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
TR 205
FairOver: HONEY CREEK
S.CTR-16-T8NR4W, Henderson, IL
Built 1985 Load: 32.4 t ADT: 25
TR 166
FairOver: FALL CREEK
NE-4-T11NR4W, Henderson, IL
Built 1992 Load: 32.4 t ADT: 25
TR 212
FairOver: FALL CR
W.CTR-12-T11NR4W, Henderson, IL
Built 1987 Load: 32.4 t ADT: 50
TR 180
FairOver: SMITH CREEK
NW-27-T11NR4W, Henderson, IL
Built 1984 Load: 32.4 t ADT: 50
TR 94
FairOver: ELLISON CREEK
NE-14-T9NR5W, Henderson, IL
Built 1984 Load: 32.4 t ADT: 100
TR 62
FairOver: ELLISON CREEK
S.CTR-5-T9NR5W, Henderson, IL
Built 1984 Load: 32.4 t ADT: 100
TR 68
FairOver: DEEP RUN
SE-9-T9NR5W, Henderson, IL
Built 1982 Load: 32.4 t ADT: 100
TR 74
FairOver: ELLISON CREEK
W.CTR-14-T9NR5W, Henderson, IL
Built 1991 Load: 32.4 t ADT: 25
TR 169
FairOver: BR OF DIXON CREEK
SE.COR-14-T9NR5W, Henderson, IL
Built 1990 Load: 32.4 t ADT: 25
TR 94
FairOver: DIXON CREEK
SE.COR-14-T9NR5W, Henderson, IL
Built 1994 Load: 32.4 t ADT: 100
TR 175
FairOver: BR OF ELLISON CR
NE.COR-26-T9NR5W, Henderson, IL
Built 1984 Load: 32.4 t ADT: 200
TR 92
FairOver: HONEY CREEK
NE.COR-11-T8NR5W, Henderson, IL
Built 1983 Load: 32.4 t ADT: 50
TR 44
FairOver: DUGOUT CREEK
S.CTR-30-T8NR5W, Henderson, IL
Built 1985 Load: 32.4 t ADT: 25
TR 58
FairOver: AT&SF RR (004734P)
N.CTR-5-T8NR5W, Henderson, IL
Built 1999 Load: 32.4 t ADT: 25
US RTE 6
FairOver: CREEK
.42MI NW OF 2900E, Henry, IL
Built 1953 Load: 32.4 t ADT: 1,200
CH 15 FAS 227
FairOver: GREEN RIVER
1.5 MI E COLONA, Henry, IL
Built 1976 Load: 32.4 t ADT: 1,450
TR 420-B
FairOver: MUD CREEK
1.0 MI W ANNAWAN, Henry, IL
Built 1978 Load: 32.4 t ADT: 75
CH 9
FairOver: EDWARDS RIVER
1.5 MI S OF ANDOVER, Henry, IL
Built 1983 Load: 32.4 t ADT: 625
TR 395-A
FairOver: INDIAN CREEK
4.0 MI S KEWANEE, Henry, IL
Built 1979 Load: 32.4 t ADT: 75
TR 345 B
FairOver: S. EDWARDS RIVER
4.5 MI SE ANDOVER, Henry, IL
Built 1980 Load: 32.4 t ADT: 75
TR 400
FairOver: MUD CREEK
4.0 MI SW ANNAWAN, Henry, IL
Built 1981 Load: 32.4 t ADT: 75
TR 276
FairOver: OAT CREEK
2.5 MI NW ATKINSON, Henry, IL
Built 1981 Load: 32.4 t ADT: 25
TR 412
FairOver: GREEN RIVER
3.0 MI SW HOOPPOLE, Henry, IL
Built 1982 Load: 32.4 t ADT: 50
TR 298
FairOver: BR OF EDWARDS RIVER
6.5 MI NE BISHOP HIL, Henry, IL
Built 1980 Load: 32.4 t ADT: 25
TR 238
FairOver: GREEN RIVER
2.0 MI NE GENESEO, Henry, IL
Built 1984 Load: 32.4 t ADT: 25
GRANGE ROAD
FairOver: GREEN RIVER
0.5 MI N OF GENESEO, Henry, IL
Built 1984 Load: 32.4 t ADT: 1,600
TR 121
FairOver: GENESEO CREEK
WEST EDGE GENESEO, Henry, IL
Built 1986 Load: 32.4 t ADT: 175
TR 265
FairOver: BR OF CAMP CREEK
2.5 M S OF ORION, Henry, IL
Built 1986 Load: 32.4 t ADT: 25
TR 362
FairOver: MUD CREEK
5.5 MI W SAUK TRAIL, Henry, IL
Built 1987 Load: 32.4 t ADT: 25
TR 154
FairOver: GREEN RIVER
2280N 1200E, Henry, IL
Built 1996 Load: 32.4 t ADT: 800
TR 385
FairOver: INDIAN CREEK
3 MI. S. OF KEWANEE, Henry, IL
Built 1993 Load: 32.4 t ADT: 75
TR 157
FairOver: BR. GENESEO CREEK
1.25 MI. W. OF IL 82, Henry, IL
Built 1994 Load: 32.4 t ADT: 225
FAI-57 SB
FairOver: IC RR
8.98 MI S ASHKUM INT, Iroquois, IL
Built 1967 Load: 32.4 t ADT: 9,050
FAI-57 NB
FairOver: T. P. & W RR
8.78 MI S ASHKUM INT, Iroquois, IL
Built 1967 Load: 32.4 t ADT: 9,050
FAI-57 SB
FairOver: T.P. & W RR
8.76 MI S ASHKUM INT, Iroquois, IL
Built 1967 Load: 32.4 t ADT: 9,050
US 24
FairOver: DRAINAGE DITCH
2.1 MILES E OF US 45, Iroquois, IL
Built 1954 Load: 32.4 t ADT: 2,900
FAI-57
FairOver: STREAM
1.75 MI N OF FORD CO, Iroquois, IL
Built 1971 Load: 32.4 t ADT: 17,600
US 45
FairOver: CREEK
1.5 M N LODA, Iroquois, IL
Built 1993 Load: 32.4 t ADT: 2,100
FAI-57
FairOver: LOUIS CREEK
0.89 M.S BUCKLEY INT, Iroquois, IL
Built 2002 Load: 32.4 t ADT: 8,800
TR 269
FairOver: BR OF SPRING CK
2MI S THAWVILLE, Iroquois, IL
Built 1977 Load: 32.4 t ADT: 25
TR 307
FairOver: SPRING CREEK
1.2MI E US45 BUCKLEY, Iroquois, IL
Built 1980 Load: 32.4 t ADT: 50
TR 269A
FairOver: SPRING CREEK
1.5MI S 1MI E DELREY, Iroquois, IL
Built 1983 Load: 32.4 t ADT: 50
TR 36
FairOver: SPRING CREEK
0.75S 0.5E BUCKLEY, Iroquois, IL
Built 1985 Load: 32.4 t ADT: 50
TR 292
FairOver: DRAINAGE DITCH
3.75 MI NE BUCKLEY, Iroquois, IL
Built 1982 Load: 32.4 t ADT: 25
TR 2B
FairOver: STREAM
W CO LINE.75S FAS334, Iroquois, IL
Built 1987 Load: 32.4 t ADT: 50
TR 319A
FairOver: MUD CREEK
0.25 MI E KELLART LK, Iroquois, IL
Built 1983 Load: 32.4 t ADT: 75
TR 200
FairOver: SHAVETAIL CREEK
T25N R13W 2ND PM, Iroquois, IL
Built 1991 Load: 32.4 t ADT: 50
TR 114
FairOver: TRIB TO MUD CR
1.5W, 2N CISSNA PK, Iroquois, IL
Built 1993 Load: 32.4 t ADT: 75
TR 57
FairOver: LANGAN CR
0.29 MI E CH 24, Iroquois, IL
Built 1981 Load: 32.4 t ADT: 25
TR 58
FairOver: TRIB OF LANGAN CRK.
.75 MI N. RT. 116, Iroquois, IL
Built 1993 Load: 32.4 t ADT: 25
Showing 8,151-8,200 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.