 WB
UnknownOver: TR 48
1.5 MI W JCT FAI 80, Henry, IL
Built 1961 ADT: 475
FAI 74 & 280 EB
UnknownOver: TR 48
1.5 MI W JCT FAI 80, Henry, IL
Built 1961 ADT: 475
FAI 74 SB
UnknownOver: OSCO-ORION RD/FS2224
2 MI E OF ORION, Henry, IL
Built 1965 ADT: 900
FAI 74 NB
UnknownOver: OSCO-ORION RD/FS2224
2 MI E OF ORION, Henry, IL
Built 1965 ADT: 900
FAI 74 SB
UnknownOver: OPHIEM RD/FAS240
3 MI S JCT ILL 81, Henry, IL
Built 1966 ADT: 275
FAI 74 NB
UnknownOver: OPHIEM RD/FAS240
3 MI S JCT ILL 81, Henry, IL
Built 1966 ADT: 275
FAI 74 SB
UnknownOver: TR 379B
1 MI N JCT ILL 17, Henry, IL
Built 1967 ADT: 350
FAI 74 NB
UnknownOver: TR 379B
1 MI N JCT ILL 17, Henry, IL
Built 1967 ADT: 350
FAI 80 SB
UnknownOver: CLEVELAND RD/FAP595
2.1 M N JCT US 6, Henry, IL
Built 1965 ADT: 7,300
FAI 80 NB
UnknownOver: CLEVELAND RD/FAU5864
2.1 MI N JCT US 6, Henry, IL
Built 1965 ADT: 8,400
FAI 80 SB
UnknownOver: FAI 74
3 MI SE COLONA, Henry, IL
Built 1961 ADT: 15,000
FAI 80 NB
UnknownOver: FAI 74
3 MI SE COLONA, Henry, IL
Built 1961 ADT: 14,800
FAI 80 EB
UnknownOver: OSCO ROAD/FAS 227
0.5 MI E JCT I74, Henry, IL
Built 1961 ADT: 525
FAI 80 WB
UnknownOver: OSCO ROAD/FAS 227
0.5 MI E JCT I74, Henry, IL
Built 1961 ADT: 525
FAI 80 EB
UnknownOver: TR 276
2.8 MI W ATKINSON RD, Henry, IL
Built 1961 ADT: 200
FAI 80 WB
UnknownOver: TR 276
2.8 MI W ATKINSON RD, Henry, IL
Built 1961 ADT: 200
FAI 80 EB
UnknownOver: SBI7B/US6 & IAIS RR
3.5 MI W JCT ILL 78, Henry, IL
Built 1962 ADT: 1,500
FAI 80 WB
UnknownOver: SBI7B/US6 & IAIS RR
3.5 MI W JCT ILL 78, Henry, IL
Built 1962 ADT: 1,500
FAP 22 / IL 78
UnknownOver: FAI 80
N EDGE ANNAWAN, Henry, IL
Built 1961 ADT: 17,900
FAU 5789 / US 6
UnknownOver: FAI 80
1.2 MI E JCT ILL 84, Henry, IL
Built 1963 ADT: 21,500
TR149
UnknownOver: FAI 74
1.0 MI S JCT I80, Henry, IL
Built 1965 ADT: 14,800
TR 169
UnknownOver: FAI 74
3.0 MI S JCT FAI 80, Henry, IL
Built 1965 ADT: 14,800
TR 251
UnknownOver: FAI 74
2 MI. N. OF IL81, Henry, IL
Built 1966 ADT: 14,800
TR 122
UnknownOver: FAI 80
4.5 MI W OF GENESEO, Henry, IL
Built 1961 ADT: 20,600
CAMBRIDGE RD/FAS23
UnknownOver: FAI 80
4.0 MI W JCT ILL 82, Henry, IL
Built 1961 ADT: 20,600
TR 172
UnknownOver: FAI 80
1.0 MI W OF GENESEO, Henry, IL
Built 1961 ADT: 20,600
TR 196-D
UnknownOver: FAI 80
.34 MI E GENESEO, Henry, IL
Built 1961 ADT: 17,300
TR 216
UnknownOver: FAI 80
2.5 MI SE OF GENESEO, Henry, IL
Built 1961 ADT: 17,300
TR 330
UnknownOver: FAI 80
1 MI W ATKINSON RD, Henry, IL
Built 1961 ADT: 17,300
ATKINSON RD / CH 5
UnknownOver: FAI 80
S EDGE ATKINSON, Henry, IL
Built 1961 ADT: 17,600
TR 376
UnknownOver: FAI 80
1.8 MI E ATKINSON RD, Henry, IL
Built 1962 ADT: 17,600
TR 400 A
UnknownOver: FAI 80
2.8 MI W JCT ILL 78, Henry, IL
Built 1962 ADT: 17,600
TR 468
UnknownOver: FAI 80
1.5 MI E JCT ILL 78, Henry, IL
Built 1961 ADT: 17,900
US 6 (FAU 5789)
UnknownOver: BN RR & TR 38
3 MI. E ROCK ISL CO, Henry, IL
Built 1991 ADT: 50
IL 81
UnknownOver: I-74
1.8 MI. W. ANDOVER, Henry, IL
Built 1999 ADT: 14,300
FAI 80 EB
UnknownOver: FAP 638/IL 82
S EDGE GENESEO, Henry, IL
Built 2003 ADT: 2,200
FAI 80 WB
UnknownOver: FAP 638/IL 82
S EDGE GENESEO, Henry, IL
Built 2003 ADT: 8,550
POPPY GRN RD/FAU58
UnknownOver: FAI RT 80
.96 MI E JCT ILL 84, Henry, IL
Built 2007 ADT: 21,600
BNSF RR
UnknownOver: US 34
N EDGE KEWANEE, Henry, IL
Built 1920 ADT: 2,000
IAIS RR
UnknownOver: ILL 82
.5 MI N JCT US 6, Henry, IL
Built 1941 ADT: 4,100
PEDESTRIAN WALKWAY
UnknownOver: IL 78 (MAIN STREET)
0.3 MI S. OF IL 81, Henry, IL
Built 1989 ADT: 6,300
FAI-57 NB
UnknownOver: WEST SECOND ST
8.63 MI S ASHKUM INT, Iroquois, IL
Built 1967 ADT: 450
FAI-57 SB
UnknownOver: WEST SECOND ST
8.6 MI S ASHKUM INT, Iroquois, IL
Built 1967 ADT: 450
FAI-57 NB
UnknownOver: FAS 317 & ICG RR
0.78 MI S CLIFTON IN, Iroquois, IL
Built 1966 ADT: 1,750
FAI-57 SB
UnknownOver: FAS 317 & ICG RR
0.78 M S CLIFTON INT, Iroquois, IL
Built 1966 ADT: 1,750
Showing 1,951-2,000 of 27,743 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |